Ruprecht-Karls-Universität Heidelberg

Astronomisches Rechen-Institut

Address:

Astronomisches Rechen-Institut
Mönchhofstr. 12-14
69120 Heidelberg
Germany
Directions

The Astronomisches Rechen-Institut (ARI) is part of the newly established Centre for Astronomy of Heidelberg University (Zentrum für Astronomie der Universität Heidelberg or ZAH). The other two institutes in the ZAH are the Institute for Theoretical Astrophysics (Institut für Theoretische Astrophysik or ITA) and the State Observatory Königstuhl (Landessternwarte Königstuhl or LSW).

The scientific activities at the ARI cover a broad range of research areas including cosmology, gravitational lensing, galaxy evolution, star clusters, stellar astrophysics, the interstellar medium, astrometry, satellite missions, and calendrical calculations.

The ARI is involved in various national and international scientific networks and collaborations.  The institute plays a leading role in supporting the Gaia satellite mission of the European Space Agency and participates in the ground-based spectroscopic and photometric SDSS, 4MOST, and LSST surveys.

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News
Colloquia
Jul 11
11:00
Observational constraints on massive black holes in the first billion years
Hannah Übler (MPE)
Königstuhl Kolloquium
Max-Planck-Institut für Astronomie, Level 3 Lecture Hall (301)
Jul 15
16:30
From mass transfer to stripped stars
Pablo Marchant (Ghent University )
Heidelberg Joint Astronomical Colloquium
Philosophenweg 12, Main Lecture hall (gHS),
Jul 17
11:15
On the enigmatic ‘beasts’ - giant low surface brightness galaxies
Anna Saburova (Sternberg Astronomical Institute, Lomonosov Moscow State University)
ARI Institute Colloquium
ARI, Moenchhofstrasse 12-14, Seminarraum 1.OG

Recent publications
6/2025
Gallego, Sofia G.; Mei, Simona et al. (inc. Wylezalek, Dominika)
Coevolution of halo and quasar properties in dense environments: CARLA J1017+6116 at z = 2.8
A&A 698, A243(2025)

7/2025
Meena, Beena; Sabbi, Elena et al. (inc. Grebel, Eva K.; Facchini, Pietro; Klessen, Ralf S.; Pasquali, Anna)
GULP. II. Hierarchical Distribution and Evolution of Young Stellar Structures in NGC 4449
ApJ 987, 33(2025)

6/2025
Parmentier, Geneviève
Cracking the Relation Between Mass and 1P-star Fraction of Globular Clusters. III. Initial Distributions of In Situ and Ex Situ Clusters
ApJ 986, 139(2025)