1998A&A...330..453M

Query : 1998A&A...330..453M

1998A&A...330..453M - Astronomy and Astrophysics, volume 330453-463 (1998/2-2)

The stellar content of the Sagittarius Dwarf Galaxy.

MARCONI G., BUONANNO R., CASTELLANI M., IANNICOLA G., MOLARO P., PASQUINI L. and PULONE L.

Abstract (from CDS):

We present V,I deep CCD photometry for three fields of the dwarf galaxy in Sagittarius (Sgr), located at l=5.6°, b=-14.1°. One of the fields is centered on the globular cluster NGC 6715 (M54), which lies in one of the dense clumps of the Sgr galaxy. Comparing the CMD of Sgr with those of globular clusters which are believed to be kinematically associated with the dwarf galaxy (Da Costa & Armandroff, 1995AJ....109.2533D), we conclude that the stellar population of Sgr presents a spread in metallicity of -0.71≤[Fe/H]≤-1.58, and that the dominant population (≃10Gyr old) is extremely similar to the star content of the associated globular cluster Terzan 7. The estimated distance to Sgr is d≃24.55Kpc.

Abstract Copyright: ∼

Journal keyword(s): techniques: photometry - stars: HR-diagrams - stars: luminosity function - galaxies: irregular - galaxies: stellar content

VizieR on-line data: <Available at CDS (J/A+A/330/453): m54.dat sagit1.dat sagit2.dat>

Nomenclature: Catalogue: [MBC98a] M54 NNNN (Nos 1-7923), [MBC98a] Sgr1 NNNN (Nos 1-9154), [MBC98a] Sgr2 NNNN (Nos 1-6975).

Status at CDS : All or part of tables of objects will not be ingested in SIMBAD.

Simbad objects: 10

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Number of rows : 10
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 NGC 104 GlC 00 24 05.359 -72 04 53.20     4.09     ~ 4158 0
2 NGC 4147 GlC 12 10 06.149 +18 32 31.78   11.45 10.74     ~ 616 0
3 NGC 6101 GlC 16 25 48.12 -72 12 07.9           ~ 337 0
4 M 54 GlC 18 55 03.33 -30 28 47.5           ~ 1164 0
5 NAME SDG G 18 55 19.0 -30 32 43   4.5 3.6     ~ 2438 2
6 Cl Terzan 7 GlC 19 17 43.92 -34 39 27.8           ~ 460 0
7 Cl Arp 2 GlC 19 28 44.11 -30 21 20.3     12.41     ~ 384 0
8 M 55 GlC 19 39 59.71 -30 57 53.1     6.49     ~ 913 0
9 Cl Terzan 8 GlC 19 41 44.41 -33 59 58.1     11.54     ~ 357 0
10 M 2 GlC 21 33 27.02 -00 49 23.7     6.25     ~ 1114 1

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