2006ApJ...647L.111B

Query : 2006ApJ...647L.111B

2006ApJ...647L.111B - Astrophys. J., 647, L111-L114 (2006/August-3)

A faint new Milky Way satellite in Bootes.

BELOKUROV V., ZUCKER D.B., EVANS N.W., WILKINSON M.I., IRWIN M.J., HODGKIN S., BRAMICH D.M., IRWIN J.M., GILMORE G., WILLMAN B., VIDRIH S., NEWBERG H.J., WYSE R.F.G., FELLHAUER M., HEWETT P.C., COLE N., BELL E.F., BEERS T.C., ROCKOSI C.M., YANNY B., GREBEL E.K., SCHNEIDER D.P., LUPTON R., BARENTINE J.C., BREWINGTON H., BRINKMANN J., HARVANEK M., KLEINMAN S.J., KRZESINSKI J., LONG D., NITTA A., SMITH J.A. and SNEDDEN S.A.

Abstract (from CDS):

We announce the discovery of a new satellite of the Milky Way in the constellation of Bootes at a distance of ∼60 kpc. It was found in a systematic search for stellar overdensities in the north Galactic cap using Sloan Digital Sky Survey Data Release 5. The color-magnitude diagram shows a well-defined turnoff, red giant branch, and extended horizontal branch. Its absolute magnitude is MV~-5.8 mag, which makes it one of the faintest galaxies known. The half-light radius is ∼220 pc. The isodensity contours are elongated and have an irregular shape, suggesting that Boo may be a disrupted dwarf spheroidal galaxy.

Abstract Copyright: ∼

Journal keyword(s): Galaxies: Dwarf - galaxies: individual (Bootes) - Galaxies: Local Group

CDS comments: Object in the title is NAME BOOTES SATELLITE

Simbad objects: 7

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Number of rows : 7
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NAME UMa I Galaxy G 10 34 52.80 +51 55 12.0     14.4     ~ 355 1
2 NAME Willman 1 G 10 49 21.0 +51 03 00     15.2     ~ 345 0
3 NAME CVn I dSph G 13 28 03.5 +33 33 21     13.1     ~ 352 1
4 NAME Bootes Dwarf Spheroidal Galaxy G 14 00 00.0 +14 30 00     12.8     ~ 491 0
5 Z 318-18 G 15 09 08.0 +67 13 21   13.60 10.6     ~ 1459 0
6 M 92 GlC 17 17 07.39 +43 08 09.4     6.52     ~ 2240 0
7 NAME Local Group GrG ~ ~           ~ 9325 0

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