School Objectives

This international school will offer an overview of the observational constraints, the interpretative tools and the theoretical frameworks used for studying the interstellar medium in galaxies from the epoch of reionization to contemporary Universe. Furthermore, it aims to build a synergy between the Galactic and extragalactic ISM communities. Time will be devoted to discussion between participants and lecturers, with the hope of kick-starting original projects.

The current and future generations of instruments allow us to observe galaxies with spatial resolutions and sensitivities that could be achieved only in the Milky Way a mere decade ago. In addition, extragalactic environments, through the diversity of their physical conditions (metallicity, star formation activity, presence of an AGN, etc.), provide laboratories to benchmark gas and dust models across a wider range of parameters than can be accessed in the Milky Way. Finally, progress in data analysis (machine-learning and big data approaches) are progressively revolutionizing science. This school aims to prepare the next generation of astronomers for future paradigm shifts in our understanding of interstellar matter through cosmic time.

Practical Information

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Science Organizing Committee (SOC)

  • Nicolas BOUCHÉ (CRAL, Lyon)
  • Frédéric GALLIANO (AIM, Saclay; chair)
  • Annie HUGHES (IRAP, Toulouse)
  • Guilaine LAGACHE (LAM, Marseille)
  • Jérôme PETY (IRAM, Grenoble)
  • Philippe SALOMÉ (LERMA, Paris)
  • Patrice THEULÉ (LAM, Marseille)
  • Nathalie YSARD (IAS, Orsay)

Scope of the Sessions

1. Observational Inventory

1.1 Overview of Extragalactic ISM Properties

Three lectures will give an observational account of what we know about interstellar gas and dust properties, from nearby galaxies to the distant Universe.

1.2 Detailed Studies of our Nearby Environment

Two lectures will give an observational account of what we know about gas and dust properties in the Milky Way.

2. Interpreting ISM Observations

2.1 Microphysical Models

The goal of this session is to review the techniques aimed at deriving relevant physical parameters, from observations. These lectures will discuss not only the underlying physics of the different models, but also the available diagnostics, as a function of environmental conditions, spatial resolution and spectral coverage.

2.2 Macroscopic Application

Two lectures will present how to use microphysical models to consistently interpret large-scale galactic observations, accounting for the mixing of physical conditions.

3. Star Formation and Feedback, from Small to Large Scales

3.1 Factors Impacting the Star Formation Process

Three lectures will present the current state-of-the art numerical simulations of the dynamics of the ISM at different spatial scales.

3.2 Lifecycle of Interstellar Matter

This session will discuss the elemental and dusty enrichment of the interstellar matter, its cycle through repeated waves of star formation, as well as galactic fountains.


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