1996A&A...313..119D

Query : 1996A&A...313..119D

1996A&A...313..119D - Astronomy and Astrophysics, volume 313119-128 (1996/9-1)

The kinematics of globular clusters, apocentric distances and a halo metallicity gradient.

DAUPHOLE B., GEFFERT M., COLIN J., DUCOURANT C., ODENKIRCHEN M. and TUCHOLKE H.-J.

Abstract (from CDS):

We have studied a sample of 26 globular clusters for which so far absolute proper motions were published in the literature. From the proper motions, distances, and radial velocities we derived space motions of the globular clusters and via numerical integration also the orbits of the clusters in the Galaxy. Orbital eccentricities, total energy, the apo- and perigalactic distances and the maximum distance from the galactic plane and their relation to the metallicity of the clusters have been studied. We find that 10 of the globular clusters are on retrograde orbits. Globular clusters with metallicity larger than [Fe/H]=-1.4 appear to have smaller orbits than the metal poorer clusters. Our data indicate for the first time an abundance gradient in the halo globular clusters.

Abstract Copyright: ∼

Journal keyword(s): globular clusters: general - Galaxy: kinematics and dynamics - Galaxy: halo - Galaxy: evolution - Galaxy: abundances

Simbad objects: 26

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Number of rows : 26
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 288 GlC 00 52 45.24 -26 34 57.4   10 8.13     ~ 1130 0
3 NGC 362 GlC 01 03 14.26 -70 50 55.6     6.58     ~ 1167 0
4 NAME Sextans C GlC 10 05 30.96 +00 04 15.4   15.5 13.9     ~ 354 1
5 NGC 4147 GlC 12 10 06.149 +18 32 31.78   11.45 10.74     ~ 616 0
6 M 53 GlC 13 12 55.25 +18 10 05.4     7.79     ~ 907 0
7 NGC 5139 GlC 13 26 47.28 -47 28 46.1           ~ 3677 0
8 M 3 GlC 13 42 11.62 +28 22 38.2     6.39     ~ 2593 0
9 NGC 5466 GlC 14 05 27.29 +28 32 04.0     9.70     ~ 887 0
10 Cl Pal 5 GlC 15 16 05.30 -00 06 41.0   15.1       ~ 797 1
11 M 5 GlC 15 18 33.22 +02 04 51.7     5.95     ~ 2095 0
12 M 4 GlC 16 23 35.22 -26 31 32.7           ~ 1978 0
13 M 107 GlC 16 32 31.86 -13 03 13.6           ~ 835 0
14 M 13 GlC 16 41 41.634 +36 27 40.75     5.8     ~ 2291 0
15 M 12 GlC 16 47 14.18 -01 56 54.7     6.07     ~ 736 0
16 M 10 GlC 16 57 09.05 -04 06 01.1     4.98     ~ 857 0
17 M 92 GlC 17 17 07.39 +43 08 09.4     6.52     ~ 2240 0
18 NGC 6397 GlC 17 40 42.09 -53 40 27.6     5.17     ~ 2103 0
19 M 28 GlC 18 24 32.89 -24 52 11.4           ~ 821 0
20 M 22 GlC 18 36 23.94 -23 54 17.1           ~ 1459 0
21 NGC 6712 GlC 18 53 04.32 -08 42 21.5           ~ 550 0
22 M 56 GlC 19 16 35.57 +30 11 00.5           ~ 455 0
23 M 71 GlC 19 53 46.49 +18 46 45.1           ~ 1190 0
24 NGC 6934 GlC 20 34 11.37 +07 24 16.1           ~ 459 0
25 M 15 GlC 21 29 58.33 +12 10 01.2           ~ 3274 0
26 M 2 GlC 21 33 27.02 -00 49 23.7     6.25     ~ 1114 1

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