2010ApJ...725..288C

Query : 2010ApJ...725..288C

2010ApJ...725..288C - Astrophys. J., 725, 288-295 (2010/December-2)

NGC 2419-Another remnant of accretion by the Milky Way.

COHEN J.G., KIRBY E.N., SIMON J.D. and GEHA M.

Abstract (from CDS):

We isolate a sample of 43 upper red giant branch stars in the extreme outer halo Galactic globular cluster (GC) NGC 2419 from two Keck/DEIMOS slitmasks. The probability that there is more than one contaminating halo field star in this sample is extremely low. Analysis of moderate-resolution spectra of these cluster members, as well as of our Keck/HIRES high-resolution spectra of a subsample of them, demonstrates that there is a small but real spread in Ca abundance of ∼0.2 dex within this massive metal-poor GC. This provides additional support to earlier suggestions that NGC 2419 is the remnant of a dwarf galaxy accreted long ago by the Milky Way.

Abstract Copyright: ∼

Journal keyword(s): Galaxy: formation - Galaxy: halo - globular clusters: individual: NGC 2419

CDS comments: Table 1: Objects are not in SIMBAD (no coordinates).

Simbad objects: 16

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Number of rows : 16
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 Mayall II GlC 00 32 46.5323801712 +39 34 40.504803060   14.564 13.807 13.208 12.684 ~ 400 1
2 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 13622 1
3 NGC 1851 GlC 05 14 06.76 -40 02 47.6           ~ 1529 0
4 HD 60771 Pu* 07 37 48.2393539368 +38 52 43.710072168   7.46 7.23     A5 25 0
5 NGC 2419 GlC 07 38 08.51 +38 52 54.9     10.05     ~ 998 0
6 M 53 GlC 13 12 55.25 +18 10 05.4     7.79     ~ 907 0
7 NGC 5139 GlC 13 26 47.28 -47 28 46.1           ~ 3677 0
8 M 5 GlC 15 18 33.22 +02 04 51.7     5.95     ~ 2095 0
9 M 13 GlC 16 41 41.634 +36 27 40.75     5.8     ~ 2291 0
10 M 92 GlC 17 17 07.39 +43 08 09.4     6.52     ~ 2240 0
11 M 22 GlC 18 36 23.94 -23 54 17.1           ~ 1459 0
12 M 54 GlC 18 55 03.33 -30 28 47.5           ~ 1164 0
13 NAME SDG G 18 55 19.0 -30 32 43   4.5 3.6     ~ 2438 2
14 M 15 GlC 21 29 58.33 +12 10 01.2           ~ 3274 0
15 GCl 124 GlC 23 06 44.48 +12 46 19.2   15.6       ~ 307 1
16 NAME Virgo Stellar Stream MGr ~ ~           ~ 110 0

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