Staratlyon 2023

From 06/26/2023 to 06/30/2023

Lyon - France


Stars are the visible building blocks of the cosmic structures, and as such are essential for our understanding of the Universe and the physical processes that govern its evolution. Star formation lies at the centre of the interstellar matter cycle that drives cosmic evolution. Although star formation is recognised to be central in a wide range of astrophysical processes (galaxy formation and evolution, molecular cloud evolution and destruction, planet formation, and eventually the development of life), it is one of the least understood processes in the Universe.

Various new instruments have been designed to probe different aspects of the interstellar matter forming stars in the Milky Way, as well as in distant galaxies. The current interferometers, such as ALMA, SMA, and NOEMA, keep increasing the spatial resolution available with the best submillimetre and millimetre observing capabilities. It gives access to small scale structures such as extragalactic molecular clouds, accretion discs, outflows launching sites, and core-scale fragmentation in the Milky Way. The observational data provided by polarimeter on the Planck satellite, the SMA, or ALMA yields indirect information on the structure of the magnetic field in the ISM as well as on the nature of the Galactic dust. Last, star formation is one of the fundamental questions to be addressed by the JWST that will shed light on star forming regions with unprecedented sensitivity in the mid-infrared. In parallel, important international efforts are undertaken to develop large numerical simulations designed for star formation, molecular cloud formation and evolution, as well as the formation of galaxies. These simulations are very challenging because of the complex and multi-scale physics involved, which require the development of new algorithms aimed at massively parallel architectures.

The aim of this workshop is to bring together the communities related to star formation through the physical scales and cosmic times. This topic is particularly timely for defining major explorations of the star forming Universe to be carried out in the next decade with new instruments designed for observations and exascale HPC. The state-of-the-art of the three pillars of modern astrophysics, theory, observation, and numerical simulations, will be represented. The program will be divided into eight sessions. Each session will be covered by invited reviews, invited presentations as well a large fraction of contributed talks.

Looking forward to see you in Lyon in early summer 2023!


1/ Physic and numerics for star formation
2/ Isolated star formation: from brown dwarfs to massive stars
3/ Cluster formation
4/ Protostellar disc formation and evolution
5/ Initial Mass Function and Star Formation Rate
6/ Stellar feedback on molecular clouds
7/ Galactic disc formation and evolution
8/ Star and galactic disc formation across redshift

Confirmed invited reviews

- Ivan Cabrera-Ziri (University of Heidelberg, Germany) - Session 3
- Avishai Dekel (Hebrew University of Jerusalem, Israel) - Session 8
- James Di Francesco (Herzberg Astronomy and Astrophysics Research Centre, Canada) - Session 2
- Reinhard Genzel (Max Planck Institute for Extraterrestrial Physics, Germany) - Session 7
- Patrick Hennebelle (CEA Saclay, France) - Session 5
- Shu-ichiro Inutsuka (University of Nagoya, Japan) - Session 1
- Mark Krumholz (Australian National University, Australia) - Session 5
- Adam Leroy (Ohio State University, USA) - Session 6
- Anaëlle Maury (CEA Saclay, France) - Session 4
- Raffaella Schneider (University of Rome, Italy) - Session 8
- Alison Sills (McMaster University, Canada) - Session 3
- Kengo Tomida (University of Osaka, Japan) - Session 2
- Yusuke Tsukamoto (University of Kagoshima, Japan) - Session 4
- Stefanie Walch (University of Cologne, Germany) - Session 6