A Faint New Milky Way Satellite in Bootes | Zendy

Vasily Belokurov | Zendy; D. B. Zucker | Zendy; N. W. Evans | Zendy; M. I. Wilkinson | Zendy; M. J. Irwin | Zendy; S. T. Hodgkin | Zendy; D. M. Bramich | Zendy; Jonathan Irwin | Zendy; G. Gilmore | Zendy; Beth Willman | Zendy; S. Vidrih | Zendy; Heidi Jo Newberg | Zendy; Rosemary F. Ġ. Wyse | Zendy; M. Fellhauer | Zendy; P. C. Hewett | Zendy; Nathan Cole | Zendy; Eric F. Bell | Zendy; Timothy C. Beers | Zendy; Constance M. Rockosi | Zendy; B. Yanny | Zendy; E. K. Grebel | Zendy; Donald P. Schneider | Zendy; Robert H. Lupton | Zendy; John C. Barentine | Zendy; H. Brewington | Zendy; J. Brinkmann | Zendy; M. Harvanek | Zendy; S. J. Kleinman | Zendy; J. Krzesiński | Zendy; Daniel C. Long | Zendy; A. Nitta | Zendy; J. A. Smith | Zendy; S. Snedden | Zendy

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A Faint New Milky Way Satellite in Bootes

Author(s) -

Vasily Belokurov,

D. B. Zucker,

N. W. Evans,

M. I. Wilkinson,

M. J. Irwin,

S. T. Hodgkin,

D. M. Bramich,

Jonathan Irwin,

G. Gilmore,

Beth Willman,

S. Vidrih,

Heidi Jo Newberg,

Rosemary F. Ġ. Wyse,

M. Fellhauer,

P. C. Hewett,

Nathan Cole,

Eric F. Bell,

Timothy C. Beers,

Constance M. Rockosi,

B. Yanny,

E. K. Grebel,

Donald P. Schneider,

Robert H. Lupton,

John C. Barentine,

H. Brewington,

J. Brinkmann,

M. Harvanek,

S. J. Kleinman,

J. Krzesiński,

Daniel C. Long,

A. Nitta,

J. A. Smith,

S. Snedden

Publication year - 2006

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/507324

Subject(s) - milky way , physics , sky , galaxy , satellite galaxy , astrophysics , magnitude (astronomy) , astronomy , dwarf galaxy , satellite , radius , constellation , red giant branch , local group , computer science , metallicity , computer security

In this Letter, we announce the discovery of a new satellite of the Milky Wayin the constellation of Bootes at a distance of 60 kpc. It was found in asystematic search for stellar overdensities in the North Galactic Cap usingSloan Digital Sky Survey Data Release 5 (SDSS DR5). The color-magnitude diagramshows a well-defined turn-off, red giant branch, and extended horizontalbranch. Its absolute magnitude is -5.8, which makes it one of the faintestgalaxies known. The half-light radius is 220 pc. The isodensity contours areelongated and have an irregular shape, suggesting that Boo may be a disrupteddwarf spheroidal galaxy.Comment: ApJ (Letters), in pres

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