Reaching to the Edge of the Milky Way Halo with SDSS

Details Reaching to the Edge of the Milky Way Halo with SDSS Reaching to the Edge of the Milky Way Halo with SDSS

2003-09-02

arxiv.org/abs/astro-ph/0309074v1

ASPConf.Ser.317:179,2004

Astronomy and Astrophysics

Astrophysics

7 pages, 5 figures, uses newpasp.sty, ``Milky Way Surveys: The Structure and Evolution of Our Galaxy'', Boston, June 14-17, 20

Scientific paper

We discuss a sample of over 3000 candidate RR Lyrae stars selected by various methods using Sloan Digital Sky Survey data for about 1000 deg^2 of sky. These stars probe the halo structure out to ~100 kpc from the Galactic center. Their spatial and radial velocity distributions are very inhomogeneous, with the most prominent features tracing the Sgr dwarf tidal stream. Outside the Sgr dwarf tidal stream, the spatial distribution in the 5-60 kpc range of Galactocentric radius R is well described by an R^{-3} power law.

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