A search for light variations in F- and G-type supergiants

Details A search for light variations in F- and G-type supergiants A search for light variations in F- and G-type supergiants

Jun 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979pasp...91..368p&link_type=abstract

Astronomical Society of the Pacific, Publications, vol. 91, June-July 1979, p. 368-371. Research supported by the National Rese

Astronomy and Astrophysics

Astronomy

38

Astronomical Photometry, Cepheid Variables, F Stars, G Stars, Stellar Luminosity, Supergiant Stars, Amplitudes, Astronomical Catalogs, Light Curve, Phase Deviation, Semiregular Variable Stars

Scientific paper

A search for and study of light variations in 18 supergiants have been carried out. The known semiregular variable 89 Her has been observed over two seasons, and a new time of maximum for the known small-amplitude cepheid HR 8157 has been obtained. A new small-amplitude cepheid HR 7308 has been discovered, which has a period of three days and a range of 0.24 m in V. A few observations of the radio-emitting supergiant HR 8752 have been obtained, but the interpretation is complicated by variability of the comparison stars.

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