Ruprecht-Karls-Universität Heidelberg

Astronomisches Rechen-Institut

Address:

Astronomisches Rechen-Institut
Mönchhofstr. 12-14
69120 Heidelberg
Germany
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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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Next Astro colloquia
May 12
16:30
Ultraviolet spectroscopy of metal-poor stars: new advances and new opportunities
Ian Roederer (North Carolina State University)
Heidelberg Joint Astronomical Colloquium
Philosophenweg 12, Main Lecture hall (gHS),
May 15
11:00
GRAVITY+ Fringe Science: from Exoplanets to Quantum Foam
Wolfgang Brandner (MPIA)
Königstuhl Kolloquium
Max-Planck-Institut für Astronomie, Level 3 Lecture Hall (301)
May 19
16:30
Early Galactic Disks and Their Connections to Present-Day Galaxies
Oscar Agertz (Lund University)
Heidelberg Joint Astronomical Colloquium
Philosophenweg 12, Main Lecture hall (gHS),

More colloquia

Recent ZAH publications
4/2026
Singh, Amrita; Blanc, Guillermo A. et al. (inc. Sattler, Natascha; Egorova, Evgeniya; Egorov, Oleg; Kreckel, Kathryn)
SDSS-V LVM: A Spatially Resolved Study of the Physical Conditions and the Chemical Abundance Discrepancy in the Lagoon Nebula (M 8)
ApJ 1001, 238(2026)

5/2026
Hassani, Hamid; Rosolowsky, Erik et al. (inc. Ramambason, Lise; Liang, Fu-Heng; Egorov, Oleg V.)
The Hidden Life of Stars: Embedded Beginnings to Asymptotic Giant Branch Endings in the PHANGS─JWST Sample. I. Catalog of Mid-infrared Sources
ApJS 284, 3(2026)

4/2026
Müller-Horn, Johanna; Ramachandran, Varsha et al. (inc. Schösser, Elisa C.; Sander, Andreas A. C.)
Ultraviolet spectroscopy reveals a hot and luminous companion to the Be star+black hole candidate MWC 656
A&A 708, A187(2026)


More publications