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2010MNRAS.404.1385S - Mon. Not. R. Astron. Soc., 404, 1385-1395 (2010/May-3)

Optical photometry and basic parameters of 10 unstudied open clusters.


Abstract (from CDS):

We present BVI CCD photometry of 10 northern open clusters, Berkeley43, Berkeley45, Berkeley47, NGC 6846, Berkeley49, Berkeley51, Berkeley89, Berkeley91, Tombaugh4 and Berkeley9, and estimate their fundamental parameters. Eight of the clusters are located in the first Galactic quadrant and two are in the second. This is the first optical photometry for eight clusters. All of them are embedded in rich Galactic fields and have large reddening towards them [E(B - V) = 1.0-2.3mag]. There is a possibility that some of these difficult-to-study clusters may be asterisms rather than physical systems, but assuming that they are physical clusters, we find that eight of them are located beyond 2kpc and six clusters (60 per cent of the sample) are located well above or below the Galactic plane. Seven clusters have ages 500Myr or less and the other three are 1Gyr or more in age. This sample of clusters has increased the optical photometry of clusters in the second half of the first Galactic quadrant, beyond 2kpc, from 10 to 15. NGC 6846 is found to be one of the most distant clusters in this region of the Galaxy.

Abstract Copyright: © 2010 The Authors. Journal compilation © 2010 RAS

Journal keyword(s): open clusters and associations: general - open clusters and associations: individual: Berkeley43 - open clusters and associations: individual: Berkeley45 - open clusters and associations: individual: Berkeley47 - open clusters and associations: individual: NGC 6846 - open clusters and associations: individual: Berkeley49

Simbad objects: 15

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