Photoelectric UBV photometry of stars selected in the HK objective-prism survey

Details Photoelectric UBV photometry of stars selected in the HK objective-prism survey Photoelectric UBV photometry of stars selected in the HK objective-prism survey

Jul 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apjs...76.1001p&link_type=abstract

Astrophysical Journal Supplement Series (ISSN 0067-0049), vol. 76, July 1991, p. 1001-1031.

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50

Blue Stars, Electrophotometry, Horizontal Branch Stars, Stellar Color, Stellar Spectrophotometry, Ubv Spectra, Cepheid Variables, Interstellar Extinction, Random Errors, Stellar Spectra, Tables (Data)

Scientific paper

Photoelectric UBV observations of 1782 stars are used to explore properties of the HK objective-prism survey conducted by Beers, Preston, and Shectman with the Curtis-Schmidt telescope of the Cerro Tololo Inter-American Observatory. An intrinsic (U-B)0 versus(B-V)0 relation for blue horizontal branch stars is constructed and used to derive estimates of E(B-V) color excesses in 50 survey fields. Comparison of these with the reddening maps of Burstein and Heiles indicates good agreement except in low-latitude fields toward the Galactic bulge. Qualitative features of the stellar content of the HK survey are described by use of unreddened two-color diagrams and ways in which the photometric data may prove useful in several applications are indicated. Finally, a halo density model is employed to estimate the variation of completeness with apparent magnitude, B, in the present catalog of field horizontal branch star candidates.

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