1995A&A...301..684C

Query : 1995A&A...301..684C

1995A&A...301..684C - Astronomy and Astrophysics, volume 301684-692 (1995/9-3)

IUE observations of blue horizontal branch stars in the globular clusters M 3 and NGC 6752.

CACCIARI C., FUSI PECCI F., BRAGAGLIA A. and BUZZONI A.

Abstract (from CDS):

IUE observations of 3 blue horizontal branch (BHB) stars in M 3 and 4 stars in NGC 6752 are presented. In addition, unpublished IUE archive data have been used for 5 more BHB stars in NGC 6752. Using the most recent model atmospheres (Kurucz 1992) the physical parameters of these stars have been derived, and compared with the ZAHB evolutionary tracks by Dorman et al. (1993). All the stars, including those that appear to be evolved off the ZAHB, are consistent with the theoretical predictions. The present results are compared with those obtained in previous similar analyses: the possible presence of some low-gravity stars is confirmed in M 3, while no clear indication is found of multiple stellar populations on the HB of NGC 6752. However different populations, if any, would be difficult to identify in the logg-logTe plane because of the simultaneous effect of various parameters and the poor accuracy of the gravity estimates from IUE data.

Abstract Copyright: ∼

Journal keyword(s): clusters: globular: individual: M3 , NGC 6752 - stars: evolution of - stars: fundamental parameters - stars: horizontal branch

CDS comments: Star CL* NGC 6752 CL 3118 often quoted 3-118

Simbad objects: 31

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Number of rows : 31
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 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 5139 GlC 13 26 47.28 -47 28 46.1           ~ 3677 0
7 Cl* NGC 5272 S 13057 HS? 13 41 55.9219239624 +28 22 53.298986376     16.95     ~ 4 0
8 Cl* NGC 5272 BCB 524 * 13 42 01.423 +28 23 31.79           ~ 2 0
9 Cl* NGC 5272 S 15037 * 13 42 05.506 +28 18 59.12           ~ 4 0
10 M 3 GlC 13 42 11.62 +28 22 38.2     6.39     ~ 2593 0
11 NAME vZ 1128 pA* 13 42 16.7509672392 +28 26 00.616904988   14.77 15.04 15.50   O8p 80 0
12 Cl* NGC 5272 S 11058 HS? 13 42 28.6852898136 +28 24 32.796736524     17.10     ~ 6 0
13 M 5 GlC 15 18 33.22 +02 04 51.7     5.95     ~ 2095 0
14 Cl* NGC 6752 BUON 5151 HS? 19 09 39.4630197864 -60 01 04.378384200   17.01 17.22     ~ 4 0
15 Cl* NGC 6752 BUON 4951 * 19 09 55.0 -60 01 25   15.33 15.38     ~ 2 0
16 Cl* NGC 6752 CL 2167 HS? 19 10 06.8975039040 -59 57 32.235381468   15.59 15.65     ~ 7 0
17 Cl* NGC 6752 BUON 4548 * 19 10 10.9 -59 51 31   16.46 16.60     ~ 6 0
18 Cl* NGC 6752 BUON 4009 * 19 10 22.2 -60 07 47   17.14 17.44     ~ 3 0
19 Cl* NGC 6752 CL 3507 HS* 19 10 23.3436845952 -59 52 28.288200504   17.28 17.46     sdB 7 0
20 Cl* NGC 6752 CL 3118 HS* 19 10 38.3599841064 -60 08 50.384723496   17.50 17.76     sdB 9 0
21 Cl* NGC 6752 CL 4287 * 19 10 44.9 -59 51 48   15.97 16.08     ~ 2 0
22 NGC 6752 GlC 19 10 52.11 -59 59 04.4           ~ 2121 0
23 Cl* NGC 6752 CL 2128 HS* 19 11 08.7263730384 -59 52 21.237144060   15.75 15.99 16.251   sdOB 12 0
24 Cl* NGC 6752 CL 1112 * 19 11 27.3 -60 03 51   17.35 17.61     ~ 3 0
25 Cl* NGC 6752 CL 3781 HS* 19 11 29.7957547392 -60 02 54.929912424   16.89 17.13     sdB 10 0
26 Cl* NGC 6752 CL 602 * 19 11 37.7 -60 03 11   17.14 17.45     ~ 4 0
27 Cl* NGC 6752 CL 3675 HS* 19 11 42.0190558320 -59 56 34.544845680   16.90 17.12     sdB 8 0
28 M 15 GlC 21 29 58.33 +12 10 01.2           ~ 3274 0
29 Cl* NGC 6752 CL 841 * ~ ~   16.25 16.42     ~ 1 0
30 Cl* NGC 5272 S 16054 * ~ ~           ~ 1 0
31 Cl* NGC 6752 CL 649 * ~ ~   16.78 17.03     ~ 1 0

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