2001ApJ...546L.109B

Query : 2001ApJ...546L.109B

2001ApJ...546L.109B - Astrophys. J., 546, L109-L113 (2001/January-2)

Star counts across the red giant branch bump and below.

BONO G., CASSISI S., ZOCCALI M. and PIOTTO G.

Abstract (from CDS):

We present a new observable–Rbump–which is the ratio between the star counts across the red giant branch (RGB) bump and fainter RGB stars to investigate the occurrence of a deep-mixing phenomenon during these evolutionary phases. The comparison between predicted and empirical Rbump-values, based on a large and homogeneous set of Hubble Space Telescope data, brings out that evolutionary lifetimes predicted by canonical RGB models do account for the bulk of Galactic globular clusters included in our sample (29). This evidence suggests that bump and fainter RGB stars do not show the occurrence of deep mixing, which significantly changes their chemical stratification. A few possible exceptions to this general rule are briefly discussed.

Abstract Copyright: ∼

Journal keyword(s): Galaxy: Globular Clusters: General - Stars: Abundances - Stars: Evolution - Stars: Interiors

Simbad objects: 32

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Number of rows : 32
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 NGC 362 GlC 01 03 14.26 -70 50 55.6     6.58     ~ 1167 0
3 NGC 1851 GlC 05 14 06.76 -40 02 47.6           ~ 1529 0
4 M 79 GlC 05 24 10.59 -24 31 27.3     8.16     ~ 883 0
5 NGC 2808 GlC 09 12 03.10 -64 51 48.6           ~ 1540 0
6 NGC 5634 GlC 14 29 37.28 -05 58 35.1   10.69 10.05     ~ 333 0
7 NGC 5694 GlC 14 39 36.52 -26 32 18.0           ~ 323 0
8 NGC 5824 GlC 15 03 58.612 -33 04 06.70   10.28 9.56     ~ 441 0
9 M 5 GlC 15 18 33.22 +02 04 51.7     5.95     ~ 2095 0
10 NGC 5927 GlC 15 28 00.69 -50 40 22.9           ~ 499 0
11 NGC 5946 GlC 15 35 28.58 -50 39 35.0           ~ 210 0
12 NGC 5986 GlC 15 46 03.00 -37 47 11.1     6.92     ~ 408 0
13 M 80 GlC 16 17 02.41 -22 58 33.9           ~ 780 0
14 NGC 6139 GlC 16 27 39.987 -38 50 57.03   11.03 9.68     ~ 231 0
15 M 13 GlC 16 41 41.634 +36 27 40.75     5.8     ~ 2291 0
16 M 19 GlC 17 02 37.69 -26 16 04.6   8.45 5.57     ~ 406 1
17 NGC 6284 GlC 17 04 28.747 -24 45 51.22   10.72 7.43     ~ 302 0
18 NGC 6287 GlC 17 05 09.4906767360 -22 42 28.099250172   11.49 10.30     ~ 240 0
19 NGC 6293 GlC 17 10 10.42 -26 34 54.2           ~ 309 0
20 M 92 GlC 17 17 07.39 +43 08 09.4     6.52     ~ 2240 0
21 NGC 6342 GlC 17 21 10.14 -19 35 14.7     10.01     ~ 310 0
22 NGC 6356 GlC 17 23 34.99 -17 48 46.9   10.01 7.42     ~ 372 1
23 NGC 6362 GlC 17 31 54.99 -67 02 54.0           ~ 637 0
24 NGC 6388 GlC 17 36 17.461 -44 44 08.34           ~ 988 1
25 NGC 6441 GlC 17 50 13.06 -37 03 05.2           ~ 940 0
26 NGC 6522 GlC 18 03 34.08 -30 02 02.3           ~ 569 0
27 NGC 6624 GlC 18 23 40.51 -30 21 39.7           ~ 939 1
28 NGC 6652 GlC 18 35 45.63 -32 59 26.6           ~ 474 0
29 NGC 6934 GlC 20 34 11.37 +07 24 16.1           ~ 459 0
30 M 72 GlC 20 53 27.70 -12 32 14.3     8.96     ~ 465 0
31 M 15 GlC 21 29 58.33 +12 10 01.2           ~ 3274 0
32 M 30 GlC 21 40 22.12 -23 10 47.5     7.10     ~ 1121 0

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