UBV photometry of the open clusters NGC 6604 and NGC 6704

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dc.creator Forbes, Doug
dc.creator DuPuy, David L.
dc.date.accessioned 2013-11-06T19:49:59Z
dc.date.available 2013-11-06T19:49:59Z
dc.date.issued 1978-03
dc.identifier.issn 0004-6256
dc.identifier.uri http://library2.smu.ca/xmlui/handle/01/25346
dc.description Publisher's version/PDF
dc.description.abstract The open clusters NGC 6604 and NGC 6704 have been studied with UBV photoelectric and photographic photometry, resulting in improved distance and color-magnitude diagrams. NGC 6604 is a very young (~4x 10 [supercript 6] yr) cluster with 30 probable members. The color-magnitude diagram shows a bright, well-defined main sequence; the central star of the cluster, HD 167971, is an O8f supergiant which appears to be slightly evolved. The fainter stars with (B-V)[subscript 0][greater than or equal to] 0.0 appear to lie above the zero-age main sequence and may be pre-main-sequence objects still in the process of gravitational contraction. This result must be confirmed because of the uncertainty in the photometric calibration near V=16 mag. NGC 6704 is a moderately young (~2x10[superscript 7] yr) cluster with 17 probable members observed, including the eclipsing binary FN Sct. The color-magnitude diagram shows a fairly well-defined main sequence, but no giant members are observed. en_CA
dc.language.iso en en_CA
dc.publisher American Astronomical Society en_CA
dc.relation.uri http://dx.doi.org/10.1086/112201
dc.rights Article is made available in accordance with the publisher’s policy and is subject to copyright law. Please refer to the publisher’s site. Any re-use of this article is to be in accordance with the publisher’s copyright policy. This posting is in no way granting any permission for re-use to the reader/user.
dc.subject.lcsh Stars -- Open clusters
dc.subject.lcsh Astronomical photometry
dc.title UBV photometry of the open clusters NGC 6604 and NGC 6704 en_CA
dc.type Text en_CA
dcterms.bibliographicCitation Astronomical Journal 83(3), 266-271. (1978)


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Article is made available in accordance with the publisher’s policy and is subject to copyright law. Please refer to the publisher’s site. Any re-use of this article is to be in accordance with the publisher’s copyright policy. This posting is in no way granting any permission for re-use to the reader/user.
 
Published Version: http://dx.doi.org/10.1086/112201
 
 

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