Ionized gas kinematics of galaxies in the CALIFA survey I. Velocity fields, kinematic parameters of the dominant component, and presence of kinematically distinct gaseous systems

• Published in: Astronomy and astrophysics (Berlin) Vol. 573; p. A59
• Main Authors: Garcia-Lorenzo, B, Marquez, I, Barrera-Ballesteros, J K, Masegosa, J, Husemann, B, Falcon-Barroso, J, Lyubenova, M, Sanchez, S F, Walcher, J, Mast, D
• Format: Journal Article
• Language: English
• Published: 01.01.2015
• Subjects: Astronomy; Criteria; Distortion; Dynamical systems; Galaxies; Kinematics; Legacy; Two dimensional
• ISSN: 0004-6361; 1432-0746
• DOI: 10.1051/0004-6361/201423485

Ionized gas kinematics provide important clues to the dynamical structure of galaxies and hold constraints to the processes driving their evolution. The motivation of this work is to provide an overall characterization of the kinematic behavior of the ionized gas of the galaxies included in the Calar Alto Legacy Integral field Area (CALIFA), offering kinematic clues to potential users of the CALIFA survey for including kinematical criteria in their selection of targets for specific studies. From the first 200 galaxies observed by CALIFA survey in its two configurations, we present the two-dimensional kinematic view of the 177 galaxies satisfaying a gas content/detection threshold. This work constitutes the first determination of the ionized gas kinematics of the galaxies observed in the CALIFA survey. The derived velocity fields, the reported kinematic distortions/peculiarities and the identification of the presence of several gaseous components in different regions of the objects might be used as additional criteria for selecting galaxies for specific studies.