The Stability of Galaxy Disks

Type Conference Paper
Names Kyle B. Westfall, D. R. Andersen, M. A. Bershady, T. Martinsson, R. A. Swaters, M. A. Verheijen
Proceedings Title Bulletin of the American Astronomical Society
Conference Name American Astronomical Society, AAS Meeting #221, #146.15
Volume 221
Date January 1, 2013
URL http://adsabs.org/2013AAS.22114615W
Library Catalog labs.adsabs.harvard.edu
Abstract Using measurements of velocity dispersion and mass surface density for both the gas and stellar components, we calculate the multi-component stability (Q) for 30 galaxy disks observed by the DiskMass Survey. Despite their sub-maximality (Bershady et al. 2011, ApJL, 739, 47), we find all disks to be stable with roughly 85% falling in the range 1
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