KMOS star-forming galaxies Halpha data cubes

In this paper we select a sample of 18 galaxies at z~1, observed in the H{alpha} emission-line with KMOS, to derive accurate kinematics using a novel 3D analysis technique. We use the new code 3DBarolo that models the galaxy emission directly in the 3D observational space, without the need to extract kinematic maps.

This technique's major advantage is that it is not affected by beam smearing and thus it enables the determination of rotation velocity and intrinsic velocity dispersion, even at low spatial resolution. We find that: 1) the rotation curves of these z~1 galaxies rise very steeply within few kiloparsecs and remain flat out to the outermost radius and 2) the H{alpha} velocity dispersions are low, ranging from 15 to 40km/s, which leads to V/{sigma}=3-10.