2004AJ....127..925S

Query : 2004AJ....127..925S

2004AJ....127..925S - Astron. J., 127, 925-937 (2004/February-0)

An infrared spectroscopic study of eight galactic globular clusters.

STEPHENS A.W. and FROGEL J.A.

Abstract (from CDS):

We have obtained medium-resolution infrared K-band spectra of 44 giants in seven heavily reddened clusters in the Galactic bulge, as well as 12 giants in ω Centauri. We measure the equivalent widths of the Na doublet, the Ca triplet, and the CO band head, and then apply the new technique of Frogel et al. to determine the metallicity of each star. Averaging these values, we estimate the metallicity for each cluster and compare our new [Fe/H] values with previous determinations from the literature. Our estimates for each cluster are NGC 6256 (-1.35), NGC 6539 (-0.79), HP 1 (-1.30), Liller 1 (-0.36), Palomar 6 (-0.52), Terzan 2 (-0.87), and Terzan 4 (-1.62). We briefly discuss differences between the various [Fe/H] scales on which it was possible to base our calibration, which is found to be the largest uncertainty in using this technique to determine metallicities.

Abstract Copyright: ∼

Journal keyword(s): globular clusters: individual (NGC 6256) - globular clusters: individual (NGC 6539) - Galaxy: Globular Clusters: Individual: Alphanumeric: HP 1 - Galaxy: Globular Clusters: Individual: Name: Liller 1 - Galaxy: Globular Clusters: Individual: Name: Palomar 6 - globular clusters: individual (Terzan 2) - globular clusters: individual (Terzan 4) - Galaxy: Globular Clusters: Individual: Name: ω Centauri

Nomenclature: Table 3, Fig.1: Cl* NGC 6256 SF NNN (Nos 51, 93, 95, 162), Cl* NGC 6256 SF A (No. B). Table 3, Fig.2: Cl* NGC 6539 SF N (Nos 1-4). Table 3, Fig.3: Cl* Haute-Provence 1 SF NNN (Nos 46, 57, 191, 435), Cl* Haute-Provence 1 SF A (Nos A-B). Table 3, Fig.4: Cl* Palomar 6 SF NNN (Nos 1-5, 11, 14). Table 3, Fig.5: Cl* Terzan 4 SF NNN N=7 among (Nos 185-474).

Simbad objects: 41

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Number of rows : 41
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 AP J13254633-4725595 RB? 13 25 46.3328043792 -47 25 59.677976460   14.45 12.74   10.874 S 20 0
2 NGC 5139 270 RG* 13 26 00.4100199432 -47 34 30.845140500 15.29 13.84 12.55   10.907 ~ 31 0
3 2MASS J13260392-4726537 RG* 13 26 03.9188610144 -47 26 53.646468036 16.08 14.310 12.946     ~ 19 0
4 NGC 5139 201 RG* 13 26 24.9957849312 -47 27 06.449465988   13.961 12.262     S 30 0
5 NGC 5139 513 * 13 26 28.8186051816 -47 25 23.503238364   14.570 12.900   11.005 S 25 0
6 2MASS J13263483-4734110 RG* 13 26 34.8426950352 -47 34 11.125321320 16.056 14.039 12.249 11.306 10.498 ~ 32 0
7 NGC 5139 GlC 13 26 47.28 -47 28 46.1           ~ 3427 0
8 NGC 5139 84 RG* 13 26 55.0638382872 -47 22 27.179341824 15.46 13.44 11.93   10.077 ~ 37 0
9 2MASS J13272355-4728072 RG* 13 27 23.5657140960 -47 28 07.200070536 15.68 13.93 12.17   10.226 ~ 32 0
10 NGC 5139 219 RG* 13 28 13.5721791960 -47 24 23.564480436   13.802 12.165 11.825   ~ 39 0
11 M 13 GlC 16 41 41.634 +36 27 40.75     5.8     ~ 2193 0
12 NGC 6256 GlC 16 59 32.68 -37 07 17.1           ~ 153 0
13 M 92 GlC 17 17 07.39 +43 08 09.4     6.52     ~ 2116 0
14 NGC 6356 GlC 17 23 34.99 -17 48 46.9   10.01 7.42     ~ 350 1
15 ESO 454-29 GlC 17 27 33.24 -30 48 07.8           ~ 251 0
16 GCl 66.1 GlC 17 30 38.90 -31 35 44.0           ~ 117 0
17 ESO 455-11 GlC 17 31 05.20 -29 58 54.0           ~ 169 0
18 Liller 1 Cl* 17 33 24.50 -33 23 20.0           ~ 263 0
19 ESO 520-21 GlC 17 43 42.20 -26 13 21.0           ~ 178 0
20 NGC 6528 GlC 18 04 49.61 -30 03 20.8   12.12 10.65     ~ 524 0
21 NGC 6539 GlC 18 04 49.74 -07 35 09.1           ~ 225 0
22 NGC 6752 GlC 19 10 52.11 -59 59 04.4           ~ 2001 0
23 M 15 GlC 21 29 58.33 +12 10 01.2           ~ 3140 0
24 Cl* Terzan 2 KFT 3 * ~ ~           ~ 2 0
25 NGC 5139 425 * ~ ~   14.37 12.68     S 15 0
26 Cl* Terzan 2 KFT 2 * ~ ~           ~ 2 0
27 Cl* Terzan 2 KFT 1 * ~ ~           ~ 2 0
28 [FKT95] 299 * ~ ~           ~ 2 0
29 [FKT95] 166 * ~ ~           ~ 2 0
30 [FKT95] 162 * ~ ~           ~ 2 0
31 [FKT95] 160 * ~ ~           ~ 1 0
32 [FKT95] 158 * ~ ~           ~ 2 0
33 [FKT95] 157 * ~ ~           ~ 2 0
34 [FKT95] 7 * ~ ~           ~ 2 0
35 [FKT95] 6 * ~ ~           ~ 2 0
36 Cl* NGC 5139 MAR 164 * ~ ~   13.84 11.97     ~ 3 0
37 Cl* Terzan 2 KFT 8 * ~ ~           ~ 2 0
38 Cl* NGC 5139 MAR 162 * ~ ~   13.32 11.73     ~ 3 0
39 Cl* Terzan 2 KFT 7 * ~ ~           ~ 2 0
40 Cl* Terzan 2 KFT 5 * ~ ~           ~ 2 0
41 Cl* Terzan 2 KFT 4 * ~ ~           ~ 2 0

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