Special Session SS16  1 July 2022

Connecting stellar sources and the ionised ISM

Aims and scope

The ionised interstellar medium (ISM) is a key tracer of the feedback processes linking massive stars with their local and galactic environments. It provides diagnostic information on the gas energetics and key physical conditions (temperature, density, metallicity, pressure) that regulate the star formation process. Efficient spectroscopic mapping campaigns (e.g. PHANGS-MUSE, KCWI, SITELLE, GOTC+, GDIGS, SDSS-V/LVM), in combination with extensive data on resolved stellar population (e.g. PHAT, LEGUS, PHANGS-HST, SDSS-IV/APOGEE, SDSS-V/MWM), are allowing, for the first time, a systematic high-resolution view of the ionised ISM and its relation to ionising sources in nearby galaxies. With the launch of the JWST and new ground-based IR instrumentation (e.g. VLT/ERIS, ELT/HARMONI) we will also be able to extend our knowledge of the resolved properties of star-forming regions and their powering sources towards cosmic noon, and beyond. In this way, we can begin to probe this relationship all the way from the Local Group to the high-redshift Universe, reaching scales comparable to cutting-edge simulations (e.g. SILCC-ZOOM, FIRE, IllustrisTNG).

This symposium aims to bring together observers and modelers studying the ISM in connection with its ionising stellar sources, from the Milky Way to the high redshift Universe. We invite talks that compare recent resolved extragalactic studies with the detailed view of star formation processes in our own Galaxy, and lower resolution large IFS surveys (e.g., CALIFA, MaNGA, SAMI). We aim to place all these observations in the context of current models for stellar feedback, HII region evolution and photoionisation, in order to pave the road for the interpretation of data from upcoming facilities.


  • Stellar feedback, on local (HII regions, diffuse ionised gas) and galactic scales
  • Chemical abundance variations, ISM mixing and small-scale dynamics

Invited speakers

  • Angela Adamo (Stockholm University, Sweden)
  • Mirko Curti (KICC, Cambridge, UK)
  • CÚsar Esteban (IAC, Spain)
  • Mark Krumholz (ANU, Australia)
  • Anna McLeod (Durham University, UK)
  • Stefanie Walch-Gassner (University of Cologne, Germany)

Scientific organisers

Francesco Belfiore (INAF), Oleg Egorov (U. Heidelberg), Kathryn Kreckel (U. Heidelberg)


Francesco Belfiore: francesco.belfiore @ inaf.it (INAF- Arcetri)
Oleg Egorov: oleg.egorov @ uni-heidelberg.de (U. Heidelberg)
Kathryn Kreckel: kathryn.kreckel @ uni-heidelberg.de (U. Heidelberg)

Updated on Wed Jan 26 15:22:30 CET 2022