Ruprecht-Karls-Universität Heidelberg

Welcome to the Centre for Astronomy of Heidelberg University


The findings of a team of astronomers lead by Varsha Ramachandran (ZAH/ARI) reshape our understanding of this iconic cosmic duo. Both the black hole and its companion star are significantly lighter than previously thought. (2025/05/26)

A team of astronomers, including Matteo Maturi from ZAH/ITA, released a catalog of galaxy groups with an unprecedented view into the large-scale structure of the Universe. (2025/05/19)

A groundbreaking study has mapped the full range of turbulent energy across scales in a simulation of the ISM with unprecedented numerical resolution. Ralf Klessen (ZAH/ITA) is one of the main contributors. (2025/05/13)

A new study by the CARMENES project shows that very low-mass stars are likely to host Earth-like planets. On average, there are about two per star. The results have now been published in Astronomy & Astrophysics. (2025/04/28)

Heidelberg researchers have run the largest simulation of the formation and evolution of massive galaxy clusters. Now the simulation data have been published in full, so that others can also use it for their research. (2025/03/05)

Dominika Wylezalek has been appointed as a new Professor at ZAH and Director at ARI, effective March 1, 2025. She will lead the research group “Galaxy Evolution and AGN (GALENA)”. (2025/02/24)


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ASTROPHYSICS CURRICULUM
Astro & Physics Talks
Next Astro colloquia
Jun 06
11:00
New Opportunities with the Sloan Digital Sky Survey V
Michael Blanton (NYU)
Königstuhl Kolloquium
Max-Planck-Institut für Astronomie, Level 3 Lecture Hall (301)
Jun 10
16:30
A new view of the red and distant Universe from JWST/NIRSpec
Anna de Graaff (MPIA)
Heidelberg Joint Astronomical Colloquium
Philosophenweg 12, Main Lecture hall (gHS),
Jun 12
11:15
Confronting the Cosmological Principle: How secure are the foundations of the cosmos?
Geraint Lewis (Sydney University)
ARI Institute Colloquium
ARI, Moenchhofstrasse 12-14, Seminarraum 1.OG

Recent ZAH publications
6/2025
Ziampras, Alexandros; Dullemond, Cornelis P. et al.
Spirals, rings, and vortices shaped by shadows in protoplanetary discs: from radiative hydrodynamical simulations to observable signatures
MNRAS 540, 1185(2025)

6/2025
Vandorou, Aikaterini; Dang, Lisa et al. (inc. Ranc, Clément)
OGLE-2016-BLG-1195Lb: A Sub-Neptune Beyond the Snow Line of an M-dwarf Confirmed by Keck Adaptive Optics
AJ 169, 319(2025)

6/2025
Abe, H.; Abe, S. et al. (inc. Wagner, S. J.; Quirrenbach, A.; Marx, R.; Ait Benkhali, F.)
Multiwavelength study of OT 081: broadband modelling of a transitional blazar
MNRAS 540, 364(2025)