Radial Distributions of Dark and Lunimous Matter in Spirals

Details Radial Distributions of Dark and Lunimous Matter in Spirals Radial Distributions of Dark and Lunimous Matter in Spirals

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aas...203.3202k&link_type=abstract

American Astronomical Society Meeting 203, #32.02; Bulletin of the American Astronomical Society, Vol. 35, p.1255

Astronomy and Astrophysics

Astronomy

Scientific paper

We investigate the radial distributions of dark and luminous matter in local spiral galaxies spanning a range of Hubble types. The distributions are derived from multi-band imaging from the Ohio State University Bright Spiral Galaxy Survey and rotation curves found in the literature. Using the color-M/L relationships from Bell & de Jong (2001), we create radial stellar mass surface density profiles for each of our galaxies. These profiles are used to create rotation curves for the stellar components; gas masses are derived from HI when available. The resulting stellar and gas mass rotation curves are compared to observed (total mass) rotation curves, and the rotation due to dark matter is determined for each galaxy. Radial distributions of the dark matter are inferred from the dark matter rotation curves and are presented.

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