1996A&A...311..778B

Query : 1996A&A...311..778B

1996A&A...311..778B - Astronomy and Astrophysics, volume 311778-792 (1996/7-3)

Luminous stars in globular clusters: new data for nine galactic clusters.

BROCATO E., BUONANNO R., MALAKHOVA Y. and PIERSIMONI A.M.

Abstract (from CDS):

New CCD Color-Magnitude Diagrams (CMD) for 9 galactic globular clusters are presented. This work is part of a project aimed at giving a firm statistical basis to the interpretation of the horizontal branch (HB) morphology. The CMDs presented in this study show in general more than 100 HB stars and two clusters (NGC 6218 and NGC 6681) disclose a clear evidence for the occurrence of the `second parameter'. The HB morphology indexes for each cluster are derived. The helium abundance, evaluated through the R-method, shows no correlation with the galactocentric distance or with the HB morphology. The RGB bump has been detected for 4 clusters in the sample.

Abstract Copyright: ∼

Journal keyword(s): globular clusters: general - stars: HR diagram - horizontal-branch - Population II

Simbad objects: 17

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Number of rows : 17
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 288 GlC 00 52 45.24 -26 34 57.4   10 8.13     ~ 1130 0
2 NGC 1261 GlC 03 12 16.21 -55 12 58.4     8.63     ~ 579 0
3 NGC 4372 GlC 12 25 45.43 -72 39 32.7   10.86 9.85     ~ 327 0
4 M 3 GlC 13 42 11.62 +28 22 38.2     6.39     ~ 2593 0
5 NGC 5286 GlC 13 46 26.81 -51 22 27.3           ~ 485 0
6 NGC 5824 GlC 15 03 58.612 -33 04 06.70   10.28 9.56     ~ 441 0
7 NGC 6101 GlC 16 25 48.12 -72 12 07.9           ~ 337 0
8 M 12 GlC 16 47 14.18 -01 56 54.7     6.07     ~ 736 0
9 M 62 GlC 17 01 12.60 -30 06 44.5           ~ 668 0
10 M 92 GlC 17 17 07.39 +43 08 09.4     6.52     ~ 2240 0
11 NGC 6397 GlC 17 40 42.09 -53 40 27.6     5.17     ~ 2103 0
12 M 70 GlC 18 43 12.76 -32 17 31.6           ~ 421 0
13 NGC 6717 GlC 18 55 06.04 -22 42 05.3           ~ 273 0
14 M 55 GlC 19 39 59.71 -30 57 53.1     6.49     ~ 913 0
15 NGC 6934 GlC 20 34 11.37 +07 24 16.1           ~ 459 0
16 M 72 GlC 20 53 27.70 -12 32 14.3     8.96     ~ 465 0
17 M 30 GlC 21 40 22.12 -23 10 47.5     7.10     ~ 1121 0

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