The MASSIVE Survey - V. Spatially-Resolved Stellar Angular Momentum, Velocity Dispersion, and Higher Moments of the 41 Most Massive Local Early-Type Galaxies

We present spatially-resolved two-dimensional stellar kinematics for the 41 most massive early-type galaxies (MK ~ 10^11.8 Msun) of the volume-limited (D < 108 Mpc) MASSIVE survey. For each galaxy, we obtain high-quality spectra in the wavelength range of 3650 to 5850 A from the 246-fiber Mitchel...

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Bibliographic Details
Published in:arXiv.org 2016-09
Main Authors: Veale, Melanie, Chung-Pei, Ma, Thomas, Jens, Greene, Jenny E, McConnell, Nicholas J, Walsh, Jonelle, Ito, Jennifer, Blakeslee, John P, Janish, Ryan
Format: Article
Language:English
Subjects:
Angular momentum
Angular velocity
Anisotropy
Dependence
Field of view
Galactic clusters
Galaxies
Galaxy distribution
Luminosity
Spatial distribution
Star & galaxy formation
Stars & galaxies
Stellar kinematics
Stellar mass
Velocity
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Summary:We present spatially-resolved two-dimensional stellar kinematics for the 41 most massive early-type galaxies (MK ~ 10^11.8 Msun) of the volume-limited (D < 108 Mpc) MASSIVE survey. For each galaxy, we obtain high-quality spectra in the wavelength range of 3650 to 5850 A from the 246-fiber Mitchell integral-field spectrograph (IFS) at McDonald Observatory, covering a 107" x 107" field of view (often reaching 2 to 3 effective radii). We measure the 2-D spatial distribution of each galaxy's angular momentum (lambda and fast or slow rotator status), velocity dispersion (sigma), and higher-order non-Gaussian velocity features (Gauss-Hermite moments h3 to h6). Our sample contains a high fraction (~80% ) of slow and non-rotators with lambda
ISSN:2331-8422
DOI:10.48550/arxiv.1609.00391