Scientific Rationale

The number of studies of galaxies using integral field spectroscopy (IFS) is rapidly increasing as a consequence of surveys such as ATLAS-3D, CALIFA, SAMI, or MANGA. IFS techniques allow to spatially resolve internal properties of galaxies with unprecedented detail, and therefore they are providing key clues for understanding the structural components of galaxies, their star-formation activity, kinematics, stellar populations, metal distribution, and nuclear activity, as well as how galaxies evolve with time. Nevertheless, for a complete picture of how galaxies work it is crucial to use other multi-wavelength results, targeting galaxies in X-ray, ultraviolet, infrared, and radio frequencies. In particular, HI radio-surveys such as HIPASS, LVHIS, THINGS, Little-THINGS, ALFALFA, HALOGAS or WALLABY are essential to trace the neutral gas content of galaxies, as it provides key information about how the cold gas in converted into stars and galaxy dynamics.

At the same time we are notably increasing our knowledge of the structure and composition of the Milky Way. This is possible thanks to the combination of very detailed observations of individual stars (such those coming from the RAVE or GALAH surveys), detailed analyses of Galactic nebulae, large field studies of the interstellar medium (ISM), and surveys searching for the diffuse gas with and around our Galaxy.

Furthermore the latest generation of galaxy simulations are pushing forward higher-resolution, more realistic galaxies which many physical processes included, that trace galaxy evolution following the hierarchical LCDM scenario.

The aim of this Conference is to bring together international experts in both Galactic and extragalactic astronomy to discuss the different components of a galaxy: stars, gas, dust, and dark matter, and where these components are found within and around galaxies, from both an observational (from radio to X-rays, but with a fundamental optical/NIR IFS component) and a theoretical point of view (from the most recent simulations of galaxy assembly to models reproducing the chemical evolution of galaxies), with the final objective of getting a better understanding on the processes that rule the evolution of the galaxies.

 

Science Topics:

  • Structure of the Milky Way: Galactic centre, bulge, thin and think discs, halo, and surroundings.
  • Properties of the ISM (physical and chemical properties of neutral and ionized gas, dust) of the Milky Way.
  • Galactic Archeology in the Milky Way and nearby galaxies.
  • Spatially resolved properties of stellar populations, gas, and dust in galaxies.
  • Neutral gas distribution (atomic and molecular) in and around galaxies.
  • Star-formation in galaxies: how gas is processed into stars and how efficient this process is.
  • Metal distribution in and around galaxies and chemical evolution of galaxies.
  • The role of feedback (stellar winds, SNe and AGN) in regulating star-formation and galaxy evolution.
  • Gas stripping, gas inflows and minor/major mergers as drivers of galactic evolution.
  • Theoretical modelling and empirical constraints of galaxy formation and evolution

 

Please send any queries to: dissection15 at aao.gov.au