Ruprecht-Karls-Universität Heidelberg

Astronomisches Rechen-Institut

Directors:

Prof. Dr. Eva Grebel   and
Prof. Dr. Joachim Wambsganß
Tel: +49 6221 54 1801 (Secretary)
FAX: +49 6221 54 1888

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, stellar dynamics, astrometry, satellite missions, and calendrical calculations.

The ARI is involved in various local, European, and worldwide scientific networks and collaborations. The ARI plays a leading role in the preparation of the Gaia satellite mission of the European Space Agency. The ARI also operates a special high-performance computer for calculating gravitational interactions.

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News
Colloquia
Feb 21
11:00
Young massive stars and their effect on planet formation
Macla Ramirez-Tannus: eXtreme UV Environments
Königstuhl Kolloquium
Max-Planck-Institut für Astronomie, Level 3 Lecture Hall (301)
Feb 28
11:00
TBD
Mark McCaughrean (MPIA)
Königstuhl Kolloquium
Max-Planck-Institut für Astronomie, Level 3 Lecture Hall (301)
Feb 28
11:00
After ELT: Ground-Based Telescopes and Instruments for 2050 and Beyond
Tom Herbst (MPIA)
Königstuhl Kolloquium
MPIA lecture hall,

Recent publications
1/2025
Qin, Songmei; Zhong, Jing et al. (inc. Wu, Kai)
Unveiling the binary nature of NGC 2323
A&A 693, A317(2025)

2/2025
Howil, K.; Wyrzykowski, Ł. et al. (inc. Kaczmarek, Z.)
Uncovering the invisible: A study of Gaia18ajz, a candidate black hole revealed by microlensing
A&A 694, A94(2025)

1/2025
Guarcello, M. G.; Almendros-Abad, V. et al. (inc. Grebel, E. K.)
EWOCS-III: JWST observations of the supermassive star cluster Westerlund 1
A&A 693, A120(2025)