Ruprecht-Karls-Universität Heidelberg

Astronomisches Rechen-Institut

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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
Apr 28
16:30
Strongly Interacting Multiple Planet Systems as a Rosetta Stone for Planet Formation
Trifon Trifonov (Heidelberg University (ZAH/LSW))
Heidelberg Joint Astronomical Colloquium
Philosophenweg 12, Main Lecture hall (gHS),
Apr 30
11:15
Quick dynamical decoupling between gas and stars in galaxy centers
Robin Gopala Tress (MPIA)
ARI Institute Colloquium
ARI, Moenchhofstrasse 12-14, Seminarraum 1.OG
May 05
16:30
Solar models and their uncertainties: the current state and the impact for PLATO
Gaël Buldgen (University of Liege)
Heidelberg Joint Astronomical Colloquium
Philosophenweg 12, Main Lecture hall (gHS),

More colloquia

Recent ZAH publications
4/2026
Scheuermann, Fabian; Kreckel, Kathryn et al. (inc. Ramambason, Lise; Liang, Fu-Heng; Klessen, Ralf S.; Glover, Simon C. O.; Egorov, Oleg; Chevance, Mélanie; Teh, Jia Wei)
Stellar associations powering H II regions: II. Escape fraction of ionising photons
A&A 708, A202(2026)

4/2026
Liang, Fu-Heng; Bureau, Martin et al.
WISDOM Project ─ XXVII. Giant molecular clouds of the lenticular galaxy NGC 1387: similarities with spiral galaxy clouds
MNRAS 547, ag221(2026)

4/2026
Monson, Erik B.; Lehmer, Bret D. et al. (inc. Kreckel, Kathryn; Glover, Simon)
Constraining the Subgalactic Relationship between Star Formation and the Hot Interstellar Medium in NGC 4254
ApJ 1001, 42(2026)


More publications