2013ApJ...764L...7S

Query : 2013ApJ...764L...7S

2013ApJ...764L...7S - Astrophys. J., 764, L7 (2013/February-2)

Star-to-star iron abundance variations in red giant branch stars in the galactic globular cluster NGC 3201.

SIMMERER J., IVANS I.I., FILLER D., FRANCOIS P., CHARBONNEL C., MONIER R. and JAMES G.

Abstract (from CDS):

We present the metallicity as traced by the abundance of iron in the retrograde globular cluster NGC 3201, measured from high-resolution, high signal-to-noise spectra of 24 red giant branch stars. A spectroscopic analysis reveals a spread in [Fe/H] in the cluster stars at least as large as 0.4 dex. Star-to-star metallicity variations are supported both through photometry and through a detailed examination of spectra. We find no correlation between iron abundance and distance from the cluster core, as might be inferred from recent photometric studies. NGC 3201 is the lowest mass halo cluster to date to contain stars with significantly different [Fe/H] values.

Abstract Copyright: ∼

Journal keyword(s): Galaxy: abundances - Galaxy: evolution - globular clusters: general - globular clusters: individual: NGC 3201 - stars: abundances - stars: Population II - techniques: spectroscopic

Simbad objects: 30

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Number of rows : 30
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 1851 GlC 05 14 06.76 -40 02 47.6           ~ 1529 0
2 Cl* NGC 3201 CWFD 3-63 RG* 10 17 14.0374663224 -46 24 45.277392204   14.923 13.855   12.42 ~ 10 0
3 Cl* NGC 3201 CWFD 3-89 RG* 10 17 20.3099286288 -46 23 09.574137312   15.02 13.87   12.56 ~ 8 0
4 Cl* NGC 3201 CWFD 3-91 RG* 10 17 20.6356909512 -46 20 07.848252312   14.956 13.834   12.41 ~ 11 0
5 Cl* NGC 3201 CWFD 3-105 * 10 17 22.50 -46 25 12.6   15.1 13.94   12.59 ~ 5 0
6 Cl* NGC 3201 CWFD 3-124 RG* 10 17 26.4425190552 -46 24 50.496358788   14.209 12.911   11.32 ~ 14 0
7 2MASS J10172684-4625446 RG* 10 17 26.8437706732 -46 25 44.585314677   14.20 12.843     ~ 20 0
8 2MASS J10172697-4625524 RG* 10 17 26.9759756928 -46 25 52.463455608   14.719 13.580   12.13 ~ 10 0
9 Cl* NGC 3201 CWFD 3-181 HB* 10 17 33.0339088672 -46 24 45.429083717   14.96 13.89   12.58 ~ 9 0
10 Cl* NGC 3201 CWFD 3-200 * 10 17 34.7863112472 -46 23 49.892678232   14.15 12.79   11.30 ~ 5 0
11 Cl* NGC 3201 CWFD 3-222 * 10 17 36.7448822520 -46 25 32.686404508   13.440 12.361 12.310 11.15 ~ 7 0
12 NGC 3201 GlC 10 17 36.82 -46 24 44.9           ~ 1001 0
13 Cl* NGC 3201 CWFD 3-231 * 10 17 37.56 -46 24 04.7   14.71 13.52   12.18 ~ 5 0
14 Cl* NGC 3201 CWFD 3-240 * 10 17 38.13 -46 25 40.1   14.99 13.91   12.59 ~ 5 0
15 Cl* NGC 3201 CWFD 3-244 * 10 17 38.3491580104 -46 24 08.659746987   14.99 13.77   12.38 ~ 5 0
16 Cl* NGC 3201 CWFD 3-249 RG* 10 17 38.5120303108 -46 25 37.465842546   14.23 12.99   11.54 ~ 9 0
17 2MASS J10173891-4624023 RG* 10 17 38.9098347864 -46 24 02.311058556   14.219 13.015     ~ 8 0
18 Cl* NGC 3201 CWFD 3-277 RG* 10 17 40.7596542816 -46 24 44.845648560   14.808 13.657   12.18 ~ 15 0
19 Cl* NGC 3201 CWFD 3-279 RG* 10 17 41.0024096592 -46 23 43.744122240   14.565 13.378   11.89 ~ 14 0
20 Cl* NGC 3201 CWFD 3-303 RG* 10 17 42.9293682192 -46 22 48.290307276   14.744 13.601   12.20 ~ 15 0
21 Cl* NGC 3201 CWFD 3-308 RG* 10 17 43.3023331200 -46 24 38.894769504   14.910 13.783   12.37 ~ 14 0
22 NGC 3201 4507 * 10 17 44.2111693608 -46 25 26.560789968   14.14 12.71   11.10 ~ 14 0
23 Cl* NGC 3201 CWFD 3-325 RG* 10 17 45.7642846776 -46 28 24.167478684   14.79 13.540     ~ 9 0
24 NGC 3201 3414 RG* 10 17 47.4780685512 -46 23 53.806005564   14.256 12.993   11.47 ~ 21 0
25 Cl* NGC 3201 CWFD 3-344 RG* 10 17 49.0629025776 -46 24 58.608727704   14.994 13.829   12.41 ~ 12 0
26 Cl* NGC 3201 CWFD 3-374 RG* 10 18 00.1161698184 -46 31 09.995222388   15.07 13.64   12.09 ~ 8 0
27 NGC 5139 GlC 13 26 47.28 -47 28 46.1           ~ 3677 0
28 * alf Boo RG* 14 15 39.67207 +19 10 56.6730 2.46 1.18 -0.05 -1.03 -1.68 K1.5IIIFe-0.5 2417 1
29 M 22 GlC 18 36 23.94 -23 54 17.1           ~ 1459 0
30 M 54 GlC 18 55 03.33 -30 28 47.5           ~ 1164 0

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