Welcome on the web page of IAU Division J

The Division J is part of the new structures of the IAU, launched in August 2012, at the Beijing XXVIII GA. It follows the previous Division VIII "Galaxies and the Universe". Division J covers all thematics dealing with the physics of the Universe, and the physics of galaxies composing it, but not in particular the Milky Way, which is relevant to Division H Interstellar Matter and Local Universe. The main topics can be listed in 4 categories: 1- Physics and content of the Universe The early Universe, cosmological models Baryonic and non-baryonic matter, dark matter and dark energy 2- Evolution of structures Cosmic backgrounds (CMB, and all backgrounds from radio to X-ray) Populations of galaxies, galaxy clusters and groups, intergalactic medium 3- Formation and evolution of galaxies Reionization, first objects (AGN, Starbursts) History of star formation Physics of galaxies at all redshifts, rôle of environnement 4- Spatially resolved galaxies Star formation laws in galaxies, resolved stellar populations, Dynamics of sub-structures (bulges, disks, spiral structure..) Division J hosts now 3 Commissions:

Commission 21	Commission 28	Commission 47
Galactic and Extragalaxtic Background Radiation, President: Jayant Murthy	Galaxies, President: Jay Gallagher	Cosmology, President: Brian Schmidt

The Division J has about 2600 members. Any IAU member who works in the field, and who is not yet a member of this division, should contact its current president (2012-2015). The full list of members can be found on these webpages: Com 21 137 members Com 28 1431 members Com 47 956 members or also on the individual IAU membership directory.

Last update: February 2014