2005AJ....130..635C

Query : 2005AJ....130..635C

2005AJ....130..635C - Astron. J., 130, 635-642 (2005/August-0)

The open cluster NGC 6520 and the nearby dark molecular cloud Barnard 86.

CARRARO G., MENDEZ R.A., MAY J. and MARDONES D.

Abstract (from CDS):

Wide-field BVI photometry and 12CO(1⟶0) observations are presented in the region of the open cluster NGC 6520 and the dark molecular cloud Barnard 86. From the analysis of the optical data we find that the cluster is rather compact, with a radius of 1'.0±0'.5, smaller than previous estimates. The cluster age is 150±50 Myr, and the reddening EB–V=0.42±0.10. The distance from the Sun is estimated to be 1900±100 pc, which is larger than previous estimates. We finally derive basic properties of the dark nebula Barnard 86 on the assumption that it lies at the same distance as the cluster.

Abstract Copyright: ∼

Journal keyword(s): ISM: Clouds - ISM: Individual: Name: Barnard 86 - Galaxy: Open Clusters and Associations: General - Galaxy: Open Clusters and Associations: Individual: NGC Number: NGC 6520

CDS comments: Landolt (1992) standard field G26 is probably G 26-7 field.

Simbad objects: 11

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Number of rows : 11
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 M 41 OpC 06 46 03.1 -20 43 07   4.89 4.5     ~ 308 0
2 V* UY Sex HS* 10 50 02.8265487864 -00 00 36.879009588 12.063 13.184 13.474 13.606 13.769 sdO9VIIHe6 175 0
3 PG 1323-086 HS* 13 25 39.4669501176 -08 49 19.067387484 12.660 13.341 13.481 13.529 13.608 sdB3IHe8 144 1
4 PG 1633+099 HS* 16 35 24.0241690848 +09 47 49.891209036 13.215 14.205 14.396 14.481 14.609 sdB 113 0
5 NGC 6204 OpC 16 46 09.1 -47 01 29   8.51 8.2     ~ 139 0
6 PG 1657+078 HS* 16 59 32.2150744512 +07 43 31.412466912 13.919 14.877 15.019 15.098 15.115 sdB 56 0
7 LDN 93 DNe 18 02 58 -27 52.1           ~ 23 0
8 NGC 6520 OpC 18 03 25.4 -27 53 09     7.6     ~ 72 0
9 SA 110- reg 18 45 +00.6           ~ 100 0
10 SA 112- reg 20 42 07 +00 31.4           ~ 23 0
11 Wolf 922 ** 21 31 18.5690289199 -09 47 26.482273373 14.901 13.670 12.006 10.708 9.038 M4.5V 172 0

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