1998ApJ...505L.127V


C.D.S. - SIMBAD4 rel 1.7 - 2019.10.19CEST20:31:18

1998ApJ...505L.127V - Astrophys. J., 505, L127-L129 (1998/October-1)

The globular clusters of dwarf spheroidal galaxies.

VAN DEN BERGH S.

Abstract (from CDS):

The possibility that the Sagittarius dwarf spheroidal might have formed as a Searle-Zinn fragment in the outer halo of the Galaxy is discussed. Arguments in favor of this hypothesis are (1) the luminosity distribution of globular clusters in both Sagittarius and in the outer halo (Rgc>80 kpc) appear to be bimodal with peaks near Mv~-5 and -10, and (2) the globular clusters in both Sgr and the outer halo have a significantly larger age spread than do the globulars in the inner halo of the Galaxy. However, a counterargument is that only one of the four globulars associated with Sgr has the large half-light diameter that is diagnostic of outer halo clusters. The absence of globular clusters from all Local Group dwarf spheroidal galaxies fainter than Mv=-12 shows that their specific globular cluster frequency must be lower than it is in the Fornax dwarf spheroidal. This result suggests that Fornax may have had an unusual evolutionary history.

Abstract Copyright:

Journal keyword(s): Galaxy: Globular Clusters: General - Galaxies: Star Clusters

Simbad objects: 13

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Number of rows : 13

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2019
#notes
1 M 32 IG 00 42 41.825 +40 51 54.61 9.51 9.03 8.08     ~ 1969 2
2 NAME Pisces I G 01 03 56.6 +21 53 41   16.18 14.3     ~ 351 0
3 NAME Phoenix Dwarf Galaxy Sy1 01 51 06.3 -44 26 41   13.48 13.2 12.69   ~ 431 2
4 NGC 2419 GlC 07 38 08.51 +38 52 54.9     10.05     ~ 784 0
5 NAME F8D1 G 09 44 47.1 +67 26 19   14.60 13.85     ~ 55 0
6 UGC 9799 Sy2 15 16 44.4894653562 +07 01 17.830884159   15.19 14.17     ~ 409 3
7 ACO 2052 ClG 15 16 45.5 +07 00 01           ~ 664 1
8 NAME SDG G 18 55 03.1 -30 28 42   4.5 3.6     ~ 1640 2
9 M 54 GlC 18 55 03.33 -30 28 47.5           ~ 856 0
10 Cl Terzan 7 GlC 19 17 43.92 -34 39 27.8           ~ 341 0
11 Cl Arp 2 GlC 19 28 44.11 -30 21 20.3     12.41     ~ 287 0
12 Cl Terzan 8 GlC 19 41 44.41 -33 59 58.1     11.54     ~ 242 0
13 NAME Local Group GrG ~ ~           ~ 6660 0

    Equat.    Gal    SGal    Ecl

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2019.10.19-20:31:18

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