2015MNRAS.450.3270R

Query : 2015MNRAS.450.3270R

2015MNRAS.450.3270R - Mon. Not. R. Astron. Soc., 450, 3270-3288 (2015/July-1)

Proper motions and kinematics of selected bulge globular clusters.

ROSSI L.J., ORTOLANI S., BARBUY B., BICA E. and BONFANTI A.

Abstract (from CDS):

We computed proper motions of a selected sample of globular clusters projected on the central bulge, employing CCD images gathered along the last 25 yr at the ESO-New Technology Telescope, ESO-Danish and Hubble Space Telescope telescopes. We presented a method to derive their proper motions, and a set of coordinate transformations to obtain 3D Galactic velocity vectors of the clusters. We analysed 10 globular clusters, namely Terzan 1, Terzan 2, Terzan 4, Terzan 9, NGC 6522, NGC 6558, NGC 6540, AL 3, ESO456-SC38 and Palomar 6. For comparison purposes, we also studied the outer bulge cluster NGC 6652. We discuss the general properties of the proper-motion-cleaned colour-magnitude Diagrams, derived for the first time for most of them. A general conclusion is that the inner bulge globular clusters have clearly lower transverse motions (and spatial velocities) than halo clusters, and appear to be trapped in the bulge bar.

Abstract Copyright: © 2015 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2015)

Journal keyword(s): Galaxy: bulge - globular clusters: individual: NGC 6522, NGC 6558, AL 3, HP 1, ESO456-SC38 (Djorgovski 2), NGC 6540 (Djorgovski 3), Terzan 1, Terzan 2, Terzan 4, Terzan 9, Palomar 6, NGC 6652

Simbad objects: 23

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Number of rows : 23
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 NAME NGP reg 12 51 26.275 +27 07 41.70           ~ 1274 0
2 NGC 6338 Bla 17 15 22.9842192344 +57 24 40.346559927   14.2   8   ~ 205 2
3 ESO 454-29 GlC 17 27 33.24 -30 48 07.8           ~ 278 0
4 GCl 66.1 GlC 17 30 38.90 -31 35 44.0           ~ 139 0
5 ESO 455-11 GlC 17 31 05.20 -29 58 54.0           ~ 208 0
6 ESO 455-23 GlC 17 35 47.80 -30 28 11.0           ~ 285 0
7 ESO 520-21 GlC 17 43 42.20 -26 13 21.0           ~ 211 0
8 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
9 NAME Sgr A* X 17 45 40.03599 -29 00 28.1699           ~ 4970 3
10 Cl Terzan 5 Cl* 17 48 05.00 -24 46 48.0           ~ 948 1
11 NGC 6441 GlC 17 50 13.06 -37 03 05.2           ~ 940 0
12 GCl 80.1 GlC 18 01 38.80 -26 50 23.0           ~ 143 0
13 ESO 456-38 GlC 18 01 49.10 -27 49 33.0           ~ 120 0
14 NAME Baade Window reg 18 03.5 -30 01           ~ 643 3
15 NGC 6522 GlC 18 03 34.08 -30 02 02.3           ~ 569 0
16 NGC 6528 GlC 18 04 49.61 -30 03 20.8   12.12 10.65     ~ 561 0
17 NGC 6540 GlC 18 06 08.60 -27 45 55.0           ~ 145 0
18 NGC 6553 GlC 18 09 15.68 -25 54 27.9   9.08       ~ 644 0
19 NGC 6558 GlC 18 10 17.6 -31 45 50           ~ 265 0
20 ESO 456-78 GlC 18 14 06.600 -28 38 06.00           ~ 82 0
21 NGC 6652 GlC 18 35 45.63 -32 59 26.6           ~ 474 0
22 NAME Galactic Bulge reg ~ ~           ~ 4794 0
23 NAME Galactic Bar reg ~ ~           ~ 1458 0

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