2012A&A...543A.117C


Query : 2012A&A...543A.117C

2012A&A...543A.117C - Astronomy and Astrophysics, volume 543A, 117-117 (2012/7-1)

Aluminum abundances of multiple stellar generations in the globular cluster NGC 1851.

CARRETTA E., D'ORAZI V., GRATTON R.G. and LUCATELLO S.

Abstract (from CDS):

We studied the distribution of aluminum abundances among red giants in the peculiar globular cluster NGC 1851. Aluminum abundances were derived from the strong doublet AlI 8772-8773Å measured on intermediate-resolution FLAMES spectra of 50 cluster stars acquired under the Gaia-ESO public survey. We coupled these abundances with previously derived abundances of O, Na, and Mg to fully characterize the interplay of the NeNa and MgAl cycles of H-burning at high temperature in the early stellar generation in NGC 1851. The stars in our sample show well-defined correlations between Al, Na and Si; Al is anticorrelated with O and Mg. The average value of the [Al/Fe] ratio steadily increases from the first generation stars to the second generation populations with intermediate and extremely modified composition. We confirm on a larger database the results recently obtained by us: the pattern of abundances of proton-capture elements implies a moderate production of Al in NGC 1851. We find evidence of a statistically significant positive correlation between Al and Ba abundances in the more metal-rich component of red giants in NGC 1851.

Abstract Copyright:

Journal keyword(s): stars: abundances - stars: atmospheres - stars: Population II - globular clusters: general - globular clusters: individual: NGC 1851

Simbad objects: 68

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Number of rows : 68
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 * bet Cas dS* 00 09 10.68518 +59 08 59.2120 2.73 2.61 2.27 1.97 1.77 F2III 513 0
2 2MASS J05132825-4010215 RG* 05 13 28.2684956952 -40 10 21.603129996   16.392 15.482     ~ 8 0
3 2MASS J05134185-4004416 RG* 05 13 41.8641026976 -40 04 41.741719428   17.819 16.994     ~ 7 0
4 2MASS J05134381-4001154 RG* 05 13 43.8220017144 -40 01 15.572289684   16.859 16.012     ~ 9 0
5 2MASS J05134739-4004097 RG* 05 13 47.4056358648 -40 04 09.840624600   17.019 16.090     ~ 8 0
6 2MASS J05134897-4001199 RG* 05 13 48.9851610000 -40 01 20.043796440   16.642 15.769     ~ 8 0
7 2MASS J05135094-3956082 RG* 05 13 50.9551602312 -39 56 08.300429304   17.659 16.863     ~ 6 0
8 2MASS J05135210-3957261 RG* 05 13 52.1075996232 -39 57 26.208193104   16.723 15.753     ~ 7 0
9 2MASS J05135289-4004051 RG* 05 13 52.9069609512 -40 04 05.336935428   17.537 16.699     ~ 7 0
10 2MASS J05135304-4001424 RG* 05 13 53.0456013888 -40 01 42.499351992   16.765 15.877     ~ 7 0
11 2MASS J05135346-3958450 RG* 05 13 53.4711096048 -39 58 45.186742128   17.048 16.204     ~ 7 0
12 2MASS J05135414-4003038 RG* 05 13 54.1524411288 -40 03 04.001232096   16.460 15.517     ~ 8 0
13 2MASS J05135598-4004534 RG* 05 13 55.9921128552 -40 04 53.569834932   16.765 15.814     ~ 8 0
14 2MASS J05135680-4001088 RG* 05 13 56.8229817336 -40 01 09.007409460   17.610 16.847     ~ 7 0
15 2MASS J05135714-4006315 RG* 05 13 57.1398310704 -40 06 31.762199520   17.002 16.120     ~ 7 0
16 2MASS J05135764-4004310 RG* 05 13 57.6528371784 -40 04 31.142084340   16.975 16.106     ~ 7 0
17 2MASS J05135862-3959242 RG* 05 13 58.6296053184 -39 59 24.343326204   17.075 16.238     ~ 7 0
18 2MASS J05135883-4003363 RG* 05 13 58.8426768312 -40 03 36.517068936   16.162 15.115     ~ 6 0
19 2MASS J05135903-4000265 RG* 05 13 59.0548073400 -40 00 26.698394772   17.660 16.839     ~ 7 0
20 2MASS J05140062-4000412 RG* 05 14 00.6423822888 -40 00 41.443383312   17.624 16.854     ~ 6 0
21 2MASS J05140175-4003572 RG* 05 14 01.7637322800 -40 03 57.401466984   17.499 16.685     ~ 7 0
22 2MASS J05140233-4001525 RG* 05 14 02.3388968400 -40 01 52.741619796   16.727 15.837     ~ 6 0
23 2MASS J05140259-4000220 RG* 05 14 02.6032637712 -40 00 22.269161700   16.549 15.653     ~ 8 0
24 2MASS J05140442-4001258 RG* 05 14 04.4322508684 -40 01 26.080179763   16.114 15.156     ~ 8 0
25 2MASS J05140456-4005137 RG* 05 14 04.5688045968 -40 05 13.853465880   16.820 15.945     ~ 6 0
26 2MASS J05140459-4003495 RG* 05 14 04.6054863360 -40 03 49.706541648   17.040 16.200     ~ 7 0
27 2MASS J05140473-4007017 RG* 05 14 04.7383450728 -40 07 01.938207576   17.339 16.521     ~ 9 0
28 2MASS J05140562-4000035 RG* 05 14 05.6316196848 -40 00 03.705776748   17.047 16.228     ~ 7 0
29 2MASS J05140618-3956432 RG* 05 14 06.1881884544 -39 56 43.348468668   16.115 15.144     ~ 6 0
30 2MASS J05140647-4005417 RG* 05 14 06.4785306312 -40 05 41.894636424   17.344 16.515     ~ 7 0
31 NGC 1851 GlC 05 14 06.76 -40 02 47.6           ~ 1361 0
32 Cl* NGC 1851 PML 37 * 05 14 07.3196794272 -40 01 30.337909716   16.414 15.533     ~ 8 0
33 2MASS J05140741-4004554 RG* 05 14 07.4204336144 -40 04 55.552128642   16.693 15.806     ~ 5 0
34 2MASS J05140849-4005544 RG* 05 14 08.5054114416 -40 05 54.518739000   16.746 15.835     ~ 7 0
35 2MASS J05141002-3959035 RG* 05 14 10.0378784568 -39 59 03.646563216   17.316 16.521     ~ 8 0
36 2MASS J05141052-3958095 RG* 05 14 10.5411040368 -39 58 09.612679404   16.341 15.437     ~ 7 0
37 2MASS J05141133-4004092 RG* 05 14 11.3377298352 -40 04 09.403235040   17.293 16.472     ~ 9 0
38 2MASS J05141170-3959544 RG* 05 14 11.7146258688 -39 59 54.557496024   16.981 16.155     ~ 8 0
39 2MASS J05141207-4002200 RG* 05 14 12.0806469600 -40 02 20.197534632   15.962 14.971     ~ 6 0
40 Cl* NGC 1851 PML 21 * 05 14 12.8595964592 -40 03 10.354409999   16.998 16.158     ~ 8 0
41 2MASS J05141411-4003126 RG* 05 14 14.1216907992 -40 03 12.809317032   16.767 15.893     ~ 7 0
42 2MASS J05141493-4006156 RG* 05 14 14.9505786672 -40 06 15.537148452   16.705 15.784     ~ 8 0
43 2MASS J05141565-4000058 RG* 05 14 15.6664890264 -40 00 05.923971828   17.096 16.245     ~ 8 0
44 2MASS J05141582-4003015 RG* 05 14 15.8426891808 -40 03 01.620957384   16.947 16.109     ~ 7 0
45 2MASS J05141752-4003327 RG* 05 14 17.5410668328 -40 03 32.715958104   17.413 16.548     ~ 6 0
46 2MASS J05141757-4003107 RG* 05 14 17.57688 -40 03 10.7352   17.774 17.031     ~ 6 0
47 2MASS J05141947-4003237 RG* 05 14 19.4747088432 -40 03 23.832580140   16.985 16.115     ~ 7 0
48 2MASS J05141947-4000076 RG* 05 14 19.4879142504 -40 00 07.680301812   16.04 14.95     ~ 8 0
49 2MASS J05141978-4006447 RG* 05 14 19.7953700400 -40 06 44.708545296   17.281 16.429     ~ 9 0
50 2MASS J05142052-4003113 RG* 05 14 20.5324470888 -40 03 11.346102720   17.569 16.761     ~ 6 0
51 2MASS J05142060-3955537 RG* 05 14 20.6172747936 -39 55 53.836137660   16.937 16.136     ~ 7 0
52 2MASS J05142070-4004195 RG* 05 14 20.7100471848 -40 04 19.521257232   17.344 16.493     ~ 9 0
53 2MASS J05142076-4005189 RG* 05 14 20.7814259808 -40 05 18.936082500   16.762 15.878     ~ 7 0
54 2MASS J05142311-4002162 RG* 05 14 23.1189363120 -40 02 16.241241876   17.724 16.917     ~ 7 0
55 2MASS J05142479-4002226 RG* 05 14 24.8099047416 -40 02 22.697967552   16.813 15.874     ~ 8 0
56 2MASS J05142633-4001480 RG* 05 14 26.3375012592 -40 01 48.173386548   17.618 16.804     ~ 7 0
57 2MASS J05142851-4005249 RG* 05 14 28.5205994664 -40 05 24.782989344   17.123 16.223     ~ 7 0
58 2MASS J05143273-4001532 RG* 05 14 32.7513849072 -40 01 53.202273096   17.587 16.801     ~ 5 0
59 2MASS J05143530-4005355 RG* 05 14 35.3165530032 -40 05 35.494857672   16.530 15.572     ~ 6 0
60 2MASS J05143598-4005532 RG* 05 14 35.9989606416 -40 05 53.048460912   17.512 16.680     ~ 8 0
61 2MASS J05144867-4009009 RG* 05 14 48.6785450328 -40 09 00.913806036   17.156 16.242     ~ 7 0
62 [CLG2011] 51311 RG* 05 15 00.8731648008 -40 04 41.764595232   16.706 15.758     ~ 6 0
63 NGC 2808 GlC 09 12 03.10 -64 51 48.6           ~ 1364 0
64 * mu. Leo PM* 09 52 45.8165435 +26 00 25.031882 6.50 5.10 3.88 2.97 2.39 K2IIIbCN1Ca1 432 0
65 M 4 GlC 16 23 35.22 -26 31 32.7           ~ 1784 0
66 NGC 6397 GlC 17 40 42.09 -53 40 27.6     5.17     ~ 1911 0
67 M 22 GlC 18 36 23.94 -23 54 17.1           ~ 1320 0
68 NGC 6752 GlC 19 10 52.11 -59 59 04.4           ~ 1927 0

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2023.01.29-19:51:09

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