UBVRI photometry of HR 7308

Details UBVRI photometry of HR 7308 UBVRI photometry of HR 7308

Jun 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982pasp...94..537f&link_type=abstract

Astronomical Society of the Pacific, Publications, vol. 94, June-July 1982, p. 537-540. Research supported by the Natural Scien

Astronomy and Astrophysics

Astronomy

16

Astronomical Photometry, Cepheid Variables, Ubv Spectra, Brightness, Interstellar Extinction, Stellar Color, Stellar Spectrophotometry

Scientific paper

The star HR7308 (HD180583) is the shortest-period classical Cepheid known. It is also unique (so far as it is currently known) in having a variable amplitude. A description is presented of UBVRI photometry (all on the Johnson system) of HR7308 obtained during the second half of 1981. The data are used to derive interstellar reddening and, by application of the surface brightness technique of Barnes et al. (1977), to derive a distance, radius, and absolute magnitude for the star. All observations reported were obtained with a 0.5-m reflector equipped with a standard photon-counting photometer.

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