2006ApJ...645L..33F

Query : 2006ApJ...645L..33F

2006ApJ...645L..33F - Astrophys. J., 645, L33-L36 (2006/July-1)

On the iron content of NGC 1978 in the LMC: a metal-rich, chemically homogeneous cluster.

FERRARO F.R., MUCCIARELLI A., CARRETTA E. and ORIGLIA L.

Abstract (from CDS):

We present a detailed abundance analysis of giant stars in NGC 1978, a massive, intermediate-age stellar cluster in the Large Magellanic Cloud, characterized by a high ellipticity and suspected to have a metallicity spread. We analyzed 11 giants, all cluster members, by using high-resolution spectra acquired with UVES/FLAMES at the ESO Very Large Telescope. We find an iron content of [Fe/H] = -0.38 dex with very low σ[Fe/H]=0.07 dex dispersion, a mean heliocentric radial velocity vr=293.1±0.9 km/s, and a velocity dispersion σvr=3.1 km/s, thus excluding the presence of a significant metallicity, as well as velocity, spread within the cluster.

Abstract Copyright: ∼

Journal keyword(s): globular clusters: individual (NGC 1978) - Galaxies: Magellanic Clouds - Stars: Abundances - Techniques: Spectroscopic

Nomenclature: Table 1: Cl* NGC 1978 FMC NN N=11.

CDS comments: In introd. : NGC 1989 is a misprint for NGC 1898

Simbad objects: 26

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Number of rows : 26
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 1866 GlC 05 13 38.920 -65 27 52.75           ~ 437 0
4 NGC 1898 As* 05 16 45.380 -69 39 16.76   12.62 11.86     ~ 104 0
5 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
6 NGC 1978 GlC 05 28 45.330 -66 14 12.04   10.7 10.70     ~ 317 0
7 NGC 2005 Cl* 05 30 08.500 -69 45 14.42   12.30 11.57     ~ 103 0
8 NGC 2019 Cl* 05 31 56.48 -70 09 32.5   10.9 10.86     ~ 124 0
9 NGC 1989 Sy2 05 34 23.4127690968 -30 48 03.950125272   14.13   12.41   ~ 24 0
10 NGC 2203 Cl* 06 04 42.17 -75 26 15.8   12.80 11.29     ~ 54 0
11 NAME Hodge 11 GlC 06 14 22.92 -69 50 54.9   12.57 11.93     ~ 117 0
12 NGC 2257 Cl* 06 30 12.62 -64 19 40.0   13.24 12.62     ~ 228 0
13 NGC 5139 GlC 13 26 47.28 -47 28 46.1           ~ 3677 0
14 NAME ESO 121-SC 03 GlC ~ ~           ~ 7 0
15 Cl* NGC 1978 FMC 32 * ~ ~           ~ 1 0
16 Cl* NGC 1978 FMC 29 * ~ ~           ~ 1 0
17 Cl* NGC 1978 FMC 28 * ~ ~           ~ 1 0
18 Cl* NGC 1978 FMC 26 * ~ ~           ~ 1 0
19 Cl* NGC 1978 FMC 24 * ~ ~           ~ 1 0
20 Cl* NGC 1978 FMC 23 * ~ ~           ~ 1 0
21 Cl* NGC 1978 FMC 22 * ~ ~           ~ 1 0
22 Cl* NGC 1978 FMC 34 * ~ ~           ~ 1 0
23 Cl* NGC 1978 FMC 21 * ~ ~           ~ 1 0
24 Cl* NGC 1978 FMC 38 * ~ ~           ~ 1 0
25 Cl* NGC 1978 FMC 42 * ~ ~           ~ 1 0
26 NAME Local Group GrG ~ ~           ~ 9325 0

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