Photometry of the S VUL cluster

Details Photometry of the S VUL cluster Photometry of the S VUL cluster

Aug 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986jrasc..80..166t&link_type=abstract

Journal of the Royal Astronomical Society of Canada (ISSN 0035-872X), vol. 80, Aug. 1986, p. 166-179.

Astronomy and Astrophysics

Astronomy

8

Astronomical Photometry, Electrophotometry, Faint Objects, Star Clusters, Ubv Spectra, Astronomical Catalogs, Astronomical Photography, Cepheid Variables, Color-Magnitude Diagram, Open Clusters, Stellar Color

Scientific paper

Attention is given to the photometric study of the open cluster C1947+272 (Turner, 1985) which is spatially coincident with the long-period Cepheid variable S Vulpeculae. Values for the reddening, distance, and age of the cluster are different from those expected for S Vul indicating that the cluster and variable form only a chance line-of-sight coincidence. Several objects are identified in the field of the cluster which are probably background B-type stars associated with the VUL OB1 complex. These provide an estimate of E(B-V) = 0.90 + or 0.02 for the space reddening of S Vul and suggest that S Vul is not as distant as Vul OB2.

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