A New Milky Way Dwarf Galaxy in Ursa Major

Willman, Beth; J. Dalcanton, Julianne; Martínez‐Delgado, David; A. West, Andrew; R. Blanton, Michael; W. Hogg, David; C. Barentine, John; Brewington, H.; Harvanek, Michael; J. Kleinman, S.; Krzesiński, J.; Long, Dan; H. Neilsen, Eric; Nitta, A.; A. Snedden, Stephanie

doi:10.1086/431760

Public

A New Milky Way Dwarf Galaxy in Ursa Major

Published in The Astrophysical Journal • May 24, 2005

Authors:

Beth Willman

Julianne J. Dalcanton

David Martínez‐Delgado

Abstract

In this Letter, we report the discovery of a new dwarf satellite to the Milky Way, located at (α 2000 , δ 2000 ) = (158 72, 51 92) in the constellation of Ursa Major. This object was detected as an overdensity of red, resolved stars in Sloan Digital Sky Survey data. The color-magnitude diagram of th...

Subject

Milky Way

Physics

Dwarf galaxy

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