Dr. Hans-Günter Ludwig, Priv.-Doz.
Landessternwarte
Phone
Office
Nordinstitut, Room 203
Postal Address
Zentrum für Astronomie der Universität Heidelberg
Landessternwarte
Königstuhl 12
69117 Heidelberg
Landessternwarte
Königstuhl 12
69117 Heidelberg
ORCID
Research interests
My research revolves around cool stars, here primarily their surface layers. I develop and apply 3D radiation-hydrodynamical models, sometimes including magnetic fields. Moreover, I model non-equilibrium thermodynamic processes. Applications of my models are related to stellar structure, the chemical composition of stars (particularly when metal-poor), nucleosynthesis processes, Galactic structure, asteroseismology, and stellar pulsations. Every now and then I follow a side-interest in astrobiology.
128.
11/2024
Caffau, E.; Bonifacio, P. et al. (inc. Ludwig, H. -G.)
SDSS J102915.14+172927.9: Revisiting the chemical pattern
A&A 691, A245(2024)
Caffau, E.; Bonifacio, P. et al. (inc. Ludwig, H. -G.)
SDSS J102915.14+172927.9: Revisiting the chemical pattern
A&A 691, A245(2024)
127.
11/2024
Verma, Kuldeep; Maxted, Pierre F. L. et al. (inc. Ludwig, H. -G.)
A regularization technique to precisely infer limb darkening using transit measurements: can we estimate stellar surface magnetic fields?
MNRAS 534, 3893(2024)
Verma, Kuldeep; Maxted, Pierre F. L. et al. (inc. Ludwig, H. -G.)
A regularization technique to precisely infer limb darkening using transit measurements: can we estimate stellar surface magnetic fields?
MNRAS 534, 3893(2024)
126.
7/2024
Kostogryz, Nadiia M.; Shapiro, Alexander I. et al. (inc. Ludwig, Hans-G.)
Magnetic origin of the discrepancy between stellar limb-darkening models and observations
NatAs 8, 929(2024)
Kostogryz, Nadiia M.; Shapiro, Alexander I. et al. (inc. Ludwig, Hans-G.)
Magnetic origin of the discrepancy between stellar limb-darkening models and observations
NatAs 8, 929(2024)
125.
7/2024
Manchon, L.; Deal, M. et al. (inc. Ludwig, H. -G.)
Entropy-calibrated stellar modeling: Testing and improving the use of prescriptions for the entropy of adiabatic convection
A&A 687, A146(2024)
Manchon, L.; Deal, M. et al. (inc. Ludwig, H. -G.)
Entropy-calibrated stellar modeling: Testing and improving the use of prescriptions for the entropy of adiabatic convection
A&A 687, A146(2024)
124.
7/2024
Dravins, Dainis; Ludwig, Hans-Günter
Solar photospheric spectrum microvariability. II. Observed relations to magnetic activity and radial-velocity modulation
A&A 687, A60(2024)
Dravins, Dainis; Ludwig, Hans-Günter
Solar photospheric spectrum microvariability. II. Observed relations to magnetic activity and radial-velocity modulation
A&A 687, A60(2024)
123.
6/2024
Matković, Filip; Brajša, Roman et al. (inc. Ludwig, Hans-G.)
Calculated brightness temperatures of solar structures compared with ALMA and Metsähovi measurements
AN 345, 30149(2024)
Matković, Filip; Brajša, Roman et al. (inc. Ludwig, Hans-G.)
Calculated brightness temperatures of solar structures compared with ALMA and Metsähovi measurements
AN 345, 30149(2024)
122.
4/2024
Lizin, S.; Dupret, M. -A. et al. (inc. Ludwig, H. -G.)
Three-dimensional time-dependent convection model for asteroseismology. I. Mathematical model
A&A 684, A10(2024)
Lizin, S.; Dupret, M. -A. et al. (inc. Ludwig, H. -G.)
Three-dimensional time-dependent convection model for asteroseismology. I. Mathematical model
A&A 684, A10(2024)
121.
3/2024
Caffau, E.; Katz, D. et al. (inc. Ludwig, H. -G.)
The Gaia RVS benchmark stars. II. A sample of stars selected for their Gaia high radial velocity
A&A 683, A72(2024)
Caffau, E.; Katz, D. et al. (inc. Ludwig, H. -G.)
The Gaia RVS benchmark stars. II. A sample of stars selected for their Gaia high radial velocity
A&A 683, A72(2024)
120.
11/2023
Ludwig, H. -G.; Steffen, M. et al.
Effects of magnetic fields on the center-to-limb variation in solar-type stars
A&A 679, A65(2023)
Ludwig, H. -G.; Steffen, M. et al.
Effects of magnetic fields on the center-to-limb variation in solar-type stars
A&A 679, A65(2023)
119.
11/2023
Dravins, Dainis; Ludwig, Hans-Günter
Solar photospheric spectrum microvariability. I. Theoretical searches for proxies of radial-velocity jittering
A&A 679, A3(2023)
Dravins, Dainis; Ludwig, Hans-Günter
Solar photospheric spectrum microvariability. I. Theoretical searches for proxies of radial-velocity jittering
A&A 679, A3(2023)
118.
7/2023
Deshmukh, S. A.; Ludwig, H. -G.
Implications of time-dependent molecular chemistry in metal-poor dwarf stars
A&A 675, A146(2023)
Deshmukh, S. A.; Ludwig, H. -G.
Implications of time-dependent molecular chemistry in metal-poor dwarf stars
A&A 675, A146(2023)
117.
7/2023
Pasquini, L.; Pala, A. F. et al. (inc. Ludwig, H. -G.)
Accurate mass-radius ratios for Hyades white dwarfs
MNRAS 522, 3710(2023)
Pasquini, L.; Pala, A. F. et al. (inc. Ludwig, H. -G.)
Accurate mass-radius ratios for Hyades white dwarfs
MNRAS 522, 3710(2023)
116.
5/2023
Reiners, A.; Yan, F. et al. (inc. Ludwig, H. -G.)
Solar center-to-limb variation in Rossiter-McLaughlin and exoplanet transmission spectroscopy
A&A 673, A71(2023)
Reiners, A.; Yan, F. et al. (inc. Ludwig, H. -G.)
Solar center-to-limb variation in Rossiter-McLaughlin and exoplanet transmission spectroscopy
A&A 673, A71(2023)
115.
2/2023
Matković, F.; Brajša, R. et al. (inc. Ludwig, H. -G.)
Differences in physical properties of coronal bright points and their ALMA counterparts within and outside coronal holes
A&A 670, A146(2023)
Matković, F.; Brajša, R. et al. (inc. Ludwig, H. -G.)
Differences in physical properties of coronal bright points and their ALMA counterparts within and outside coronal holes
A&A 670, A146(2023)
114.
12/2022
Deshmukh, S. A.; Ludwig, H. -G. et al.
The solar photospheric silicon abundance according to CO5BOLD. Investigating line broadening, magnetic fields, and model effects
A&A 668, A48(2022)
Deshmukh, S. A.; Ludwig, H. -G. et al.
The solar photospheric silicon abundance according to CO5BOLD. Investigating line broadening, magnetic fields, and model effects
A&A 668, A48(2022)
113.
10/2022
Gilmore, G.; Randich, S. et al. (inc. Quirrenbach, A.; Ludwig, H. -G.; Grebel, E. K.)
The Gaia-ESO Public Spectroscopic Survey: Motivation, implementation, GIRAFFE data processing, analysis, and final data products
A&A 666, A120(2022)
Gilmore, G.; Randich, S. et al. (inc. Quirrenbach, A.; Ludwig, H. -G.; Grebel, E. K.)
The Gaia-ESO Public Spectroscopic Survey: Motivation, implementation, GIRAFFE data processing, analysis, and final data products
A&A 666, A120(2022)
112.
10/2022
Bonifacio, P.; Monaco, L. et al. (inc. Christlieb, N.; Koch-Hansen, A. J.; Ludwig, H. -G.)
TOPoS . VI. The metal-weak tail of the metallicity distribution functions of the Milky Way and the Gaia-Sausage-Enceladus structure (Corrigendum)
A&A 666, C1(2022)
Bonifacio, P.; Monaco, L. et al. (inc. Christlieb, N.; Koch-Hansen, A. J.; Ludwig, H. -G.)
TOPoS . VI. The metal-weak tail of the metallicity distribution functions of the Milky Way and the Gaia-Sausage-Enceladus structure (Corrigendum)
A&A 666, C1(2022)
111.
5/2022
Magg, Ekaterina; Bergemann, Maria et al. (inc. Ludwig, Hans-Günter)
Observational constraints on the origin of the elements. IV. Standard composition of the Sun
A&A 661, A140(2022)
Magg, Ekaterina; Bergemann, Maria et al. (inc. Ludwig, Hans-Günter)
Observational constraints on the origin of the elements. IV. Standard composition of the Sun
A&A 661, A140(2022)
110.
5/2022
Bertran de Lis, S.; Prieto, Allende et al. (inc. Ludwig, H. -G.)
Interpolation of spectra from 3D model atmospheres
A&A 661, A76(2022)
Bertran de Lis, S.; Prieto, Allende et al. (inc. Ludwig, H. -G.)
Interpolation of spectra from 3D model atmospheres
A&A 661, A76(2022)
109.
7/2021
Bonifacio, P.; Monaco, L. et al. (inc. Christlieb, N.; Koch-Hansen, A. J.; Ludwig, H. -G.)
TOPoS. VI. The metal-weak tail of the metallicity distribution functions of the Milky Way and the Gaia-Sausage-Enceladus structure
A&A 651, A79(2021)
Bonifacio, P.; Monaco, L. et al. (inc. Christlieb, N.; Koch-Hansen, A. J.; Ludwig, H. -G.)
TOPoS. VI. The metal-weak tail of the metallicity distribution functions of the Milky Way and the Gaia-Sausage-Enceladus structure
A&A 651, A79(2021)
108.
7/2021
Caffau, E.; Bonifacio, P. et al. (inc. Ludwig, H. -G.)
The Gaia RVS benchmark stars. I. Chemical inventory of the first sample of evolved stars and its Rb NLTE investigation
A&A 651, A20(2021)
Caffau, E.; Bonifacio, P. et al. (inc. Ludwig, H. -G.)
The Gaia RVS benchmark stars. I. Chemical inventory of the first sample of evolved stars and its Rb NLTE investigation
A&A 651, A20(2021)
107.
7/2021
Brajša, R.; Skokić, I. et al. (inc. Ludwig, H. -G.)
ALMA small-scale features in the quiet Sun and active regions
A&A 651, A6(2021)
Brajša, R.; Skokić, I. et al. (inc. Ludwig, H. -G.)
ALMA small-scale features in the quiet Sun and active regions
A&A 651, A6(2021)
106.
5/2021
Dravins, Dainis; Ludwig, Hans-Günter et al.
Spatially resolved spectroscopy across stellar surfaces. IV. F, G, and K-stars: Synthetic 3D spectra at hyper-high resolution
A&A 649, A16(2021)
Dravins, Dainis; Ludwig, Hans-Günter et al.
Spatially resolved spectroscopy across stellar surfaces. IV. F, G, and K-stars: Synthetic 3D spectra at hyper-high resolution
A&A 649, A16(2021)
105.
5/2021
Dravins, Dainis; Ludwig, Hans-Günter et al.
Spatially resolved spectroscopy across stellar surfaces. V. Observational prospects: toward Earth-like exoplanet detection
A&A 649, A17(2021)
Dravins, Dainis; Ludwig, Hans-Günter et al.
Spatially resolved spectroscopy across stellar surfaces. V. Observational prospects: toward Earth-like exoplanet detection
A&A 649, A17(2021)
104.
5/2021
Cunningham, Tim; Tremblay, Pier-Emmanuel et al. (inc. Ludwig, Hans-Günter)
Horizontal spreading of planetary debris accreted by white dwarfs
MNRAS 503, 1646(2021)
Cunningham, Tim; Tremblay, Pier-Emmanuel et al. (inc. Ludwig, Hans-Günter)
Horizontal spreading of planetary debris accreted by white dwarfs
MNRAS 503, 1646(2021)
103.
3/2021
Cukanovaite, Elena; Tremblay, Pier-Emmanuel et al. (inc. Ludwig, Hans-Günter)
3D spectroscopic analysis of helium-line white dwarfs
MNRAS 501, 5274(2021)
Cukanovaite, Elena; Tremblay, Pier-Emmanuel et al. (inc. Ludwig, Hans-Günter)
3D spectroscopic analysis of helium-line white dwarfs
MNRAS 501, 5274(2021)
102.
2/2021
Lundkvist, Mia S.; Ludwig, Hans-Günter et al.
The signature of granulation in a solar power spectrum as seen with CO5BOLD
MNRAS 501, 2512(2021)
Lundkvist, Mia S.; Ludwig, Hans-Günter et al.
The signature of granulation in a solar power spectrum as seen with CO5BOLD
MNRAS 501, 2512(2021)
101.
12/2020
Philidet, J.; Belkacem, K. et al. (inc. Ludwig, H. -G.)
Velocity-intensity asymmetry reversal of solar radial p-modes
A&A 644, A171(2020)
Philidet, J.; Belkacem, K. et al. (inc. Ludwig, H. -G.)
Velocity-intensity asymmetry reversal of solar radial p-modes
A&A 644, A171(2020)
100.
11/2020
González Hernández, J. I.; Rebolo, R. et al. (inc. Ludwig, H. -G.)
The solar gravitational redshift from HARPS-LFC Moon spectra⋆. A test of the general theory of relativity
A&A 643, A146(2020)
González Hernández, J. I.; Rebolo, R. et al. (inc. Ludwig, H. -G.)
The solar gravitational redshift from HARPS-LFC Moon spectra⋆. A test of the general theory of relativity
A&A 643, A146(2020)
99.
7/2020
Xiang, Mao-Sheng; Rix, Hans-Walter et al. (inc. Ludwig, Hans-Günter)
Chemically Peculiar A and F Stars with Enhanced s-process and Iron-peak Elements: Stellar Radiative Acceleration at Work
ApJ 898, 28(2020)
Xiang, Mao-Sheng; Rix, Hans-Walter et al. (inc. Ludwig, Hans-Günter)
Chemically Peculiar A and F Stars with Enhanced s-process and Iron-peak Elements: Stellar Radiative Acceleration at Work
ApJ 898, 28(2020)
98.
3/2020
Philidet, J.; Belkacem, K. et al. (inc. Ludwig, H. -G.)
Modelling the asymmetries of the Sun's radial p-mode line profiles
A&A 635, A81(2020)
Philidet, J.; Belkacem, K. et al. (inc. Ludwig, H. -G.)
Modelling the asymmetries of the Sun's radial p-mode line profiles
A&A 635, A81(2020)
97.
3/2020
Hanke, Michael; Hansen, Camilla Juul et al. (inc. Grebel, Eva K.; Ludwig, Hans-Günter)
A high-precision abundance analysis of the nuclear benchmark star HD 20
A&A 635, A104(2020)
Hanke, Michael; Hansen, Camilla Juul et al. (inc. Grebel, Eva K.; Ludwig, Hans-Günter)
A high-precision abundance analysis of the nuclear benchmark star HD 20
A&A 635, A104(2020)
96.
11/2019
Cukanovaite, E.; Tremblay, P. -E. et al. (inc. Ludwig, H. -G.)
Calibration of the mixing-length theory for structures of helium-dominated atmosphere white dwarfs
MNRAS 490, 1010(2019)
Cukanovaite, E.; Tremblay, P. -E. et al. (inc. Ludwig, H. -G.)
Calibration of the mixing-length theory for structures of helium-dominated atmosphere white dwarfs
MNRAS 490, 1010(2019)
95.
9/2019
Cunningham, Tim; Tremblay, Pier-Emmanuel et al. (inc. Ludwig, Hans-Günter)
Convective overshoot and macroscopic diffusion in pure-hydrogen-atmosphere white dwarfs
MNRAS 488, 2503(2019)
Cunningham, Tim; Tremblay, Pier-Emmanuel et al. (inc. Ludwig, Hans-Günter)
Convective overshoot and macroscopic diffusion in pure-hydrogen-atmosphere white dwarfs
MNRAS 488, 2503(2019)
94.
8/2019
González Hernández, J. I.; Bonifacio, P. et al. (inc. Ludwig, H. -G.)
The 6Li/7Li isotopic ratio in the metal-poor binary CS22876-032
A&A 628, A111(2019)
González Hernández, J. I.; Bonifacio, P. et al. (inc. Ludwig, H. -G.)
The 6Li/7Li isotopic ratio in the metal-poor binary CS22876-032
A&A 628, A111(2019)
93.
7/2019
Pasquini, L.; Pala, A. F. et al. (inc. Ludwig, H. -G.)
Masses of the Hyades white dwarfs. A gravitational redshift measurement
A&A 627, L8(2019)
Pasquini, L.; Pala, A. F. et al. (inc. Ludwig, H. -G.)
Masses of the Hyades white dwarfs. A gravitational redshift measurement
A&A 627, L8(2019)
92.
4/2019
Vasilyev, V.; Amarsi, A. M.; Ludwig, H. -G.; Lemasle, B.
Two-dimensional non-LTE O I 777 nm line formation in radiation hydrodynamics simulations of Cepheid atmospheres
A&A 624, A85(2019)
Vasilyev, V.; Amarsi, A. M.; Ludwig, H. -G.; Lemasle, B.
Two-dimensional non-LTE O I 777 nm line formation in radiation hydrodynamics simulations of Cepheid atmospheres
A&A 624, A85(2019)
91.
4/2019
Giribaldi, R. E.; Ubaldo-Melo, M. L. et al. (inc. Ludwig, H. -G.)
Accurate effective temperature from Hα profiles
A&A 624, A10(2019)
Giribaldi, R. E.; Ubaldo-Melo, M. L. et al. (inc. Ludwig, H. -G.)
Accurate effective temperature from Hα profiles
A&A 624, A10(2019)
90.
3/2019
Leão, I. C.; Pasquini, L. et al. (inc. Ludwig, H. -G.)
Spectroscopic and astrometric radial velocities: Hyades as a benchmark
MNRAS 483, 5026(2019)
Leão, I. C.; Pasquini, L. et al. (inc. Ludwig, H. -G.)
Spectroscopic and astrometric radial velocities: Hyades as a benchmark
MNRAS 483, 5026(2019)
89.
2/2019
Caffau, E.; Bonifacio, P. et al. (inc. Ludwig, H. -G.)
Systematic investigation of chemical abundances derived using IR spectra obtained with GIANO
A&A 622, A68(2019)
Caffau, E.; Bonifacio, P. et al. (inc. Ludwig, H. -G.)
Systematic investigation of chemical abundances derived using IR spectra obtained with GIANO
A&A 622, A68(2019)
88.
1/2019
Sonoi, T.; Ludwig, H. -G. et al.
Calibration of mixing-length parameter α for MLT and FST models by matching with CO5BOLD models
A&A 621, A84(2019)
Sonoi, T.; Ludwig, H. -G. et al.
Calibration of mixing-length parameter α for MLT and FST models by matching with CO5BOLD models
A&A 621, A84(2019)
87.
12/2018
François, P.; Caffau, E. et al. (inc. Ludwig, H. -G.; Koch, A.; Klessen, R.; Christlieb, N.)
TOPoS. V. Abundance ratios in a sample of very metal-poor turn-off stars
A&A 620, A187(2018)
François, P.; Caffau, E. et al. (inc. Ludwig, H. -G.; Koch, A.; Klessen, R.; Christlieb, N.)
TOPoS. V. Abundance ratios in a sample of very metal-poor turn-off stars
A&A 620, A187(2018)
86.
12/2018
Manchon, L.; Belkacem, K. et al. (inc. Ludwig, H. -G.)
Influence of metallicity on the near-surface effect on oscillation frequencies
A&A 620, A107(2018)
Manchon, L.; Belkacem, K. et al. (inc. Ludwig, H. -G.)
Influence of metallicity on the near-surface effect on oscillation frequencies
A&A 620, A107(2018)
85.
12/2018
Cukanovaite, E.; Tremblay, P. -E. et al. (inc. Ludwig, H. -G.)
Pure-helium 3D model atmospheres of white dwarfs
MNRAS 481, 1522(2018)
Cukanovaite, E.; Tremblay, P. -E. et al. (inc. Ludwig, H. -G.)
Pure-helium 3D model atmospheres of white dwarfs
MNRAS 481, 1522(2018)
84.
9/2018
Dravins, Dainis; Gustavsson, Martin; Ludwig, Hans-Günter
Spatially resolved spectroscopy across stellar surfaces. III. Photospheric Fe I lines across HD 189733A (K1 V)
A&A 616, A144(2018)
Dravins, Dainis; Gustavsson, Martin; Ludwig, Hans-Günter
Spatially resolved spectroscopy across stellar surfaces. III. Photospheric Fe I lines across HD 189733A (K1 V)
A&A 616, A144(2018)
83.
9/2018
Černiauskas, A.; Kučinskas, A. et al. (inc. Ludwig, H. -G.)
Abundance of zinc in the red giants of Galactic globular cluster 47 Tucanae
A&A 616, A142(2018)
Černiauskas, A.; Kučinskas, A. et al. (inc. Ludwig, H. -G.)
Abundance of zinc in the red giants of Galactic globular cluster 47 Tucanae
A&A 616, A142(2018)
82.
8/2018
Černiauskas, A.; Kučinskas, A. et al. (inc. Ludwig, H. -G.)
Abundances of Mg and K in the atmospheres of turn-off starsin Galactic globular cluster 47 Tucanae
A&A 615, A173(2018)
Černiauskas, A.; Kučinskas, A. et al. (inc. Ludwig, H. -G.)
Abundances of Mg and K in the atmospheres of turn-off starsin Galactic globular cluster 47 Tucanae
A&A 615, A173(2018)
81.
5/2018
Kučinskas, A.; Klevas, J. et al. (inc. Ludwig, H. -G.)
Using the CIFIST grid of CO5BOLD 3D model atmospheres to study the effects of stellar granulation on photometric colours. II. The role of convection across the H-R diagram
A&A 613, A24(2018)
Kučinskas, A.; Klevas, J. et al. (inc. Ludwig, H. -G.)
Using the CIFIST grid of CO5BOLD 3D model atmospheres to study the effects of stellar granulation on photometric colours. II. The role of convection across the H-R diagram
A&A 613, A24(2018)
80.
4/2018
Bonifacio, P.; Caffau, E. et al. (inc. Ludwig, H. -G.; Koch, A.; Klessen, R. S.; Christlieb, N.)
TOPoS. IV. Chemical abundances from high-resolution observations of seven extremely metal-poor stars
A&A 612, A65(2018)
Bonifacio, P.; Caffau, E. et al. (inc. Ludwig, H. -G.; Koch, A.; Klessen, R. S.; Christlieb, N.)
TOPoS. IV. Chemical abundances from high-resolution observations of seven extremely metal-poor stars
A&A 612, A65(2018)
79.
3/2018
Bonifacio, P.; Caffau, E. et al. (inc. Homeier, D.; Ludwig, H. -G.)
Using the CIFIST grid of CO5BOLD 3D model atmospheres to study the effects of stellar granulation on photometric colours. I. Grids of 3D corrections in the UBVRI, 2MASS, HIPPARCOS, Gaia, and SDSS systems
A&A 611, A68(2018)
Bonifacio, P.; Caffau, E. et al. (inc. Homeier, D.; Ludwig, H. -G.)
Using the CIFIST grid of CO5BOLD 3D model atmospheres to study the effects of stellar granulation on photometric colours. I. Grids of 3D corrections in the UBVRI, 2MASS, HIPPARCOS, Gaia, and SDSS systems
A&A 611, A68(2018)
78.
3/2018
Vasilyev, V.; Ludwig, H. -G. et al. (inc. Lemasle, B.)
Spectroscopic properties of a two-dimensional time-dependent Cepheid model. II. Determination of stellar parameters and abundances
A&A 611, A19(2018)
Vasilyev, V.; Ludwig, H. -G. et al. (inc. Lemasle, B.)
Spectroscopic properties of a two-dimensional time-dependent Cepheid model. II. Determination of stellar parameters and abundances
A&A 611, A19(2018)
77.
1/2018
Klevas, J.; Kučinskas, A. et al. (inc. Ludwig, H. -G.)
Impact of magnetic fields on the structure of convective atmospheres of red giant stars
CoSka 48, 280(2018)
Klevas, J.; Kučinskas, A. et al. (inc. Ludwig, H. -G.)
Impact of magnetic fields on the structure of convective atmospheres of red giant stars
CoSka 48, 280(2018)
76.
10/2017
Vasilyev, V.; Ludwig, H. -G. et al. (inc. Lemasle, B.)
Spectroscopic properties of a two-dimensional time-dependent Cepheid model. I. Description and validation of the model
A&A 606, A140(2017)
Vasilyev, V.; Ludwig, H. -G. et al. (inc. Lemasle, B.)
Spectroscopic properties of a two-dimensional time-dependent Cepheid model. I. Description and validation of the model
A&A 606, A140(2017)
75.
10/2017
Wedemeyer, Sven; Kučinskas, Arūnas et al. (inc. Ludwig, Hans-Günter)
Three-dimensional hydrodynamical CO5BOLD model atmospheres of red giant stars. VI. First chromosphere model of a late-type giant
A&A 606, A26(2017)
Wedemeyer, Sven; Kučinskas, Arūnas et al. (inc. Ludwig, Hans-Günter)
Three-dimensional hydrodynamical CO5BOLD model atmospheres of red giant stars. VI. First chromosphere model of a late-type giant
A&A 606, A26(2017)
74.
9/2017
Dravins, Dainis; Ludwig, Hans-Günter et al.
Spatially resolved spectroscopy across stellar surfaces. II. High-resolution spectra across HD 209458 (G0 V)
A&A 605, A91(2017)
Dravins, Dainis; Ludwig, Hans-Günter et al.
Spatially resolved spectroscopy across stellar surfaces. II. High-resolution spectra across HD 209458 (G0 V)
A&A 605, A91(2017)
73.
9/2017
Dravins, Dainis; Ludwig, Hans-Günter et al.
Spatially resolved spectroscopy across stellar surfaces. I. Using exoplanet transits to analyze 3D stellar atmospheres
A&A 605, A90(2017)
Dravins, Dainis; Ludwig, Hans-Günter et al.
Spatially resolved spectroscopy across stellar surfaces. I. Using exoplanet transits to analyze 3D stellar atmospheres
A&A 605, A90(2017)
72.
8/2017
Duffau, S.; Caffau, E. et al. (inc. Christlieb, N.; Ludwig, H. -G.)
The Gaia-ESO Survey: Galactic evolution of sulphur and zinc
A&A 604, A128(2017)
Duffau, S.; Caffau, E. et al. (inc. Christlieb, N.; Ludwig, H. -G.)
The Gaia-ESO Survey: Galactic evolution of sulphur and zinc
A&A 604, A128(2017)
71.
7/2017
Černiauskas, A.; Kučinskas, A. et al. (inc. Ludwig, H. -G.)
Abundances of Na, Mg, and K in the atmospheres of red giant branch stars of Galactic globular cluster 47 Tucanae
A&A 604, A35(2017)
Černiauskas, A.; Kučinskas, A. et al. (inc. Ludwig, H. -G.)
Abundances of Na, Mg, and K in the atmospheres of red giant branch stars of Galactic globular cluster 47 Tucanae
A&A 604, A35(2017)
70.
7/2017
Thygesen, Anders O.; Kirby, Evan N. et al. (inc. Ludwig, Hans-G.)
An Investigation of the Formation and Line Properties of MgH in 3D Hydrodynamical Model Stellar Atmospheres
ApJ 843, 144(2017)
Thygesen, Anders O.; Kirby, Evan N. et al. (inc. Ludwig, Hans-G.)
An Investigation of the Formation and Line Properties of MgH in 3D Hydrodynamical Model Stellar Atmospheres
ApJ 843, 144(2017)
69.
3/2017
Prakapavičius, D.; Kučinskas, A. et al. (inc. Ludwig, H. -G.)
Three-dimensional hydrodynamical CO5BOLD model atmospheres of red giant stars. V. Oxygen abundance in the metal-poor giant HD 122563 from OH UV lines
A&A 599, A128(2017)
Prakapavičius, D.; Kučinskas, A. et al. (inc. Ludwig, H. -G.)
Three-dimensional hydrodynamical CO5BOLD model atmospheres of red giant stars. V. Oxygen abundance in the metal-poor giant HD 122563 from OH UV lines
A&A 599, A128(2017)
68.
3/2017
Sonoi, T.; Belkacem, K. et al. (inc. Ludwig, H. -G.)
Computation of eigenfrequencies for equilibrium models including turbulent pressure
A&A 600, A31(2017)
Sonoi, T.; Belkacem, K. et al. (inc. Ludwig, H. -G.)
Computation of eigenfrequencies for equilibrium models including turbulent pressure
A&A 600, A31(2017)
67.
2/2017
Gallagher, A. J.; Caffau, E. et al. (inc. Homeier, D.; Ludwig, H. -G.)
An in-depth spectroscopic examination of molecular bands from 3D hydrodynamical model atmospheres. II. Carbon-enhanced metal-poor 3D model atmospheres
A&A 598, L10(2017)
Gallagher, A. J.; Caffau, E. et al. (inc. Homeier, D.; Ludwig, H. -G.)
An in-depth spectroscopic examination of molecular bands from 3D hydrodynamical model atmospheres. II. Carbon-enhanced metal-poor 3D model atmospheres
A&A 598, L10(2017)
66.
10/2016
Caffau, E.; Bonifacio, P. et al. (inc. Christlieb, N.; Glover, S.; Klessen, R.; Ludwig, H. -G.)
TOPoS. III. An ultra iron-poor multiple CEMP system
A&A 595, L6(2016)
Caffau, E.; Bonifacio, P. et al. (inc. Christlieb, N.; Glover, S.; Klessen, R.; Ludwig, H. -G.)
TOPoS. III. An ultra iron-poor multiple CEMP system
A&A 595, L6(2016)
65.
9/2016
Ludwig, H. -G.; Steffen, M.
Hydrodynamical model atmospheres: Their impact on stellar spectroscopy and asteroseismology of late-type stars
AN 337, 844(2016)
Ludwig, H. -G.; Steffen, M.
Hydrodynamical model atmospheres: Their impact on stellar spectroscopy and asteroseismology of late-type stars
AN 337, 844(2016)
64.
9/2016
Gallagher, A. J.; Caffau, E. et al. (inc. Ludwig, H. -G.)
An in-depth spectroscopic examination of molecular bands from 3D hydrodynamical model atmospheres. I. Formation of the G-band in metal-poor dwarf stars
A&A 593, A48(2016)
Gallagher, A. J.; Caffau, E. et al. (inc. Ludwig, H. -G.)
An in-depth spectroscopic examination of molecular bands from 3D hydrodynamical model atmospheres. I. Formation of the G-band in metal-poor dwarf stars
A&A 593, A48(2016)
63.
5/2016
Hansen, C. J.; Rich, R. M. et al. (inc. Ludwig, H. -G.; Koch, A.)
Chemical abundances in a high-velocity RR Lyrae star near the bulge
A&A 590, A39(2016)
Hansen, C. J.; Rich, R. M. et al. (inc. Ludwig, H. -G.; Koch, A.)
Chemical abundances in a high-velocity RR Lyrae star near the bulge
A&A 590, A39(2016)
62.
4/2016
Wedemeyer, S.; Bastian, T. et al. (inc. Ludwig, H. -G.)
Solar Science with the Atacama Large Millimeter/Submillimeter Array—A New View of Our Sun
SSRv 200, 1(2016)
Wedemeyer, S.; Bastian, T. et al. (inc. Ludwig, H. -G.)
Solar Science with the Atacama Large Millimeter/Submillimeter Array—A New View of Our Sun
SSRv 200, 1(2016)
61.
4/2016
Thygesen, A. O.; Sbordone, L. et al. (inc. Christlieb, N.; Ludwig, H. -G.)
The chemical composition of red giants in 47 Tucanae. II. Magnesium isotopes and pollution scenarios
A&A 588, A66(2016)
Thygesen, A. O.; Sbordone, L. et al. (inc. Christlieb, N.; Ludwig, H. -G.)
The chemical composition of red giants in 47 Tucanae. II. Magnesium isotopes and pollution scenarios
A&A 588, A66(2016)
60.
2/2016
Klevas, J.; Kučinskas, A. et al. (inc. Ludwig, H. -G.)
Lithium spectral line formation in stellar atmospheres. The impact of convection and NLTE effects
A&A 586, A156(2016)
Klevas, J.; Kučinskas, A. et al. (inc. Ludwig, H. -G.)
Lithium spectral line formation in stellar atmospheres. The impact of convection and NLTE effects
A&A 586, A156(2016)
59.
1/2016
Caffau, E.; Andrievsky, S. et al. (inc. Ludwig, H. -G.)
GIANO Y-band spectroscopy of dwarf stars: Phosphorus, sulphur, and strontium abundances
A&A 585, A16(2016)
Caffau, E.; Andrievsky, S. et al. (inc. Ludwig, H. -G.)
GIANO Y-band spectroscopy of dwarf stars: Phosphorus, sulphur, and strontium abundances
A&A 585, A16(2016)
58.
11/2015
Sonoi, T.; Samadi, R. et al. (inc. Ludwig, H. -G.)
Surface-effect corrections for solar-like oscillations using 3D hydrodynamical simulations. I. Adiabatic oscillations
A&A 583, A112(2015)
Sonoi, T.; Samadi, R. et al. (inc. Ludwig, H. -G.)
Surface-effect corrections for solar-like oscillations using 3D hydrodynamical simulations. I. Adiabatic oscillations
A&A 583, A112(2015)
57.
11/2015
Steffen, M.; Prakapavičius, D. et al. (inc. Ludwig, H. -G.)
The photospheric solar oxygen project. IV. 3D-NLTE investigation of the 777 nm triplet lines
A&A 583, A57(2015)
Steffen, M.; Prakapavičius, D. et al. (inc. Ludwig, H. -G.)
The photospheric solar oxygen project. IV. 3D-NLTE investigation of the 777 nm triplet lines
A&A 583, A57(2015)
56.
10/2015
Tremblay, P. -E.; Fontaine, G. et al. (inc. Ludwig, H. -G.)
On the Evolution of Magnetic White Dwarfs
ApJ 812, 19(2015)
Tremblay, P. -E.; Fontaine, G. et al. (inc. Ludwig, H. -G.)
On the Evolution of Magnetic White Dwarfs
ApJ 812, 19(2015)
55.
9/2015
Hansen, C. J.; Ludwig, H. -G. et al. (inc. Christlieb, N.; Koch, A.; Seifert, W.)
Stellar science from a blue wavelength range. A possible design for the blue arm of 4MOST
AN 336, 665(2015)
Hansen, C. J.; Ludwig, H. -G. et al. (inc. Christlieb, N.; Koch, A.; Seifert, W.)
Stellar science from a blue wavelength range. A possible design for the blue arm of 4MOST
AN 336, 665(2015)
54.
8/2015
Tremblay, P. -E.; Gianninas, A. et al. (inc. Ludwig, H. -G.)
3D Model Atmospheres for Extremely Low-mass White Dwarfs
ApJ 809, 148(2015)
Tremblay, P. -E.; Gianninas, A. et al. (inc. Ludwig, H. -G.)
3D Model Atmospheres for Extremely Low-mass White Dwarfs
ApJ 809, 148(2015)
53.
7/2015
Gallagher, A. J.; Ludwig, H. -G. et al.
A three-dimensional hydrodynamical line profile analysis of iron lines and barium isotopes in HD 140283
A&A 579, A94(2015)
Gallagher, A. J.; Ludwig, H. -G. et al.
A three-dimensional hydrodynamical line profile analysis of iron lines and barium isotopes in HD 140283
A&A 579, A94(2015)
52.
7/2015
Caffau, E.; Ludwig, H. -G. et al.
The photospheric solar oxygen project. III. Investigation of the centre-to-limb variation of the 630 nm [O I]-Ni I blend
A&A 579, A88(2015)
Caffau, E.; Ludwig, H. -G. et al.
The photospheric solar oxygen project. III. Investigation of the centre-to-limb variation of the 630 nm [O I]-Ni I blend
A&A 579, A88(2015)
51.
7/2015
Bonifacio, P.; Caffau, E. et al. (inc. Koch, A.; Glover, S. C. O.; Clark, P. C.; Christlieb, N.; Ludwig, H. -G.; Klessen, R. S.; Spite, M.)
TOPoS . II. On the bimodality of carbon abundance in CEMP stars Implications on the early chemical evolution of galaxies
A&A 579, A28(2015)
Bonifacio, P.; Caffau, E. et al. (inc. Koch, A.; Glover, S. C. O.; Clark, P. C.; Christlieb, N.; Ludwig, H. -G.; Klessen, R. S.; Spite, M.)
TOPoS . II. On the bimodality of carbon abundance in CEMP stars Implications on the early chemical evolution of galaxies
A&A 579, A28(2015)
50.
4/2015
Dobrovolskas, V.; Kučinskas, A. et al. (inc. Ludwig, H. -G.; Caffau, E.)
Three-dimensional hydrodynamical CO5BOLD model atmospheres of red giant stars. IV. Oxygen diagnostics in extremely metal-poor red giants with infrared OH lines
A&A 576, A128(2015)
Dobrovolskas, V.; Kučinskas, A. et al. (inc. Ludwig, H. -G.; Caffau, E.)
Three-dimensional hydrodynamical CO5BOLD model atmospheres of red giant stars. IV. Oxygen diagnostics in extremely metal-poor red giants with infrared OH lines
A&A 576, A128(2015)
49.
2/2015
Tremblay, P. -E.; Ludwig, H. -G. et al.
Calibration of the Mixing-length Theory for Convective White Dwarf Envelopes
ApJ 799, 142(2015)
Tremblay, P. -E.; Ludwig, H. -G. et al.
Calibration of the Mixing-length Theory for Convective White Dwarf Envelopes
ApJ 799, 142(2015)
48.
12/2014
Thygesen, A. O.; Sbordone, L. et al. (inc. Ludwig, H. -G.)
The chemical composition of red giants in 47 Tucanae. I. Fundamental parameters and chemical abundance patterns
A&A 572, A108(2014)
Thygesen, A. O.; Sbordone, L. et al. (inc. Ludwig, H. -G.)
The chemical composition of red giants in 47 Tucanae. I. Fundamental parameters and chemical abundance patterns
A&A 572, A108(2014)
47.
8/2014
Caffau, E.; Monaco, L. et al. (inc. Sbordone, L.; Ludwig, H. -G.)
Clues on the Galactic evolution of sulphur from star clusters
A&A 568, A29(2014)
Caffau, E.; Monaco, L. et al. (inc. Sbordone, L.; Ludwig, H. -G.)
Clues on the Galactic evolution of sulphur from star clusters
A&A 568, A29(2014)
46.
6/2014
Tremblay, P. -E.; Leggett, S. K. et al. (inc. Ludwig, H. -G.)
White Dwarfs in the UKIRT Infrared Deep Sky Survey Data Release 9
ApJ 788, 103(2014)
Tremblay, P. -E.; Leggett, S. K. et al. (inc. Ludwig, H. -G.)
White Dwarfs in the UKIRT Infrared Deep Sky Survey Data Release 9
ApJ 788, 103(2014)
45.
5/2014
Dobrovolskas, V.; Kučinskas, A. et al. (inc. Ludwig, H. -G.; Caffau, E.; Sbordone, L.)
Abundances of lithium, oxygen, and sodium in the turn-off stars of Galactic globular cluster 47 Tucanae
A&A 565, A121(2014)
Dobrovolskas, V.; Kučinskas, A. et al. (inc. Ludwig, H. -G.; Caffau, E.; Sbordone, L.)
Abundances of lithium, oxygen, and sodium in the turn-off stars of Galactic globular cluster 47 Tucanae
A&A 565, A121(2014)
44.
43.
12/2013
Caffau, E.; Bonifacio, P. et al. (inc. Ludwig, H. -G.; Sbordone, L.)
X-shooter GTO: evidence for a population of extremely metal-poor, alpha-poor stars
A&A 560, A15(2013)
Caffau, E.; Bonifacio, P. et al. (inc. Ludwig, H. -G.; Sbordone, L.)
X-shooter GTO: evidence for a population of extremely metal-poor, alpha-poor stars
A&A 560, A15(2013)
42.
12/2013
Caffau, E.; Bonifacio, P. et al. (inc. Ludwig, H. -G.; Koch, A.; Klessen, R.; Glover, S.; Clark, P.; Christlieb, N.; Sbordone, L.)
TOPoS. I. Survey design and analysis of the first sample
A&A 560, A71(2013)
Caffau, E.; Bonifacio, P. et al. (inc. Ludwig, H. -G.; Koch, A.; Klessen, R.; Glover, S.; Clark, P.; Christlieb, N.; Sbordone, L.)
TOPoS. I. Survey design and analysis of the first sample
A&A 560, A71(2013)
41.
11/2013
Samadi, R.; Belkacem, K. et al. (inc. Caffau, E.; Ludwig, H. -G.)
Stellar granulation as seen in disk-integrated intensity. II. Theoretical scaling relations compared with observations
A&A 559, A40(2013)
Samadi, R.; Belkacem, K. et al. (inc. Caffau, E.; Ludwig, H. -G.)
Stellar granulation as seen in disk-integrated intensity. II. Theoretical scaling relations compared with observations
A&A 559, A40(2013)
40.
11/2013
Tremblay, P. -E.; Ludwig, H. -G. et al.
Spectroscopic analysis of DA white dwarfs with 3D model atmospheres
A&A 559, A104(2013)
Tremblay, P. -E.; Ludwig, H. -G. et al.
Spectroscopic analysis of DA white dwarfs with 3D model atmospheres
A&A 559, A104(2013)
39.
11/2013
Dobrovolskas, V.; Kučinskas, A. et al. (inc. Caffau, E.; Ludwig, H. -G.)
Three-dimensional hydrodynamical CO5BOLD model atmospheres of red giant stars. III. Line formation in the atmospheres of giants located close to the base of the red giant branch
A&A 559, A102(2013)
Dobrovolskas, V.; Kučinskas, A. et al. (inc. Caffau, E.; Ludwig, H. -G.)
Three-dimensional hydrodynamical CO5BOLD model atmospheres of red giant stars. III. Line formation in the atmospheres of giants located close to the base of the red giant branch
A&A 559, A102(2013)
38.
11/2013
Samadi, R.; Belkacem, K.; Ludwig, H. -G.
Stellar granulation as seen in disk-integrated intensity. I. Simplified theoretical modeling
A&A 559, A39(2013)
Samadi, R.; Belkacem, K.; Ludwig, H. -G.
Stellar granulation as seen in disk-integrated intensity. I. Simplified theoretical modeling
A&A 559, A39(2013)
37.
9/2013
Tremblay, P. -E.; Ludwig, H. -G. et al. (inc. Caffau, E.)
Granulation properties of giants, dwarfs, and white dwarfs from the CIFIST 3D model atmosphere grid
A&A 557, A7(2013)
Tremblay, P. -E.; Ludwig, H. -G. et al. (inc. Caffau, E.)
Granulation properties of giants, dwarfs, and white dwarfs from the CIFIST 3D model atmosphere grid
A&A 557, A7(2013)
36.
6/2013
Caffau, E.; Ludwig, H. -G. et al.
The photospheric solar oxygen project. II. Non-concordance of the oxygen abundance derived from two forbidden lines
A&A 554, A126(2013)
Caffau, E.; Ludwig, H. -G. et al.
The photospheric solar oxygen project. II. Non-concordance of the oxygen abundance derived from two forbidden lines
A&A 554, A126(2013)
35.
4/2013
Tremblay, P. -E.; Ludwig, H. -G. et al.
Pure-hydrogen 3D model atmospheres of cool white dwarfs
A&A 552, A13(2013)
Tremblay, P. -E.; Ludwig, H. -G. et al.
Pure-hydrogen 3D model atmospheres of cool white dwarfs
A&A 552, A13(2013)
34.
4/2013
Spite, M.; Caffau, E. et al. (inc. Christlieb, N.; Ludwig, H. -G.)
Carbon-enhanced metal-poor stars: the most pristine objects?
A&A 552, A107(2013)
Spite, M.; Caffau, E. et al. (inc. Christlieb, N.; Ludwig, H. -G.)
Carbon-enhanced metal-poor stars: the most pristine objects?
A&A 552, A107(2013)
33.
3/2013
Ayres, Thomas R.; Lyons, J. R. et al. (inc. Caffau, E.; Ludwig, H. -G.)
Is the Sun Lighter than the Earth? Isotopic CO in the Photosphere, Viewed through the Lens of Three-dimensional Spectrum Synthesis
ApJ 765, 46(2013)
Ayres, Thomas R.; Lyons, J. R. et al. (inc. Caffau, E.; Ludwig, H. -G.)
Is the Sun Lighter than the Earth? Isotopic CO in the Photosphere, Viewed through the Lens of Three-dimensional Spectrum Synthesis
ApJ 765, 46(2013)
32.
3/2013
Li, H. N.; Ludwig, H. -G. et al. (inc. Christlieb, N.; Caffau, E.)
Fluorine Abundances of Galactic Low-metallicity Giants
ApJ 765, 51(2013)
Li, H. N.; Ludwig, H. -G. et al. (inc. Christlieb, N.; Caffau, E.)
Fluorine Abundances of Galactic Low-metallicity Giants
ApJ 765, 51(2013)
31.
3/2013
Caffau, E.; Koch, A. et al. (inc. Grebel, E. K.; Ludwig, H. -G.; Christlieb, N.; Hansen, C. J.; Sbordone, L.)
Velocity and abundance precisions for future high-resolution spectroscopic surveys: A study for 4MOST
AN 334, 197(2013)
Caffau, E.; Koch, A. et al. (inc. Grebel, E. K.; Ludwig, H. -G.; Christlieb, N.; Hansen, C. J.; Sbordone, L.)
Velocity and abundance precisions for future high-resolution spectroscopic surveys: A study for 4MOST
AN 334, 197(2013)
30.
2/2013
Wedemeyer, S.; Ludwig, H. -G. et al.
Three-dimensional magnetohydrodynamic simulations of M-dwarf chromospheres
AN 334, 137(2013)
Wedemeyer, S.; Ludwig, H. -G. et al.
Three-dimensional magnetohydrodynamic simulations of M-dwarf chromospheres
AN 334, 137(2013)
29.
2/2013
Allende Prieto, C.; Koesterke, L. et al. (inc. Caffau, E.; Ludwig, H. -G.)
Convective line shifts for the Gaia RVS from the CIFIST 3D model atmosphere grid
A&A 550, A103(2013)
Allende Prieto, C.; Koesterke, L. et al. (inc. Caffau, E.; Ludwig, H. -G.)
Convective line shifts for the Gaia RVS from the CIFIST 3D model atmosphere grid
A&A 550, A103(2013)
28.
1/2013
Kučinskas, A.; Steffen, M. et al. (inc. Caffau, E.; Ludwig, H. -G.)
Three-dimensional hydrodynamical CO5BOLD model atmospheres of red giant stars. II. Spectral line formation in the atmosphere of a giant located near the RGB tip
A&A 549, A14(2013)
Kučinskas, A.; Steffen, M. et al. (inc. Caffau, E.; Ludwig, H. -G.)
Three-dimensional hydrodynamical CO5BOLD model atmospheres of red giant stars. II. Spectral line formation in the atmosphere of a giant located near the RGB tip
A&A 549, A14(2013)
27.
12/2012
Ludwig, Johannes; Pasquali, Anna et al. (inc. Grebel, Eva K.)
Giant Galaxies, Dwarfs, and Debris Survey. I. Dwarf Galaxies and Tidal Features around NGC 7331
AJ 144, 190(2012)
Ludwig, Johannes; Pasquali, Anna et al. (inc. Grebel, Eva K.)
Giant Galaxies, Dwarfs, and Debris Survey. I. Dwarf Galaxies and Tidal Features around NGC 7331
AJ 144, 190(2012)
26.
11/2012
Ludwig, H. -G.; Kučinskas, A.
Three-dimensional hydrodynamical CO5BOLD model atmospheres of red giant stars. I. Atmospheric structure of a giant located near the RGB tip
A&A 547, A118(2012)
Ludwig, H. -G.; Kučinskas, A.
Three-dimensional hydrodynamical CO5BOLD model atmospheres of red giant stars. I. Atmospheric structure of a giant located near the RGB tip
A&A 547, A118(2012)
25.
11/2012
Tremblay, P. -E.; Schilbach, E. et al. (inc. Ludwig, H. -G.; Jordan, S.; Röser, S.)
Spectroscopic and photometric studies of white dwarfs in the Hyades
A&A 547, A99(2012)
Tremblay, P. -E.; Schilbach, E. et al. (inc. Ludwig, H. -G.; Jordan, S.; Röser, S.)
Spectroscopic and photometric studies of white dwarfs in the Hyades
A&A 547, A99(2012)
24.
7/2012
Samadi, R.; Belkacem, K. et al. (inc. Caffau, E.; Ludwig, H. -G.)
Amplitudes of solar-like oscillations in red giant stars. Evidence for non-adiabatic effects using CoRoT observations
A&A 543, A120(2012)
Samadi, R.; Belkacem, K. et al. (inc. Caffau, E.; Ludwig, H. -G.)
Amplitudes of solar-like oscillations in red giant stars. Evidence for non-adiabatic effects using CoRoT observations
A&A 543, A120(2012)
23.
6/2012
Bonifacio, P.; Sbordone, L. et al. (inc. Ludwig, H. -G.; Caffau, E.)
Chemical abundances of distant extremely metal-poor unevolved stars
A&A 542, A87(2012)
Bonifacio, P.; Sbordone, L. et al. (inc. Ludwig, H. -G.; Caffau, E.)
Chemical abundances of distant extremely metal-poor unevolved stars
A&A 542, A87(2012)
22.
6/2012
Caffau, E.; Bonifacio, P. et al. (inc. Sbordone, L.; Ludwig, H. -G.)
A primordial star in the heart of the Lion
A&A 542, A51(2012)
Caffau, E.; Bonifacio, P. et al. (inc. Sbordone, L.; Ludwig, H. -G.)
A primordial star in the heart of the Lion
A&A 542, A51(2012)
21.
5/2012
Spite, M.; Andrievsky, S. M. et al. (inc. Ludwig, H. -G.; Caffau, E.)
NLTE determination of the calcium abundance and 3D corrections in extremely metal-poor stars
A&A 541, A143(2012)
Spite, M.; Andrievsky, S. M. et al. (inc. Ludwig, H. -G.; Caffau, E.)
NLTE determination of the calcium abundance and 3D corrections in extremely metal-poor stars
A&A 541, A143(2012)
20.
4/2012
Dobrovolskas, V.; Kučinskas, A. et al. (inc. Caffau, E.; Ludwig, H. -G.)
Barium abundance in red giants of NGC 6752. Non-local thermodynamic equilibrium and three-dimensional effects
A&A 540, A128(2012)
Dobrovolskas, V.; Kučinskas, A. et al. (inc. Caffau, E.; Ludwig, H. -G.)
Barium abundance in red giants of NGC 6752. Non-local thermodynamic equilibrium and three-dimensional effects
A&A 540, A128(2012)
19.
3/2012
Beeck, B.; Collet, R. et al. (inc. Ludwig, H. -G.)
Simulations of the solar near-surface layers with the CO5BOLD, MURaM, and Stagger codes
A&A 539, A121(2012)
Beeck, B.; Collet, R. et al. (inc. Ludwig, H. -G.)
Simulations of the solar near-surface layers with the CO5BOLD, MURaM, and Stagger codes
A&A 539, A121(2012)
18.
3/2012
Monaco, L.; Villanova, S. et al. (inc. Ludwig, H. -G.; Caffau, E.)
Lithium and sodium in the globular clusterM 4 . Detection of a Li-rich dwarf star: preservation or pollution?
A&A 539, A157(2012)
Monaco, L.; Villanova, S. et al. (inc. Ludwig, H. -G.; Caffau, E.)
Lithium and sodium in the globular cluster
A&A 539, A157(2012)
17.
2/2012
Freytag, B.; Steffen, M. et al. (inc. Ludwig, H. -G.)
Simulations of stellar convection with CO5BOLD
JCoPh 231, 919(2012)
Freytag, B.; Steffen, M. et al. (inc. Ludwig, H. -G.)
Simulations of stellar convection with CO5BOLD
JCoPh 231, 919(2012)
16.
0/2012
Ludwig, Hans-Günter; Steffen, Matthias
3D Model Atmospheres of Red Giant Stars
ASSP 26, 125(2012)
Ludwig, Hans-Günter; Steffen, Matthias
3D Model Atmospheres of Red Giant Stars
ASSP 26, 125(2012)
15.
10/2011
Caffau, E.; Bonifacio, P. et al. (inc. Sbordone, L.; Ludwig, H. -G.)
X-Shooter GTO: chemical analysis of a sample of EMP candidates
A&A 534, A4(2011)
Caffau, E.; Bonifacio, P. et al. (inc. Sbordone, L.; Ludwig, H. -G.)
X-Shooter GTO: chemical analysis of a sample of EMP candidates
A&A 534, A4(2011)
14.
9/2011
Caffau, Elisabetta; Bonifacio, Piercarlo et al. (inc. Ludwig, Hans-G.; Sbordone, Luca)
An extremely primitive star in the Galactic halo
Natur 477, 67(2011)
Caffau, Elisabetta; Bonifacio, Piercarlo et al. (inc. Ludwig, Hans-G.; Sbordone, Luca)
An extremely primitive star in the Galactic halo
Natur 477, 67(2011)
13.
7/2011
Tremblay, P. -E.; Ludwig, H. -G. et al.
Solution to the problem of the surface gravity distribution of cool DA white dwarfs from improved 3D model atmospheres
A&A 531, L19(2011)
Tremblay, P. -E.; Ludwig, H. -G. et al.
Solution to the problem of the surface gravity distribution of cool DA white dwarfs from improved 3D model atmospheres
A&A 531, L19(2011)
12.
4/2011
Chiavassa, A.; Pasquato, E. et al. (inc. Ludwig, H. -G.)
Radiative hydrodynamic simulations of red supergiant stars. III. Spectro-photocentric variability, photometric variability, and consequences on Gaia measurements
A&A 528, A120(2011)
Chiavassa, A.; Pasquato, E. et al. (inc. Ludwig, H. -G.)
Radiative hydrodynamic simulations of red supergiant stars. III. Spectro-photocentric variability, photometric variability, and consequences on Gaia measurements
A&A 528, A120(2011)
11.
4/2011
Spite, M.; Caffau, E. et al. (inc. Ludwig, H. -G.)
First stars. XIV. Sulfur abundances in extremely metal-poor stars
A&A 528, A9(2011)
Spite, M.; Caffau, E. et al. (inc. Ludwig, H. -G.)
First stars. XIV. Sulfur abundances in extremely metal-poor stars
A&A 528, A9(2011)
10.
3/2011
Bonifacio, P.; Caffau, E. et al. (inc. Ludwig, H. -G.)
Extremely metal-poor stars in SDSS fields
AN 332, 251(2011)
Bonifacio, P.; Caffau, E. et al. (inc. Ludwig, H. -G.)
Extremely metal-poor stars in SDSS fields
AN 332, 251(2011)
9.
2/2011
Pasquini, L.; Melo, C. et al. (inc. Ludwig, H. -G.)
Gravitational redshifts in main-sequence and giant stars
A&A 526, A127(2011)
Pasquini, L.; Melo, C. et al. (inc. Ludwig, H. -G.)
Gravitational redshifts in main-sequence and giant stars
A&A 526, A127(2011)
8.
2/2011
Caffau, E.; Faraggiana, R. et al. (inc. Ludwig, H. -G.)
The solar photospheric abundance of zirconium
AN 332, 128(2011)
Caffau, E.; Faraggiana, R. et al. (inc. Ludwig, H. -G.)
The solar photospheric abundance of zirconium
AN 332, 128(2011)
7.
12/2010
Karoff, C.; Chaplin, W. J. et al. (inc. Ludwig, H. -G.)
Asteroseismology of solar-type stars with Kepler I: Data analysis
AN 331, 972(2010)
Karoff, C.; Chaplin, W. J. et al. (inc. Ludwig, H. -G.)
Asteroseismology of solar-type stars with Kepler I: Data analysis
AN 331, 972(2010)
6.
12/2010
Bonifacio, P.; Caffau, E.; Ludwig, H. -G.
Cu I resonance lines in turn-off stars of NGC 6752 and NGC 6397. Effects of granulation from CO5BOLD models
A&A 524, A96(2010)
Bonifacio, P.; Caffau, E.; Ludwig, H. -G.
Cu I resonance lines in turn-off stars of NGC 6752 and NGC 6397. Effects of granulation from CO5BOLD models
A&A 524, A96(2010)
5.
11/2010
Sbordone, L.; Bonifacio, P. et al. (inc. Christlieb, N.; Ludwig, H. -G.)
The metal-poor end of the Spite plateau. I. Stellar parameters, metallicities, and lithium abundances
A&A 522, A26(2010)
Sbordone, L.; Bonifacio, P. et al. (inc. Christlieb, N.; Ludwig, H. -G.)
The metal-poor end of the Spite plateau. I. Stellar parameters, metallicities, and lithium abundances
A&A 522, A26(2010)
4.
9/2010
González Hernández, J. I.; Bonifacio, P. et al. (inc. Ludwig, H. -G.)
Galactic evolution of oxygen. OH lines in 3D hydrodynamical model atmospheres
A&A 519, A46(2010)
González Hernández, J. I.; Bonifacio, P. et al. (inc. Ludwig, H. -G.)
Galactic evolution of oxygen. OH lines in 3D hydrodynamical model atmospheres
A&A 519, A46(2010)
3.
7/2010
Caffau, E.; Sbordone, L. et al. (inc. Ludwig, H. -G.)
Sulphur abundances in halo stars from multiplet 3 at 1045 nm
AN 331, 725(2010)
Caffau, E.; Sbordone, L. et al. (inc. Ludwig, H. -G.)
Sulphur abundances in halo stars from multiplet 3 at 1045 nm
AN 331, 725(2010)
2.
5/2010
Caffau, E.; Ludwig, H. -G. et al.
The solar photospheric abundance of carbon. Analysis of atomic carbon lines with the CO5BOLD solar model
A&A 514, A92(2010)
Caffau, E.; Ludwig, H. -G. et al.
The solar photospheric abundance of carbon. Analysis of atomic carbon lines with the CO5BOLD solar model
A&A 514, A92(2010)
1.
4/2010
Behara, N. T.; Bonifacio, P. et al. (inc. Ludwig, H. -G.)
Three carbon-enhanced metal-poor dwarf stars from the SDSS. Chemical abundances from CO5BOLD 3D hydrodynamical model atmospheres
A&A 513, A72(2010)
Behara, N. T.; Bonifacio, P. et al. (inc. Ludwig, H. -G.)
Three carbon-enhanced metal-poor dwarf stars from the SDSS. Chemical abundances from CO5BOLD 3D hydrodynamical model atmospheres
A&A 513, A72(2010)
