Southern metal-poor stars - UBVRI photometry

Details Southern metal-poor stars - UBVRI photometry Southern metal-poor stars - UBVRI photometry

Jan 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980aj.....85...38c&link_type=abstract

Astronomical Journal, vol. 85, Jan. 1980, p. 38-43.

Astronomy and Astrophysics

Astronomy

37

B Stars, Stellar Spectra, Stellar Spectrophotometry, Ubv Spectra, Astronomical Catalogs, Far Fields, Giant Stars, Radial Velocity, Spectroscopic Analysis, Stellar Motions

Scientific paper

Considering the study of subdwarf kinematics and metallicities by Eggen, Lynden-Bell, and Sandage (1962), UBVRI photometry and normalized ultraviolet excesses are presented for 178 metal-poor stars, 144 of which are contained in the kinematically unbiased list of Bidelman and MacConnell (1973). The Lowell 0.6 m telescope at Cerro Tololo was used, equipped with a single-channel photometer and a Ga-As photomultiplier. The final magnitudes and colors, number of observations, value of delta(U-B)0.6 (if B-V lies between 0.35 and 0.90), B and M class, and published spectral types for these stars are presented; several extremely metal-poor stars are evident. In addition, sixteen nearby visual companions of the stars were measured, and their magnitudes and colors are given.

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