A Curious Milky Way Satellite in Ursa Major

B. Zucker, D.; Belokurov, Vasily; W. Evans, N.; Kleyna, Jan; J. Irwin, M.; I. Wilkinson, M.; Fellhauer, M.; M. Bramich, D.; Gilmore, G.; Jo Newberg, Heidi; Yanny, B.; A. Smith, J.; C. Hewett, P.; F. Bell, Eric; Rix, Hans‐Walter; Y. Gnedin, Oleg; Vidrih, S.; F. Ġ. Wyse, Rosemary; Willman, Beth; K. Grebel, E.; P. Schneider, Donald; C. Beers, Timothy; Y. Kniazev, A.; C. Barentine, John; Brewington, H.; Brinkmann, J.; Harvanek, Michael; J. Kleinman, S.; Krzesiński, J.; C. Long, Daniel; Nitta, A.; Snedden, S.

doi:10.1086/508628

Public

A Curious Milky Way Satellite in Ursa Major

Shared by NobleBlocks on Sep 21, 2006 • 12:00 AM UTC

Authors:

D. B. Zucker

Vasily Belokurov

N. W. Evans

Abstract

In this Letter, we study a localized stellar overdensity in the constellation of Ursa Major, first identified in Sloan Digital Sky Survey (SDSS) data and subsequently followed up with Subaru imaging. Its color-magnitude diagram (CMD) shows a well-defined sub-giant branch, main sequence and turn-off,...

Subject

Physics

Milky Way

Astrophysics

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