IMAGES: a unique view of the galaxy mass assembly since z=1
Abstract
The Large Program IMAGES is near 2/3 of its completion. It provides us with kinematics (GIRAFFE deployable IFUs), gas chemistry (FORS2), detailed morphologies (HST/ACS) and IR photometry (Spitzer) for a set of 70 galaxies representative of intermediate mass galaxies (MJ<=-20.3 or 1.5e10 Mo) at z=0.4-0.75. We discover that, 6 Gyr ago, a significant fraction of galaxies (>40%) had anomalous kinematics, i.e. kinematics significantly discrepant from those of rotational or dispersion supported galaxies. The anomalous kinematics cause the observed large dispersion of the Tully-Fisher relation at large distances. IMAGES will soon allow us to study distant galaxies at a level of detail almost comparable to that of nearby galaxies.
Keywords
Cite
@article{arxiv.0712.1138,
title = {IMAGES: a unique view of the galaxy mass assembly since z=1},
author = {M. Puech and F. Hammer and H. Flores and Y. Yang and B. Neichel},
journal= {arXiv preprint arXiv:0712.1138},
year = {2007}
}
Comments
5 pages, 2 figures, proceeding of the meeting "Science with the VLT in the ELT era", held in garching, 8-12 Oct 2007