2011MNRAS.414..652Y

Query : 2011MNRAS.414..652Y

2011MNRAS.414..652Y - Mon. Not. R. Astron. Soc., 414, 652-658 (2011/June-2)

Optical photometric study of the open clusters koposov 12, koposov 53 and koposov 77.

YADAV R.K.S., GLUSHKHOVA E.V., SARIYA D.P., POROKHOVA A.V., KUMAR B. and SAGAR R.

Abstract (from CDS):

We present UBVI CCD photometry in the region of the open clusters Koposov 12, Koposov 53 and Koposov 77. The optical CCD data for these clusters are obtained for the first time. The radii are found to be 4.6, 4.2 and 2.4 arcmin. The reddenings E(B-V) are 0.51±0.05, 0.41 ± 0.05 and 0.56±0.05 mag for Koposov 12, Koposov 53 and Koposov 77, respectively, while the corresponding distances are 2.0±0.2, 5.3±0.5 and 5.4 ± 0.5 kpc. Comparison with Z= 0.008 isochrones leads to an age of 0.6 ±0.2 Gyr for Koposov 12. Ages of 89±10 Myr for Koposov 53 and 1.2 ±0.3 Gyr for Koposov 77 are determined using the isochrones of Z= 0.019. Our analysis shows that the reddening law is normal towards the clusters under study.

Abstract Copyright: 2011 The Authors Monthly Notices of the Royal Astronomical Society2011 RAS

Journal keyword(s): stars: evolution - stars: Hertzsprung-Russell and colour-magnitude diagrams - open clusters and associations: individual: Koposov 12 - open clusters and associations: individual: Koposov 53 - open clusters and associations: individual: Koposov 77 - galaxies: star clusters: general

Simbad objects: 7

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Number of rows : 7
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 [KGZ2008] 77 OpC 05 43 52.3 +21 42 37           ~ 11 0
2 NAME Gal Anticenter reg 05 46 +28.9           ~ 1024 0
3 [FSR2007] 0802 OpC 06 00 59.0 +35 16 54           ~ 35 0
4 [KGZ2008] 53 OpC 06 08 54.8 +26 15 55           ~ 24 0
5 SA 98- reg 06 52 04.1 -00 23 58           ~ 179 0
6 RL 149 HS* 07 24 14.3741784768 -00 33 04.165016904 12.958 13.737 13.866 13.906 13.974 sdB 114 0
7 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0

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