The Field of Streams: Sagittarius and Its Siblings
Top Cited Papers
- 24 April 2006
- journal article
- Published by American Astronomical Society in The Astrophysical Journal
- Vol. 642 (2) , L137-L140
- https://doi.org/10.1086/504797
Abstract
We use Sloan Digital Sky Survey (SDSS) Data Release 5 (DR5) u,g,r,i,z photometry to study Milky Way halo substructure in the area around the North Galactic Cap. A simple color cut (g-r < 0.4) reveals the tidal stream of the Sagittarius dwarf spheroidal, as well as a number of other stellar structures in the field. Two branches (A and B) of the Sagittarius stream are clearly visible in an RGB-composite image created from 3 magnitude slices, and there is also evidence for a still more distant wrap behind the A branch. A comparison of these data with numerical models suggests that the shape of the Galactic dark halo is close to spherical.Comment: ApJ (Letters), in presKeywords
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