2010A&A...521A..54G


Query : 2010A&A...521A..54G

2010A&A...521A..54G - Astronomy and Astrophysics, volume 521, A54-54 (2010/10-1)

Diluting the material forming the second generation stars in globular clusters: the contribution by unevolved stars.

GRATTON R.G. and CARRETTA E.

Abstract (from CDS):

In this short communication we consider the possibility that stars less evolved than the polluters are the source of the dilution needed to explain the observed composition of second-generation globular cluster (GC) stars and the Na-O and Mg-Al anticorrelations. If these stars can lose 0.5-1% of their mass during the relevant epochs, there is enough diluting material to produce the observed anticorrelations. In this case, the original mass of proto-GCs was several tens times higher than the current mass of GCs. While not strictly impossible, this is a stringent hypothesis that needs more support. Should this scenario be found true, then the link between the primordial (first-generation) population in GC and the field population would be very strong.

Abstract Copyright:

Journal keyword(s): stars: abundances - stars: atmospheres - stars: population II - globular clusters: general

Simbad objects: 8

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Number of rows : 8
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024
#notes
1 NGC 104 GlC 00 24 05.359 -72 04 53.20     4.09     ~ 3917 0
2 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 11149 1
3 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 17434 0
4 NGC 2632 OpC 08 40 13.0 +19 37 16           ~ 1564 0
5 NGC 2808 GlC 09 12 03.10 -64 51 48.6           ~ 1420 0
6 NGC 6397 GlC 17 40 42.09 -53 40 27.6     5.17     ~ 1976 0
7 * bet Lyr EB* 18 50 04.7951442356 +33 21 45.600371200 2.85 3.42 3.42 3.31 3.29 B8.5Ib-II 926 0
8 NGC 6752 GlC 19 10 52.11 -59 59 04.4           ~ 2001 0

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