KMOS3D

Resolved Views of Galaxy Evolution at Cosmic Noon

KMOS3D is a near-IR integral field spectroscopic survey of over 700 galaxies at 0.7 < z < 2.7, the peak epoch of cosmic star formation activity. It uses the efficient multi-IFU KMOS instrument at the ESO Very Large Telescope. The data were obtained as part of a 75-night Guaranteed Observations Program led by the MPE IR/Submm Group and the OPINAS/University Observatory Munich, members of the consortium that built KMOS. KMOS3D uses synergies with multiwavelength ground- and space-based surveys to trace the evolution of spatially resolved Hα+[NII]+[SII] emission line maps and kinematics from a homogeneous sample over 5 Gyr of cosmic history. The targets are drawn from a mass-selected parent sample from the HST 3D-HST grism survey with high-resolution multicolor imaging from the CANDELS survey. The dataset sheds new light on the physical mechanisms driving the early growth and lifecycle of galaxies, and provides a rich legacy for the astronomical community.

This picture is an overview of the Hα velocity fields for 250 resolved and representative KMOS3D galaxies (half at z ~ 0.9 and half at z ~ 2.3), plotted on the same angular scale. The galaxies are sorted as a function of stellar mass and star formation rate normalized to that of the main sequence at the objects' redshift and log(M*/M☉) = 10.5.
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