2003AJ....125..197H

Query : 2003AJ....125..197H

2003AJ....125..197H - Astron. J., 125, 197-207 (2003/January-0)

CN abundance variations on the main sequence of 47 Tucanae.

HARBECK D., SMITH G.H. and GREBEL E.K.

Abstract (from CDS):

We report on a deep spectroscopic survey for star-to-star CN variations along the main sequence (MS) of the globular cluster 47 Tuc with ESO's Very Large Telescope. We find a significant bimodal distribution in the S(3839) index for main-sequence stars in the mass range ∼0.85 to 0.65 M☉, or from the main-sequence turnoff down to ∼2.5 mag below the main-sequence turnoff. An anticorrelation of CN and CH is evident on the MS. The result is discussed in the context of the ability of faint MS stars to alter their surface composition through internal evolutionary effects. We argue against internal stellar evolution as the only origin for the abundance spread in 47 Tuc; an external origin such as pollution seems to be more likely.

Abstract Copyright: ∼

Journal keyword(s): Galaxy: Globular Clusters: General - Galaxy: Globular Clusters: Individual: Name: 47 Tucanae - Stars: Abundances - Stars: Evolution - Stars: Formation

VizieR on-line data: <Available at CDS (J/AJ/125/197): table1.dat>

Nomenclature: Table 1: Cl* NGC 104 HSG NNNN N=111 among N≥6723.

Simbad objects: 116

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Number of rows : 116
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 Cl* NGC 104 HSG 2060 * 00 25 56.72 -72 00 53.8   18.591 18.047     ~ 2 0
3 Cl* NGC 104 HSG 1587 * 00 25 58.24 -72 01 54.5   18.527 17.967     ~ 2 0
4 Cl* NGC 104 HSG 1462 * 00 25 59.22 -72 02 07.5   18.648 18.137     ~ 2 0
5 Cl* NGC 104 HSG 3060 MS* 00 26 00.1067825910 -71 58 45.460323704   17.848 17.492   16.786 ~ 3 0
6 Cl* NGC 104 HSG 3769 MS* 00 26 00.4312161713 -71 57 01.721186337   18.634 18.265   17.535 ~ 3 0
7 Cl* NGC 104 HSG 3631 * 00 26 00.64 -71 57 23.4   20.305 19.497     ~ 2 0
8 Cl* NGC 104 HSG 2284 * 00 26 01.69 -72 00 26.3   20.586 19.827     ~ 2 0
9 Cl* NGC 104 HSG 3929 * 00 26 02.24 -71 56 40.3   20.039 19.297     ~ 2 0
10 Cl* NGC 104 HSG 1890 * 00 26 03.53 -72 01 16.1   18.254 17.727     ~ 1 0
11 Cl* NGC 104 HSG 341 * 00 26 03.55 -72 01 13.1   17.941 17.447     ~ 2 0
12 Cl* NGC 104 HSG 3701 MS* 00 26 04.1340331123 -71 57 12.207168703   19.763 19.246   18.375 ~ 3 0
13 Cl* NGC 104 HSG 977 * 00 26 04.52 -72 02 44.6   19.307 18.697     ~ 2 0
14 Cl* NGC 104 HSG 2186 * 00 26 04.69 -72 00 38.9   19.371 18.777     ~ 2 0
15 Cl* NGC 104 HSG 1833 * 00 26 04.95 -72 01 24.1   20.465 19.707     ~ 2 0
16 Cl* NGC 104 HSG 2629 MS* 00 26 05.2966268491 -71 59 41.051607660   18.564 18.181   17.458 ~ 3 0
17 Cl* NGC 104 HSG 90 * 00 26 05.54 -71 58 30.5   20.358 19.567     ~ 2 0
18 Cl* NGC 104 HSG 2738 MS* 00 26 05.5428151167 -71 59 28.544826702   20.678 19.993   19.020 ~ 3 0
19 Cl* NGC 104 HSG 596 * 00 26 05.55 -71 58 34.2   20.289 19.547     ~ 2 0
20 Cl* NGC 104 HSG 3532 MS* 00 26 05.8089180792 -71 57 36.441161280   17.778 17.422   16.716 ~ 3 0
21 Cl* NGC 104 HSG 3853 MS* 00 26 07.0511908368 -71 56 50.437016664   18.671 18.285   17.562 ~ 3 0
22 Cl* NGC 104 HSG 2379 MS* 00 26 09.3003673183 -72 00 15.026712602   18.85 18.467   17.708 ~ 3 0
23 Cl* NGC 104 HSG 2409 Ev* 00 26 09.3132993697 -72 00 11.374559067   17.638 17.223   16.462 ~ 3 0
24 Cl* NGC 104 HSG 2947 MS* 00 26 09.6403769404 -71 58 59.597560258   19.054 18.618   17.853 ~ 3 0
25 Cl* NGC 104 HSG 2556 * 00 26 09.91 -71 59 51.2   19.79 19.097     ~ 2 0
26 Cl* NGC 104 HSG 1152 * 00 26 10.13 -72 02 32.4   19.932 19.207     ~ 2 0
27 Cl* NGC 104 HSG 1992 * 00 26 10.19 -72 01 03.1   19.28 18.687     ~ 2 0
28 Cl* NGC 104 HSG 1675 * 00 26 10.83 -72 01 42.9   18.988 18.427     ~ 2 0
29 Cl* NGC 104 HSG 3456 * 00 26 10.89 -71 57 47.3   20.156 19.397     ~ 2 0
30 Cl* NGC 104 HSG 3371 Ev* 00 26 11.0715107904 -71 57 58.169252916   17.824 17.457   16.729 ~ 3 0
31 Cl* NGC 104 HSG 4115 MS* 00 26 11.3788224912 -71 56 12.540359544   18.404 18.045   17.330 ~ 3 0
32 Cl* NGC 104 HSG 3206 * 00 26 11.39 -71 58 22.5   20.093 19.417     ~ 2 0
33 Cl* NGC 104 HSG 3230 * 00 26 11.42 -71 58 19.6   19.637 18.977     ~ 2 0
34 Cl* NGC 104 HSG 4014 MS* 00 26 11.6336394483 -71 56 27.795196990   18.571 18.198   17.468 ~ 3 0
35 Cl* NGC 104 HSG 4188 * 00 26 12.11 -71 56 03.1   20.445 19.687     ~ 2 0
36 Cl* NGC 104 HSG 94 MS* 00 26 12.4893315870 -71 58 10.845353408   19.108 18.712   17.950 ~ 3 0
37 Cl* NGC 104 HSG 2821 MS* 00 26 12.5187042759 -71 59 15.642387009   19.713 19.190   18.355 ~ 3 0
38 Cl* NGC 104 HSG 4023 * 00 26 13.09 -71 56 26.5   20.254 19.482     ~ 2 0
39 Cl* NGC 104 HSG 5759 MS* 00 26 14.3932795854 -71 51 26.346613321   17.832 17.526   16.817 ~ 3 0
40 Cl* NGC 104 HSG 1304 MS* 00 26 15.3429147120 -71 50 29.028114780   18.061 17.743   17.030 ~ 3 0
41 Cl* NGC 104 HSG 1366 * 00 26 16.10 -72 02 15.3   21.138 20.247     ~ 1 0
42 Cl* NGC 104 HSG 4452 MS* 00 26 17.4599181804 -71 55 21.821039967   19.152 18.771   17.992 ~ 3 0
43 Cl* NGC 104 HSG 4465 MS* 00 26 17.7065243487 -71 55 19.954588721   19.07 18.647   17.888 ~ 3 0
44 Cl* NGC 104 HSG 5205 MS* 00 26 19.9510612737 -71 53 16.685193593   17.735 17.416   16.706 ~ 3 0
45 Cl* NGC 104 HSG 1173 MS* 00 26 20.2334176744 -71 52 12.695836906   18.176 17.853   17.145 ~ 3 0
46 Cl* NGC 104 HSG 5219 MS* 00 26 20.3226857488 -71 53 13.588726575   19.117 18.710   17.923 ~ 3 0
47 Cl* NGC 104 HSG 5261 * 00 26 21.88 -71 53 06.8   21.119 20.255     ~ 2 0
48 Cl* NGC 104 HSG 3942 * 00 26 23.93 -71 56 38.1   20.043 19.270     ~ 2 0
49 Cl* NGC 104 HSG 5299 MS* 00 26 23.9903580900 -71 53 00.433837519   19.821 19.317   18.425 ~ 3 0
50 Cl* NGC 104 HSG 3521 MS* 00 26 28.2875890467 -71 57 36.939478217   18.934 18.512   17.743 ~ 3 0
51 Cl* NGC 104 HSG 3343 MS* 00 26 28.3952776962 -71 58 02.376881015   19.089 18.689   17.924 ~ 3 0
52 Cl* NGC 104 HSG 3394 MS* 00 26 29.8142434604 -71 57 55.341422170   19.377 18.926   18.135 ~ 3 0
53 Cl* NGC 104 HSG 4019 * 00 26 30.36 -71 56 26.6   20.673 19.824     ~ 2 0
54 Cl* NGC 104 HSG 5653 MS* 00 26 30.7591959457 -71 51 47.804137252   18.608 18.261   17.535 ~ 3 0
55 Cl* NGC 104 HSG 5237 * 00 26 31.91 -71 53 09.5   19.999 19.255     ~ 2 0
56 Cl* NGC 104 HSG 3137 Ev* 00 26 31.9605604800 -71 58 32.803996800   17.613 17.242   16.508 ~ 3 0
57 Cl* NGC 104 HSG 6537 * 00 26 32.2499220504 -71 48 29.419666992   17.747 17.198     ~ 2 0
58 Cl* NGC 104 HSG 5950 * 00 26 33.32 -71 50 47.5   19.812 19.096     ~ 1 0
59 Cl* NGC 104 HSG 1329 MS* 00 26 33.5945985090 -71 50 10.954511941   18.86 18.490   17.725 ~ 3 0
60 Cl* NGC 104 HSG 4521 * 00 26 33.71 -71 55 12.0   19.896 19.202     ~ 2 0
61 Cl* NGC 104 HSG 4344 MS* 00 26 33.7390924728 -71 55 37.694157744   18.134 17.806   17.126 ~ 3 0
62 Cl* NGC 104 HSG 5665 Ev* 00 26 33.7986678864 -71 51 43.841052000   17.698 17.368   16.653 ~ 3 0
63 Cl* NGC 104 HSG 4421 MS* 00 26 34.1303907396 -71 55 26.007854444   19.233 18.812   18.037 ~ 3 0
64 Cl* NGC 104 HSG 3522 * 00 26 34.72 -71 57 36.9   20.58 19.826     ~ 2 0
65 Cl* NGC 104 HSG 3797 MS* 00 26 35.2201874886 -71 56 58.093932781   18.345 17.991   17.283 ~ 3 0
66 Cl* NGC 104 HSG 5545 MS* 00 26 35.3691592170 -71 52 11.639281899   19.274 18.842   18.055 ~ 3 0
67 Cl* NGC 104 HSG 5402 * 00 26 35.43 -71 52 38.6   18.987 18.377     ~ 2 0
68 Cl* NGC 104 HSG 3823 * 00 26 35.60 -71 56 54.8   18.737 18.140     ~ 2 0
69 Cl* NGC 104 HSG 5836 MS* 00 26 35.8517254644 -71 51 11.787139309   19.415 18.970   18.136 ~ 3 0
70 Cl* NGC 104 HSG 4554 * 00 26 36.1028935464 -71 55 06.428524152   17.667 16.996     ~ 2 0
71 Cl* NGC 104 HSG 5253 MS* 00 26 36.1467144127 -71 53 07.691397114   19.537 19.084   18.272 ~ 3 0
72 Cl* NGC 104 HSG 6220 MS* 00 26 39.7544903653 -71 49 43.009946732   19.228 18.754   17.963 ~ 3 0
73 Cl* NGC 104 HSG 6264 * 00 26 40.87 -71 49 33.8   20.628 19.871     ~ 2 0
74 Cl* NGC 104 HSG 4600 MS* 00 26 42.6303351936 -71 54 59.655873671   19.371 18.952   18.145 ~ 3 0
75 Cl* NGC 104 HSG 3872 MS* 00 26 42.9572807567 -71 56 47.620487075   18.878 18.468   17.720 ~ 3 0
76 Cl* NGC 104 HSG 806 MS* 00 26 43.1070708979 -71 56 15.364010185   19.921 19.414   18.527 ~ 3 0
77 Cl* NGC 104 HSG 5587 MS* 00 26 44.7721378512 -71 52 01.809704172   18.25 17.913   17.196 ~ 3 0
78 Cl* NGC 104 HSG 6648 MS* 00 26 45.6368556652 -71 48 00.000370852   19.775 19.321   18.424 ~ 3 0
79 Cl* NGC 104 HSG 4877 MS* 00 26 46.4202075958 -71 54 13.997863683   19.116 18.663   17.889 ~ 3 0
80 Cl* NGC 104 HSG 4707 MS* 00 26 46.8378033539 -71 54 42.950036967   18.529 18.201   17.485 ~ 3 0
81 Cl* NGC 104 HSG 4592 * 00 26 47.32 -71 55 00.6   20.005 19.273     ~ 2 0
82 Cl* NGC 104 HSG 6043 MS* 00 26 48.0720495204 -71 50 24.886572086   18.337 18.038   17.310 ~ 3 0
83 Cl* NGC 104 HSG 5154 MS* 00 26 48.2802354218 -71 53 26.116068134   18.938 18.564   17.804 ~ 3 0
84 Cl* NGC 104 HSG 6723 * 00 26 48.58 -71 47 39.9   19.779 19.086     ~ 2 0
85 Cl* NGC 104 HSG 5809 * 00 26 48.71 -71 51 16.9   19.967 19.243     ~ 2 0
86 Cl* NGC 104 HSG 6452 MS* 00 26 48.8357896243 -71 48 51.013478708   19.133 18.745   17.948 ~ 3 0
87 Cl* NGC 104 HSG 5049 Ev* 00 26 50.1899581800 -71 53 43.621141308   17.633 17.214   16.443 ~ 4 0
88 Cl* NGC 104 HSG 1351 * 00 26 50.58 -71 49 47.8   18.337 17.793     ~ 2 0
89 Cl* NGC 104 HSG 6380 * 00 26 50.93 -71 49 09.3   20.42 19.685     ~ 2 0
90 Cl* NGC 104 HSG 5214 * 00 26 51.50 -71 53 13.2   20.419 19.731     ~ 2 0
91 Cl* NGC 104 HSG 6047 Ev* 00 26 51.5895133920 -71 50 24.077099364   17.68 17.344   16.604 ~ 3 0
92 Cl* NGC 104 HSG 5231 * 00 26 51.88 -71 53 10.6   19.363 18.737     ~ 2 0
93 Cl* NGC 104 HSG 6248 * 00 26 52.04 -71 49 35.7   19.653 18.919     ~ 2 0
94 Cl* NGC 104 HSG 5547 * 00 26 52.68 -71 52 10.6   20.172 19.397     ~ 2 0
95 Cl* NGC 104 HSG 5942 MS* 00 26 52.8722596075 -71 50 48.655137489   19.883 19.341   18.444 ~ 3 0
96 Cl* NGC 104 HSG 4936 MS* 00 26 53.0768736724 -71 54 03.203310895   18.481 18.153   17.432 ~ 3 0
97 Cl* NGC 104 HSG 5146 * 00 26 54.38 -71 53 26.8   20.8 19.949     ~ 2 0
98 Cl* NGC 104 HSG 5381 MS* 00 26 54.8755696820 -71 52 42.795855167   19.723 19.247   18.388 ~ 3 0
99 Cl* NGC 104 HSG 4643 * 00 26 54.9310424688 -71 54 52.175779668   18.024 17.497     ~ 2 0
100 Cl* NGC 104 HSG 4298 MS* 00 26 54.9712536259 -71 55 44.260561159   19.03 18.643   17.888 ~ 3 0
101 Cl* NGC 104 HSG 1498 * 00 26 55.2290081856 -71 47 39.989954328   17.995 17.514     ~ 2 0
102 Cl* NGC 104 HSG 6591 MS* 00 26 55.5932715168 -71 48 15.009283044   17.978 17.695   16.978 ~ 3 0
103 Cl* NGC 104 HSG 5235 * 00 26 56.51 -71 53 09.8   20.688 19.847     ~ 2 0
104 Cl* NGC 104 HSG 4790 MS* 00 26 56.8890101251 -71 54 27.508228908   19.014 18.637   17.873 ~ 3 0
105 Cl* NGC 104 HSG 6455 MS* 00 26 58.6544891546 -71 48 50.138431449   18.475 18.153   17.405 ~ 3 0
106 Cl* NGC 104 HSG 5538 * 00 27 02.38 -71 52 12.8   18.894 18.317     ~ 2 0
107 Cl* NGC 104 HSG 6335 * 00 27 02.56 -71 49 16.8   19.906 19.207     ~ 2 0
108 Cl* NGC 104 HSG 5342 MS* 00 27 03.5682463368 -71 52 51.492493452   17.988 17.701   17.002 ~ 3 0
109 Cl* NGC 104 HSG 5188 MS* 00 27 04.0814311632 -71 53 18.809316852   17.884 17.585   16.880 ~ 3 0
110 Cl* NGC 104 HSG 6622 * 00 27 09.57 -71 48 04.8   22.112 21.893     ~ 2 0
111 Cl* NGC 104 HSG 6641 * 00 27 13.08 -71 48 00.7   20.014 19.275     ~ 2 0
112 Cl* NGC 104 HSG 5296 * 00 27 15.20 -71 52 58.7   19.753 19.077     ~ 2 0
113 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
114 NGC 5139 GlC 13 26 47.28 -47 28 46.1           ~ 3677 0
115 M 3 GlC 13 42 11.62 +28 22 38.2     6.39     ~ 2593 0
116 M 13 GlC 16 41 41.634 +36 27 40.75     5.8     ~ 2291 0

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