Searching for Streams of Ancient Galaxies in the Milky Way's Halo

Details Searching for Streams of Ancient Galaxies in the Milky Way's Halo Searching for Streams of Ancient Galaxies in the Milky Way's Halo

Mar 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002sgdh.conf..210v&link_type=abstract

THE SHAPES OF GALAXIES AND THEIR DARK HALOS. Proceedings of the Yale Cosmology Workshop. Held 28-30 May 2001 in New Haven, Conne

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Scientific paper

We present results from our survey of RR Lyrae stars in the halo of the Milky Way. Since these stars are standard candles, the survey is capable of finding spatial structures in the halo, such as streams of debris left by the destruction of small satellites by the tidal forces of the Milky Way. We have found a large clump of stars at 50 kpc from the galactic center which is likely related to a tidal tail of the Sagittarius dwarf spheroidal galaxy. Several other over-densities were found in different regions. The halo of the Milky Way does not seem to have a uniform distribution of stars far from the galactic center.

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