Discovery of an Unusual Dwarf Galaxy in the Outskirts of the Milky Way

J. Irwin, M.; Belokurov, Vasily; W. Evans, N.; Ryan‐Weber, Emma; T. A. de Jong, J.; E. Koposov, S.; B. Zucker, D.; T. Hodgkin, S.; Gilmore, G.; Prema, P.; Hebb, Leslie; Begum, A.; Fellhauer, M.; C. Hewett, P.; C. Kennicutt, Robert; I. Wilkinson, M.; M. Bramich, D.; Vidrih, S.; Rix, Hans‐Walter; C. Beers, Timothy; C. Barentine, John; Brewington, H.; Harvanek, Michael; Krzesiński, J.; Long, D.; Nitta, A.; Snedden, S.

doi:10.1086/512183

Public

Discovery of an Unusual Dwarf Galaxy in the Outskirts of the Milky Way

Shared by NobleBlocks on Jan 19, 2007 • 12:00 AM UTC

Authors:

M. J. Irwin

Vasily Belokurov

N. W. Evans

Abstract

We announce the discovery of a new dwarf galaxy, Leo T, in the Local Group. It was found as a stellar overdensity in the Sloan Digital Sky Survey Data Release 5 (SDSS DR5). The color-magnitude diagram of Leo T shows two well-defined features, which we interpret as a red giant branch and a sequence o...

Subject

Physics

Astrophysics

Dwarf galaxy

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