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
Oct 16
11:00
TBA
TBA (TBA)
Königstuhl Kolloquium
Max-Planck-Institut für Astronomie, Level 3 Lecture Hall (301)
Oct 20
16:30
Again! - but faster, better, and with more physics: ML-accelerated inference of galaxy properties in deep and wide surveys of the universe
Joel Leja (Penn State University)
Heidelberg Joint Astronomical Colloquium
Philosophenweg 12, Main Lecture hall (gHS),
Oct 21
14:00
Astromix -- differentiable MHD with JAX
Leonard Storcks (IWR)
ARI Special Colloquium
ARI Weberstr., Lounge

More colloquia

Recent ZAH publications
10/2026
Jacob, Arshia M.; Menten, Karl M. et al. (inc. Kabanovic, Slawa)
First detection of C2H+ in the interstellar medium
A&A 714, A137(2026)

10/2026
Henneco, Jan; Basu, Utkarsh R.; Schneider, Fabian R. N.
Binary evolution at the extremes of mass-transfer efficiency: Contact, mergers, and population signatures
A&A 714, A162(2026)

9/2026
Emsellem, Eric; Sutter, Jessica et al. (inc. Egorov, Oleg V.)
A steep mass transition for bar-driven interstellar medium structuring revealed by PHANGS-JWST
A&A 713, A155(2026)


More publications