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
Jul 23
11:15
Hot, massive stars and their winds: New insights and open puzzles
Andreas Sander (ARI)
ARI Institute Colloquium
ARI, Moenchhofstrasse 12-14, Seminarraum 1.OG
Jul 24
11:00
TBA
David Hogg (NYU)
Königstuhl Kolloquium
Max-Planck-Institut für Astronomie, Level 3 Lecture Hall (301)
Jul 31
11:00
TBA
Ji Wang (OSU)
Königstuhl Kolloquium
Max-Planck-Institut für Astronomie, Level 3 Lecture Hall (301)

More colloquia

Recent ZAH publications
7/2026
Razza, Alessandro; Blanc, Guillermo A. et al. (inc. Scheuermann, Fabian; Ramambason, Lise; Li, Jing; Kreckel, Kathryn; Klessen, Ralf S.; Glover, Simon C. O.; Egorov, Oleg V.; Chevance, Mélanie)
The PHANGS-Hα survey: Ground-based narrowband imaging of nearby star-forming galaxies
A&A 710, A412(2026)

6/2026
Wicker, M.; Wyrzykowski, Ł. et al. (inc. Wambsganss, J.; Tsapras, Y.; Hundertmark, M.)
Gaia20fnr: A binary-lens microlensing event with full orbital motion revealed by four space telescopes
A&A 710, A294(2026)

7/2026
Yan, Hong-Liang; Qin, Jinxiao et al. (inc. Matsuno, Tadafumi)
A Systematic NLTE Study of Very Metal-poor Stars with Metallicity Down to −4.3 dex. II. Lithium Abundance and New Insight of the Lithium Plateau
ApJ 1005, 89(2026)


More publications