2011ApJ...737...31O

Query : 2011ApJ...737...31O

2011ApJ...737...31O - Astrophys. J., 737, 31 (2011/August-2)

A fossil bulge globular cluster revealed by very large telescope multi-conjugate adaptive optics.

ORTOLANI S., BARBUY B., MOMANY Y., SAVIANE I., BICA E., JILKOVA L., SALERNO G.M. and JUNGWIERT B.

Abstract (from CDS):

The globular cluster HP 1 is projected on the bulge, very close to the Galactic center. The Multi-Conjugate Adaptive Optics Demonstrator on the Very Large Telescope allowed us to acquire high-resolution deep images that, combined with first epoch New Technology Telescope data, enabled us to derive accurate proper motions. The cluster and bulge fields' stellar contents were disentangled through this process and produced an unprecedented definition in color-magnitude diagrams of this cluster. The metallicity of [Fe/H] ~ -1.0 from previous spectroscopic analysis is confirmed, which together with an extended blue horizontal branch imply an age older than the halo average. Orbit reconstruction results suggest that HP 1 is spatially confined within the bulge.

Abstract Copyright: ∼

Journal keyword(s): Galaxy: bulge - globular clusters: general - globular clusters: individual: HP 1

Simbad objects: 21

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Number of rows : 21
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 NAME Ori Trapezium OpC 05 35 16.5 -05 23 14           ~ 1708 1
3 RMC 136 Cl* 05 38 42.396 -69 06 03.36   5.81 5.40     ~ 2236 2
4 [FSR2007] 1415 OpC 08 40 25.0 -44 44 08           ~ 14 0
5 NGC 3201 GlC 10 17 36.82 -46 24 44.9           ~ 1001 0
6 Cl Trumpler 15 OpC 10 44 43.6 -59 22 07           ~ 229 0
7 NGC 5139 GlC 13 26 47.28 -47 28 46.1           ~ 3677 0
8 M 107 GlC 16 32 31.86 -13 03 13.6           ~ 835 0
9 ESO 455-11 GlC 17 31 05.20 -29 58 54.0           ~ 208 0
10 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
11 NAME Sgr A* X 17 45 40.03599 -29 00 28.1699           ~ 4970 3
12 Cl Terzan 5 Cl* 17 48 05.00 -24 46 48.0           ~ 948 1
13 NGC 6441 GlC 17 50 13.06 -37 03 05.2           ~ 940 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 6553 GlC 18 09 15.68 -25 54 27.9   9.08       ~ 644 0
18 NGC 6752 GlC 19 10 52.11 -59 59 04.4           ~ 2121 0
19 M 30 GlC 21 40 22.12 -23 10 47.5     7.10     ~ 1121 0
20 NAME Galactic Bulge reg ~ ~           ~ 4794 0
21 NAME Galactic Bar reg ~ ~           ~ 1458 0

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