2003A&A...408..127D

Query : 2003A&A...408..127D

2003A&A...408..127D - Astronomy and Astrophysics, volume 408127-134 (2003/9-2)

NTT infrared imaging of star cluster candidates towards the central parts of the Galaxy.

DUTRA C.M., ORTOLANI S., BICA E., BARBUY B., ZOCCALI M. and MOMANY Y.

Abstract (from CDS):

We address the issue whether the central parts of the Galaxy harbour young clusters other than Arches, Quintuplet and the Nuclear Young Cluster. A large sample of centrally projected cluster candidates has been recently identified from the 2MASS J, H and Ks Atlas. We provide a catalogue of higher angular resolution and deeper images for 57 2MASS cluster candidates, obtained with the near-IR camera SOFI at the ESO NTT telescope. We classify 10 objects as star clusters, some of them deeply embedded in gas and/or dust clouds. Three other objects are probably star clusters, although the presence of dust in the field does not exclude the possibility of their being field stars seen through low-absorption regions. Eleven objects are concentrations of stars in areas of little or no gas, and are classified as dissolving cluster candidates. Finally, 31 objects turned out to be the blend of a few bright stars, not resolved as such in the low resolution 2MASS images. By combining the above results with other known objects we provide an updated sample of 42 embedded clusters and candidates projected within 7°. As a first step we study Object 11 of Dutra & Bica (2000A&A...359L...9D) projected at ≃1° from the nucleus. We present H and Ks photometry and study the colour-magnitude diagram and luminosity function. Object 11 appears to be a less massive cluster than Arches or Quintuplet, and it is located at a distance from the Sun d☉≃8kpc, with a visual absorption AV≃15.

Abstract Copyright: ∼

Journal keyword(s): Galaxy: open clusters and associations - ISM: dust, extinction

Simbad objects: 71

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Number of rows : 71
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 [BDB2003] G354.67+00.48 Cl* 17 30 24.0 -33 11 15           ~ 8 0
2 GAL 354.66+00.47 HII 17 30 25.3 -33 11 31           ~ 5 0
3 [BDB2003] G353.42-00.36 Cl* 17 30 28.2 -34 41 30           ~ 6 0
4 GAL 353.4-00.4 HII 17 30 31.4 -34 40 59           ~ 20 0
5 [BDB2003] G002.20+03.45 Cl* 17 37 40.7 -25 15 03           ~ 3 0
6 [BDB2003] G003.73+03.96 OpC 17 39 20.1 -23 41 00           ~ 6 0
7 [DB2000] 29 Cl* 17 42 14.1 -28 18 28           ~ 2 0
8 [DB2000] 52 OpC 17 42 28.1 -29 56 23           ~ 6 0
9 NAME Sgr E Rad 17 42 38 -29 48.2           ~ 60 0
10 [DB2000] 19 Cl* 17 42 40.9 -27 28 30           ~ 2 0
11 [DB2000] 22 Cl* 17 42 58.9 -28 02 09           ~ 2 0
12 [DB2000] 20 Cl* 17 43 12.4 -27 55 04           ~ 2 0
13 [DB2000] 21 Cl* 17 43 17.3 -27 53 45           ~ 2 0
14 NAME the Ripple Filament Rad 17 43 52.0 -29 13 47           ~ 52 1
15 [DB2000] 23 Cl* 17 44 05.2 -27 40 03           ~ 2 0
16 [DB2000] 54 Cl* 17 44 06.2 -29 10 23           ~ 4 0
17 [DB2000] 53 Cl* 17 44 13.4 -29 15 34           ~ 4 0
18 [DB2000] 55 OpC 17 44 24.4 -29 12 13           ~ 6 0
19 [BDB2003] G359.28-00.25 Cl* 17 44 52.7 -29 40 48           ~ 9 0
20 GAL 359.3-00.3 Rad 17 45 -29.7           ~ 3 0
21 [DB2000] 58 OpC 17 45 00.1 -28 51 37           ~ 13 1
22 [DB2000] 33 OpC 17 45 32.2 -26 41 48           ~ 7 0
23 [DB2000] 37 Cl* 17 45 38.0 -26 12 10           ~ 2 0
24 [DB2000] 36 Cl* 17 45 41.7 -26 12 55           ~ 2 0
25 [DB2000] 35 OpC 17 45 48.6 -26 15 03           ~ 3 0
26 NAME Arches Cluster Cl* 17 45 50.5 -28 49 28           ~ 792 0
27 [DB2000] 17 OpC 17 45 57.7 -27 53 16           ~ 4 0
28 GAL 359.7-00.4 Rad 17 46 -29.4           ~ 2 0
29 LBN 000.03+00.13 HII 17 46.2 -28 51           ~ 16 0
30 NAME Quintuplet Cluster OpC 17 46 13.9 -28 49 48           ~ 561 0
31 [DB2000] 56 Cl* 17 46 24.2 -29 22 19           ~ 4 1
32 [DB2000] 44 OpC 17 46 34.9 -24 53 26           ~ 8 0
33 [DB2000] 1 OpC 17 46 51.2 -29 03 47           ~ 6 1
34 [DB2000] 4 Cl* 17 47 05.7 -28 46 54           ~ 4 1
35 OH 000.3-00.2 OH* 17 47 06.94704 -28 44 41.9136           O-rich 78 1
36 [DB2000] 5 Cl* 17 47 07.0 -28 46 04           ~ 8 1
37 LBN 3 HII 17 47 08.0 -28 46 30           ~ 83 3
38 IRAS 17439-2845 HII 17 47 08.6 -28 46 18           ~ 91 1
39 [DB2000] 6 Cl* 17 47 09.6 -28 46 26           ~ 9 1
40 [DB2000] 2 Cl* 17 48 01.4 -29 06 52           ~ 2 1
41 [DB2000] 26 Cl* 17 48 41.5 -28 01 42           ~ 7 0
42 NAME Sgr D MoC 17 48 41.75 -28 01 45.0           ~ 137 1
43 [DB2000] 38 Cl* 17 48 58.7 -26 21 10           ~ 2 0
44 [DB2000] 8 Cl* 17 50 04.7 -28 52 40           ~ 3 0
45 [DB2000] 7 OpC 17 50 06.1 -28 53 13           ~ 5 0
46 [DB2000] 3 Cl* 17 50 12.4 -29 12 21           ~ 2 0
47 [DB2000] 12 OpC 17 50 16.4 -28 51 42           ~ 6 1
48 [DB2000] 10 OpC 17 50 17.6 -28 53 40           ~ 6 1
49 [DB2000] 11 OpC 17 50 24.1 -28 53 06           ~ 8 1
50 [DB2000] 57 Cl* 17 50 26.5 -29 45 24           ~ 2 0
51 [DB2000] 42 OpC 17 50 43.1 -26 17 29           ~ 3 0
52 [DB2000] 31 OpC 17 50 49.5 -27 47 07           ~ 4 0
53 [DB2000] 34 Cl* 17 51 07.6 -27 08 51           ~ 2 0
54 LBN 000.64-01.04 HII 17 51.7 -28 54           ~ 10 0
55 [DB2000] 15 Cl* 17 51 56.8 -28 48 56           ~ 2 0
56 [DB2000] 43 Cl* 17 52 07.1 -26 28 18           ~ 2 0
57 [DB2000] 46 Cl* 17 52 44.5 -25 25 17           ~ 2 0
58 [DB2000] 41 Cl* 17 53 02.8 -26 39 26           ~ 3 0
59 [DB2000] 40 Cl* 17 53 15.9 -26 46 52           ~ 3 0
60 [DB2000] 16 Cl* 17 53 58.0 -29 31 42           ~ 2 0
61 [DB2000] 14 Cl* 17 54 38.9 -29 13 36           ~ 2 0
62 [DB2000] 39 Cl* 17 55 03.3 -27 08 42           ~ 2 0
63 [DB2000] 13 OpC 17 55 20.9 -29 23 26           ~ 6 0
64 [DB2000] 24 OpC 17 55 30.2 -29 01 39           ~ 5 0
65 [DB2000] 9 Cl* 17 56 37.5 -29 43 06           ~ 2 0
66 [DB2000] 30 OpC 17 56 55.8 -28 37 21           ~ 7 0
67 [DB2000] 48 Cl* 17 58 30.0 -26 10 04           ~ 2 1
68 [DB2000] 49 Cl* 17 58 34.0 -26 06 55           ~ 3 1
69 [DB2000] 25 Cl* 17 58 54.8 -29 23 40           ~ 2 0
70 [DB2000] 47 Cl* 17 59 17.5 -26 17 19           ~ 2 0
71 [DB2000] 32 OpC 17 59 34.6 -28 33 19           ~ 5 0

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