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The Membership and Distance of the Open Cluster Collinder 419

The young open cluster Collinder 419 surrounds the massive O star, HD 193322, that is itself a remarkable multiple star system containing at least four components. Here we present a discussion of the cluster distance based upon new spectral classifications of the brighter members, UBV photometry, and an analysis of astrometric and photometric data from the UCAC3 and 2MASS catalogs. We determine an average cluster reddening of E(B-V)=0.37 +- 0.05 mag and a cluster distance of 741 +- 36 pc. The cluster probably contains some very young stars that may include a reddened M3 III star, IRAS~20161+4035.

preprint2010arXivOpen access
Lewis C. Roberts, Jr.Douglas R. GiesJ. Robert ParksErika D. GrundstromM. Virginia McSwainDavid H. BergerBrian D. MasonTheo A. ten BrummelaarNils H. Turner
astro-ph.GA
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Lewis C. Roberts, Jr.Douglas R. GiesJ. Robert ParksErika D. GrundstromM. Virginia McSwainDavid H. BergerBrian D. MasonTheo A. ten BrummelaarNils H. Turner

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