2004A&A...427..825J


C.D.S. - SIMBAD4 rel 1.7 - 2021.03.07CET03:08:46

2004A&A...427..825J - Astronomy and Astrophysics, volume 427, 825-838 (2004/12-1)

Heavy elements and chemical enrichment in globular clusters.

JAMES G., FRANCOIS P., BONIFACIO P., CARRETTA E., GRATTON R.G. and SPITE F.

Abstract (from CDS):

High resolution (R>40000) and high S/N spectra have been acquired with UVES on the VLT-Kueyen (Paranal Observatory, ESO Chile) for several main sequence turnoff stars (V∼17mag) and subgiants at the base of the Red Giant Branch (V∼16mag) in three globular clusters (NGC 6397, NGC 6752 and 47 Tuc/NGC 104) at different metallicities (respectively [Fe/H]≃-2.0; -1.5; -0.7). Spectra for a sample of 25 field halo subdwarves have also been taken with equal resolution, but higher S/N. These data have been used to determine the abundances of several neutron-capture elements in these three clusters: strontium, yttrium, barium and europium. This is the first abundance determination of these heavy elements for such unevolved stars in these three globular clusters. These values, together with the [Ba/Eu] and [Sr/Ba] abundance ratios, have been used to test the self-enrichment scenario. A comparison is done with field halo stars and other well known Galactic globular clusters in which heavy elements have already been measured in the past, at least in bright giants (V>11-12mag). Our results show clearly that globular clusters have been uniformly enriched by r- and s-process syntheses, and that most of them seem to follow exactly the same abundance patterns as field halo stars, which discards the ``classical'' self-enrichment scenario for the origin of metallicities and heavy elements in globular clusters.

Abstract Copyright:

Journal keyword(s): stars: abundances - Galaxy: globular clusters: individual: 47 Tuc, NGC 6752, NGC 6397 - Galaxy: evolution - Galaxy: globular clusters: general - stars: abundances

Simbad objects: 42

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Number of rows : 42

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 NGC 104 GlC 00 24 05.359 -72 04 53.20   5.78 4.09     ~ 3619 0
2 NGC 288 GlC 00 52 45.24 -26 34 57.4   10 8.13     ~ 944 0
3 NGC 362 GlC 01 03 14.26 -70 50 55.6     6.58     ~ 966 0
4 CD-35 360 PM* 01 04 06.1285487163 -34 40 28.935563742   11.01 10.25     G8 58 0
5 BPS CS 31082-0001 Pe* 01 29 31.1311330115 -16 00 45.496485322 12.527 12.427 11.642 11.189 10.713 CEMP 250 0
6 HD 10607 PM* 01 41 14.6904205826 -67 40 37.187012023   8.87 8.32     G0Vm-2.25 82 0
7 HD 29907 SB* 04 38 22.4006754245 -65 24 57.599417729   10.52 9.91     F8V 89 0
8 HD 31128 PM* 04 52 09.9097489102 -27 03 50.940327190   9.55 9.14     F3/5Vw 124 0
9 M 79 GlC 05 24 10.59 -24 31 27.3   9.21 8.16     ~ 730 0
10 HD 108177 PM* 12 25 34.9568983381 +01 17 02.259993860 9.87 10.09 9.66 9.21 8.89 F0V 236 0
11 HD 116064 Pe* 13 21 43.7823913103 -39 18 39.998476883   9.26 8.81     F9IV-Vm-5 125 0
12 M 3 GlC 13 42 11.62 +28 22 38.2     6.39     ~ 2298 0
13 HD 120559 PM* 13 51 40.3897554726 -57 26 08.293465228 8.679 8.647 7.982 7.605 7.217 G7VFe-1.4CH-1 142 0
14 HD 121004 PM* 13 53 58.1163515488 -46 32 19.526169178   10.112 9.522     G2V 132 0
15 HD 126681 PM* 14 27 24.9096361739 -18 24 40.457119166   9.939 9.535     G3V 170 0
16 HD 132475 PM* 14 59 49.7649807130 -22 00 45.814964574 8.98 9.11 8.55     F5/6V 229 1
17 HD 134169 SB* 15 08 18.0562462154 +03 55 50.107808860 8.14 8.22 7.70     F7V 200 0
18 HD 134440 PM* 15 10 12.9678041572 -16 27 46.510775897 10.69 10.217 9.426 8.913 8.441 K2V 260 0
19 HD 134439 PM* 15 10 13.0874231858 -16 22 45.866399625 10.03 9.837 9.066 8.604 8.160 sd:K1Fe-1 304 0
20 M 5 GlC 15 18 33.22 +02 04 51.7   7.34 5.95     ~ 1806 0
21 HD 140283 Pe* 15 43 03.0967798658 -10 56 00.595803430 7.508 7.711 7.212 6.63 8.21 F9VkA5mA1 871 0
22 HD 145417 PM* 16 13 48.5584718157 -57 34 13.843908786 8.663 8.365 7.540 7.054 6.588 K3VFe-1.7 153 0
23 M 4 GlC 16 23 35.22 -26 31 32.7           ~ 1704 0
24 M 13 GlC 16 41 41.634 +36 27 40.75     5.8     ~ 2036 0
25 NGC 6293 GlC 17 10 10.42 -26 34 54.2   9.96 9.02     ~ 248 0
26 M 92 GlC 17 17 07.39 +43 08 09.4     6.52     ~ 1934 0
27 HD 159482 PM* 17 34 43.0846515269 +06 00 51.750931202   8.95   8.0   G0V 148 0
28 NGC 6397 GlC 17 40 42.09 -53 40 27.6   7.39 5.17     ~ 1822 1
29 NGC 6541 GlC 18 08 02.36 -43 42 53.6   8.06 7.32     ~ 332 1
30 BD+05 3640 PM* 18 12 21.8775881607 +05 24 04.403971434   11.16   9.9   G8 78 0
31 HD 166913 PM* 18 16 25.6833261555 -59 24 11.241154880   8.66 8.23     F5/7Vw 124 0
32 NGC 6752 GlC 19 10 52.11 -59 59 04.4   6.96 6.28     ~ 1835 0
33 HD 181743 PM* 19 23 42.7454549059 -45 04 56.915607302   10.13 9.71     F4 102 0
34 M 71 GlC 19 53 46.49 +18 46 45.1   7.91 6.1     ~ 1038 0
35 HD 188510 PM* 19 55 09.6783577203 +10 44 27.395091177 9.30 9.41   8.5   G5V: 238 0
36 HD 189558 PM* 20 01 00.2452564415 -12 15 20.355884232   8.27 7.72     F8/G2V 174 1
37 HD 193901 PM* 20 23 35.8472360557 -21 22 14.228814044 9.08 9.22 8.67 8.17 7.87 F7V 261 0
38 HD 194598 PM* 20 26 11.9185966774 +09 27 00.429262518 8.62 8.82 8.34 7.90 7.56 F8 291 0
39 HD 204155 PM* 21 26 42.9051661431 +05 26 29.899070605   9.03   8.1   F7V 121 0
40 M 15 GlC 21 29 58.33 +12 10 01.2   3       ~ 2943 0
41 HD 205650 PM* 21 37 26.0309417494 -27 38 06.697112156   9.59 9.00     F6V 98 0
42 BPS CS 22892-0052 Pe* 22 17 01.6558480594 -16 39 27.051900047   14.03 13.20 13.06 12.19 KIIvw 418 0

    Equat.    Gal    SGal    Ecl

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2021.03.07-03:08:46

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