HR 7308 - A unique Cepheid

Details HR 7308 - A unique Cepheid HR 7308 - A unique Cepheid

Nov 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980aj.....85.1509p&link_type=abstract

Astronomical Journal, vol. 85, Nov. 1980, p. 1509-1512. Research supported by the Natural Sciences and Engineering Research Cou

Astronomy and Astrophysics

Astronomy

24

Cepheid Variables, Hertzsprung-Russell Diagram, Radial Velocity, Stellar Spectrophotometry, Abundance

Scientific paper

Forty-four photometric observations and nine radial velocities of the F6I-IIb star HR7308 were obtained. The spectral type, the period, and the relative range and phase of light, color, and velocity variations suggest that the star is a small-amplitude Cepheid. The metal abundance appears to be normal. However, the light amplitude decreased slowly during 1978 and increased slightly during 1979. Such behavior is unprecedented in a Population I Cepheid.

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