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H-alpha Velocity Fields of Normal Spiral Disks

2000/10/12 by David R. Andersen, Andersen, David R., M. A. Bershady +13
Engineering · Physics and Astronomy · #Astronomical Observations and Instrumentation #Galaxies: Formation, Evolution, Phenomena #Stellar, planetary, and galactic studies #astro-ph

paper · pdf · doi:10.48550/arxiv.astro-ph/0010250

2 pages, 2 embedded figures. To appear in Disk Galaxies and Galaxy Disks, eds. J.G. Funes & E.M. Corsini (ASP Conference Series). Full resolution poster paper available at http://www.astro.wisc.edu/~andersen/pub.html

arxiv created 2000/10/12 · arxiv updated 2009/12/01

Abstract

We present H-alpha velocity fields for a sample of nearly face--on spiral galaxies observed with DensePak on the WIYN telescope. We combine kinematic inclinations and position angles measured from these data with photometric inclinations and position angles measured from I-band images to show that spiral disks are intrinsically non-circular.

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