1999AJ....117.2428C

Query : 1999AJ....117.2428C

1999AJ....117.2428C - Astron. J., 117, 2428-2433 (1999/May-0)

The spectra of main-sequence stars in galactic globular clusters. I. CH and CN bands in M13.

COHEN J.G.

Abstract (from CDS):

Spectra with a high signal-to-noise ratio of 50 stars that are just below the main-sequence turnoff and are members of M13 are presented. They yield indices for the strength of the CH and the ultraviolet CN band. There is no evidence for a variation in the strength of either feature from star to star in this intermediate-metallicity Galactic globular cluster and, thus, no evidence for primordial variations in the abundance of C and N in M13. This supports the hypothesis that abundance variations found among the light elements in the evolved stars of M13 and commonly seen on the giant and subgiant branches of globular clusters of comparable metallicity are due primarily or entirely to mixing within a fraction of individual stars as they evolve.

Abstract Copyright: ∼

Journal keyword(s): Galaxy: Globular Clusters: General - Galaxy: Globular Clusters: Individual: Messier Number: M13 - Stars: Evolution

Nomenclature: Table 1: [C99] M13ms JHHMMSSs+DDMMSS N=50.

CDS comments: T.1: [C99] M13ms J1641942+362438 = [C99] M13ms J1642342+362438 in SIMBAD

Simbad objects: 54

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Number of rows : 54
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 [C99] M13ms J1640581+362618 * 16 40 58.1 +36 26 18           ~ 1 0
3 [C99] M13ms J1641001+361937 * 16 41 00.1 +36 19 37           ~ 1 0
4 [C99] M13ms J1641010+362529 * 16 41 01.0 +36 25 29           ~ 1 0
5 [C99] M13ms J1641012+362017 * 16 41 01.2 +36 20 17           ~ 1 0
6 [C99] M13ms J1641018+362821 * 16 41 01.8 +36 28 21           ~ 1 0
7 [C99] M13ms J1641019+362403 * 16 41 01.9 +36 24 03           ~ 1 0
8 [C99] M13ms J1641022+362121 * 16 41 02.2 +36 21 21           ~ 1 0
9 [C99] M13ms J1641023+361953 * 16 41 02.3 +36 19 53           ~ 1 0
10 [C99] M13ms J1641028+362705 * 16 41 02.8 +36 27 05           ~ 1 0
11 [C99] M13ms J1641030+362529 * 16 41 03.0 +36 25 29           ~ 1 0
12 [C99] M13ms J1641031+362028 * 16 41 03.1 +36 20 28           ~ 1 0
13 [C99] M13ms J1641043+363218 * 16 41 04.3 +36 32 18           ~ 1 0
14 [C99] M13ms J1641044+361836 * 16 41 04.4 +36 18 36           ~ 1 0
15 [C99] M13ms J1641050+362454 * 16 41 05.0 +36 24 54           ~ 1 0
16 [C99] M13ms J1641055+361909 * 16 41 05.5 +36 19 09           ~ 1 0
17 [C99] M13ms J1641055+363041 * 16 41 05.5 +36 30 41           ~ 1 0
18 [C99] M13ms J1641056+362724 * 16 41 05.6 +36 27 24           ~ 1 0
19 [C99] M13ms J1641058+362332 * 16 41 05.8 +36 23 32           ~ 1 0
20 [C99] M13ms J1641059+363000 * 16 41 05.9 +36 30 00           ~ 1 0
21 [C99] M13ms J1641059+363050 * 16 41 05.9 +36 30 50           ~ 1 0
22 [C99] M13ms J1641063+362732 * 16 41 06.3 +36 27 32           ~ 1 0
23 [C99] M13ms J1641064+362508 * 16 41 06.4 +36 25 08           ~ 1 0
24 [C99] M13ms J1641065+362340 * 16 41 06.5 +36 23 40           ~ 1 0
25 [C99] M13ms J1641068+362224 * 16 41 06.8 +36 22 24           ~ 1 0
26 [C99] M13ms J1641068+362545 * 16 41 06.8 +36 25 45           ~ 1 0
27 [C99] M13ms J1641070+362251 * 16 41 07.0 +36 22 51           ~ 1 0
28 [C99] M13ms J1641071+362431 * 16 41 07.1 +36 24 31           ~ 1 0
29 [C99] M13ms J1641072+362756 * 16 41 07.2 +36 27 56           ~ 1 0
30 [C99] M13ms J1641076+362138 * 16 41 07.6 +36 21 38           ~ 1 0
31 [C99] M13ms J1641076+362151 * 16 41 07.6 +36 21 51           ~ 1 0
32 [C99] M13ms J1641077+362628 * 16 41 07.7 +36 26 28           ~ 1 0
33 [C99] M13ms J1641077+363011 * 16 41 07.7 +36 30 11           ~ 1 0
34 [C99] M13ms J1641078+362746 * 16 41 07.8 +36 27 46           ~ 1 0
35 [C99] M13ms J1641079+362413 * 16 41 07.9 +36 24 13           ~ 1 0
36 [C99] M13ms J1641079+362645 * 16 41 07.9 +36 26 45           ~ 1 0
37 [C99] M13ms J1641080+362324 * 16 41 08.0 +36 23 24           ~ 1 0
38 Cl* NGC 6205 BAUM 26 * 16 41 08.3479803744 +36 29 43.508777892   18.28 17.99     ~ 4 0
39 [C99] M13ms J1641085+362317 * 16 41 08.5 +36 23 17           ~ 1 0
40 [C99] M13ms J1641087+363124 * 16 41 08.7 +36 31 24           ~ 1 0
41 [C99] M13ms J1641099+362158 * 16 41 09.9 +36 21 58           ~ 1 0
42 [C99] M13ms J1641099+363027 * 16 41 09.9 +36 30 27           ~ 1 0
43 [C99] M13ms J1641101+363112 * 16 41 10.1 +36 31 12           ~ 1 0
44 [C99] M13ms J1641105+363058 * 16 41 10.5 +36 30 58           ~ 1 0
45 [C99] M13ms J1641107+363152 * 16 41 10.7 +36 31 52           ~ 1 0
46 [C99] M13ms J1641110+362905 * 16 41 10.9409476896 +36 29 05.474759604           ~ 1 0
47 [C99] M13ms J1641120+361926 * 16 41 12.0 +36 19 26           ~ 1 0
48 [C99] M13ms J1641120+363137 * 16 41 12.0 +36 31 37           ~ 1 0
49 [C99] M13ms J1641129+363226 * 16 41 12.9 +36 32 26           ~ 1 0
50 [C99] M13ms J1641148+362833 * 16 41 14.8 +36 28 33           ~ 1 0
51 M 13 GlC 16 41 41.634 +36 27 40.75     5.8     ~ 2291 0
52 [C99] M13ms J1642342+362438 * 16 42 34.2 +36 24 38           ~ 1 0
53 NGC 6397 GlC 17 40 42.09 -53 40 27.6     5.17     ~ 2103 0
54 NGC 6752 GlC 19 10 52.11 -59 59 04.4           ~ 2121 0

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