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

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

2006-09-19

arxiv.org/abs/astro-ph/0609551v1

NewAstron.Rev.51:29-33,2007

Astronomy and Astrophysics

Astrophysics

7 pages, 3 figures, to be published in 'The Fate of Gas in Galaxies', editors R. Morganti et al., New Astronomy Review (Elsevi

Scientific paper

10.1016/j.newar.2006.10.013

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.

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