Wide- and narrow-band photometry of stars in a field around Collinder 135

Details Wide- and narrow-band photometry of stars in a field around Collinder 135 Wide- and narrow-band photometry of stars in a field around Collinder 135

Aug 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980pasp...92..501c&link_type=abstract

Astronomical Society of the Pacific, Publications, vol. 92, Aug.-Sept. 1980, p. 501-513. Research supported by the Consejo Naci

Mathematics

Logic

3

B Stars, H Alpha Line, H Beta Line, Star Clusters, Stellar Spectra, Stellar Spectrophotometry, Electrophotometers, Interstellar Extinction, Main Sequence Stars, Open Clusters, Ubv Spectra

Scientific paper

A field of about 10,000 square arcmin around the cluster Cr 135 is studied using UBV, H-alpha, and H-beta photometries. The photometric data do not favor the existence of Cr 135 as a real open cluster. Only eight B-type stars lie on a very well-defined main sequence in the UBV photometric diagrams. These eight stars - which are shown not to be gravitationally bound - are located at a mean distance of 630 pc with a foreground color excess amounting to E(B-V) equals 0.06 magnitudes. These stars, together with most of the B stars in the region, can be considered probable members of the large, old, Pup-Can association.

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