Ruprecht-Karls-Universität Heidelberg

Astronomisches Rechen-Institut

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, 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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News
Colloquia
Apr 29
16:30
The build-up of galactic nuclei: how do black holes get there?
Nadine Neumayer (MPIA)
Heidelberg Joint Astronomical Colloquium
Philosophenweg 12, Main Lecture hall (gHS),
May 02
11:00
TBA
Julia Seidel (ESO)
Königstuhl Kolloquium
Max-Planck-Institut für Astronomie, Level 3 Lecture Hall (301)
May 02
11:00
TBA
Alexander Plavin (BHI, Harward)
Königstuhl Kolloquium
Max-Planck-Institut für Astronomie, Level 3 Lecture Hall (301)

Recent publications
4/2025
Petit, Q.; Ducourant, C. et al. (inc. Wambsganss, J.)
Gaia GraL: Gaia gravitational lens systems: IX. Using XGBoost to explore the Gaia Focused Product Release GravLens catalogue
A&A 696, A51(2025)

4/2025
Wang, Wuji; De Breuck, Carlos et al. (inc. Groth, Julian T.; de Oliveira, Bruno Dall'Agnol; Kukreti, Pranav; Rupke, David S. N.; Wylezalek, Dominika)
JWST + ALMA ubiquitously discover companion systems within ≲18 kpc around four z ≈ 3.5 luminous radio-loud AGN
A&A 696, A88(2025)

4/2025
Chown, Ryan; Leroy, Adam K. et al. (inc. Kreckel, Kathryn; Klessen, Ralf S.; Egorov, Oleg V.; Chevance, Mélanie)
Polycyclic Aromatic Hydrocarbon and CO(2–1) Emission at 50–150 pc Scales in 70 Nearby Galaxies
ApJ 983, 64(2025)