Stars and Gas in the Inner Parts of Galaxies seen in SAURON Integral Field Observations

Abstract

We give two examples of spiral galaxies that show non-circular gas motions in the inner kiloparsecs, from SAURON integral field spectroscopy. We use harmonic decomposition of the velocity field of the ionized gas to study the underlying mass distribution, employing linear theory. The higher order harmonic terms and the main kinematic features of the observed data are consistent with an analytically constructed simple bar model. We also present maps of a number of strong absorption lines in M 100, derive simple stellar populations and correlate them with features in the gas kinematics.

arXiv comment7 pages, 3 figures, to be published in 'The Fate of Gas in Galaxies', editors R. Morganti et al., New Astronomy Review (Elsevier). needs the elsart.cls style-file. A higher resolution version available at http://www.astro.rug.nl/~peletier/Research.html

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Cited by in corpus (3)

• The Spitzer Survey of Stellar Structure in Galaxies (S^4G)
• Pattern Speeds of Bars and Spiral Arms From H-alpha Velocity Fields
• PROFIT: a new alternative for emission-line PROfile FITting