2002A&A...383..491T


C.D.S. - SIMBAD4 rel 1.7 - 2021.04.13CEST16:26:30

2002A&A...383..491T - Astronomy and Astrophysics, volume 383, 491-501 (2002/2-4)

Accretion of gas by globular cluster stars.

THOUL A., JORISSEN A., GORIELY S., JEHIN E., MAGAIN P., NOELS A. and PARMENTIER G.

Abstract (from CDS):

Some recent observations of the abundances of s-process, r-process, and α elements in metal-poor stars have led to a new scenario for their formation. According to this scenario, these stars were born in a globular cluster and accreted the s-process enriched gas expelled by cluster stars of higher-mass, thereby modifying their surface abundances. Later on, these polluted stars evaporated from the globular cluster to constitute an important fraction of the current halo population. In addition, there are now many direct observations of abundance anomalies not only in globular cluster giant stars but also in subgiant and main-sequence stars. Accretion again provides a plausible explanation for (at least some of) these peculiarities. Here we investigate further the efficiency of the accretion scenario. We find that in concentrated clusters with large escape velocities, accretion is very efficient and can indeed lead to major modifications of the stellar surface abundances.

Abstract Copyright:

Journal keyword(s): Galaxy: globular clusters: general - stars: abundances - stars: chemically peculiar - stars: AGB and post-AGB

Simbad objects: 40

goto Full paper

goto View the reference in ADS

Number of rows : 40

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     ~ 3627 0
2 2MASS J13252606-4727120 RG* 13 25 26.0674111583 -47 27 12.001360172 14.94 13.81 12.39     ~ 30 0
3 NGC 5139 447 RB? 13 25 46.3326829725 -47 25 59.678055714   14.45 12.74   10.874 S 18 0
4 2MASS J13260017-4733513 RG* 13 26 00.1772544792 -47 33 51.377947216 15.62 14.070 12.563   11.189 ~ 11 0
5 2MASS J13260041-4734308 RG* 13 26 00.4098723458 -47 34 30.843622775 15.29 13.84 12.55   10.907 ~ 28 0
6 SOPS IV e-94 C* 13 26 01.5895134275 -47 33 05.965312173   13.18 11.44   9.966 C1,3p 54 0
7 2MASS J13260392-4726537 RG* 13 26 03.9187904633 -47 26 53.642020757 16.08 14.310 12.946     ~ 17 0
8 2MASS J13260437-4725010 RG* 13 26 04.3784987949 -47 25 00.925011819   13.598 12.107   10.714 ~ 13 0
9 NGC 5139 320 V* 13 26 05.3594359611 -47 28 20.647288340 16.127 14.08 12.43 11.390 10.257 S 32 0
10 2MASS J13261120-4728435 RG* 13 26 11.2122650745 -47 28 43.623064887   13.98 12.50     ~ 29 0
11 2MASS J13261220-4731251 RG* 13 26 12.2030500351 -47 31 25.184921901 15.82 13.820 12.309   10.679 ~ 29 0
12 NGC 5139 577 * 13 26 14.4218669042 -47 28 05.376567879   14.510 13.336   11.824 ~ 15 0
13 NGC 5139 201 * 13 26 24.9957042411 -47 27 06.449383859   13.961 12.262     S 27 0
14 NGC 5139 513 * 13 26 28.8185253286 -47 25 23.504255335   14.570 12.900   11.005 S 24 0
15 2MASS J13262921-4731092 RG* 13 26 29.2112920556 -47 31 09.329998574   14.311 12.443   10.889 S 23 0
16 2MASS J13263483-4734110 RG* 13 26 34.8424327986 -47 34 11.119059877 16.056 14.039 12.249 11.306 10.498 ~ 30 0
17 NGC 5139 286 RB? 13 26 38.1826659919 -47 32 50.405482022   13.945 12.551   11.084 ~ 9 0
18 NGC 5139 480 RB? 13 26 47.2372320738 -47 34 12.317969074   14.196 12.923   11.655 ~ 23 0
19 NGC 5139 GlC 13 26 47.28 -47 28 46.1   6.12 5.33     ~ 3088 0
20 2MASS J13264822-4732412 RG* 13 26 48.2366087352 -47 32 41.329669200   14.278 12.874   11.471 ~ 13 0
21 2MASS J13265071-4737010 RG* 13 26 50.7174503902 -47 37 01.160561212   14.28 12.71   11.159 K5 46 0
22 2MASS J13265076-4733038 RG* 13 26 50.7674358018 -47 33 03.985483634   13.83 12.31   11.037 ~ 16 0
23 NGC 5139 321 RB? 13 27 17.0221080876 -47 29 06.083395676   13.962 12.559     ~ 9 0
24 2MASS J13272304-4743555 RG* 13 27 23.0492927010 -47 43 55.470490191   13.950 12.540     ~ 12 0
25 2MASS J13272418-4734209 RG* 13 27 24.184 -47 34 20.95 15.59 14.220 12.899   11.671 ~ 14 0
26 2MASS J13273303-4726120 RG* 13 27 33.0463849277 -47 26 11.963595480 16.01 14.050 12.512   10.935 ~ 22 0
27 RAVE J132813.6-472424 * 13 28 13.5720292175 -47 24 23.563887096   13.84 12.16     ~ 33 0
28 NGC 5139 279 * 13 28 21.2928583071 -47 20 30.254145625   12.8 12.32 12.14 11.04 ~ 22 0
29 NGC 5139 70 Pe* 13 28 39.9397097742 -47 26 33.190785317   13.49 11.66 11.19   C1,2_CH? 35 0
30 M 5 GlC 15 18 33.22 +02 04 51.7   7.34 5.95     ~ 1810 0
31 M 4 GlC 16 23 35.22 -26 31 32.7           ~ 1708 0
32 M 13 GlC 16 41 41.634 +36 27 40.75     5.8     ~ 2041 0
33 M 92 GlC 17 17 07.39 +43 08 09.4     6.52     ~ 1935 0
34 NGC 6752 GlC 19 10 52.11 -59 59 04.4   6.96 6.28     ~ 1843 0
35 M 71 GlC 19 53 46.49 +18 46 45.1   7.91 6.1     ~ 1041 0
36 M 15 GlC 21 29 58.33 +12 10 01.2   3       ~ 2950 0
37 NGC 5139 425 * ~ ~   14.37 12.68     S 15 0
38 Cl* NGC 5139 MAR 17 * ~ ~   14.55 12.75     ~ 2 0
39 Cl* NGC 5139 MAR 6 * ~ ~   13.99 12.45     ~ 2 0
40 Cl* NGC 5139 MAR 53 * ~ ~   13.73 11.95     ~ 2 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2002A&A...383..491T and select 'bookmark this link' or equivalent in the popup menu


2021.04.13-16:26:30

© Université de Strasbourg/CNRS

    • Contact