Stellar Kinematics of Late-Type Barred Spiral Galaxies
Klawiter, Steffi ( University of WIsconsin ); Wilcots, E. M. ( University of WIsconsin ) show affiliations
American Astronomical Society, AAS Meeting #221, id.225.05
Published in Jan 2013
We present the results of a study of the stellar kinematics of a small sample of late-type barred spiral galaxies, including NGC 4123 and the Magellanic spiral, NGC 2537. Our data is obtained using Sparsepak, an integral field unit on the WIYN 3.5m telescope. The spectra obtained were analyzed for the Mg I absorption triplet and the OIII emission line. Gaussian curves are fit to the absorption lines to best estimate the stellar velocity dispersion, rotation curve, and the dynamical mass of each galaxy. We derive values for the stellar velocity dispersion to be between 60 and 80 km/s. We compare results with previous studies of Magellanic spirals, NGC 4618 and NGC 4625, to explore the kinematics of stellar bars in late-type galaxies. This work was supported by the National Science Foundation's REU program through NSF Award AST-1004881.
(c) 2013: American Astronomical Society