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Edward Schmidt Publications
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Document Type
Article
Date of this Version
1980
Abstract
Four-color and photometry has been obtained for 22 stars in the field of the open cluster NGC 129. Based on this photometry, the membership of these stars in the cluster is discussed and it is found that many are field stars. The color excesses for cluster members obtained here range from E(b – y) = 0.207 to 0.513 and are larger than those found from previous UBV photometry. It has been suggested that this cluster contains a nonvariable Cepheid strip star. However, the present reddening places this star at the edge of the instability strip. A true distance modulus of 10.93 mag is found for this cluster, which is less than some previous values.
Comments
Published in THE ASTRONOMICAL JOURNAL VOLUME 85, NUMBER 6 JUNE 1980. Copyright 1980 Am. Astron. Soc. Used by permission.