A photometric study of BL Herculis

Details A photometric study of BL Herculis A photometric study of BL Herculis

Jul 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987pasp...99..645a&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 99, July 1987, p. 645-653. NSF-supported research.

Astronomy and Astrophysics

Astronomy

7

Stellar Spectrophotometry, Ubv Spectra, Variable Stars, Abundance, Interstellar Extinction, Radial Velocity, Radiant Flux Density, Radii, Stellar Temperature

Scientific paper

Photometric observations of the prototype variable BL Her are described. The reddening, metallicity, temperature, and surface gravity of the star are determined. A Baade-Wesselink analysis is made to determine the radius and distance to the variable. The mass of the star is determined to be 0.75 solar, placing it in the range of RR Lyrae variables. The metallicity of +0.20, however, is greater than that of any known RR Lyrae variable.

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