Comments on the variability and physical parameters of the F supergiant Phi Cassiopeiae

Details Comments on the variability and physical parameters of the F supergiant Phi Cassiopeiae Comments on the variability and physical parameters of the F supergiant Phi Cassiopeiae

Aug 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988pasp..100..993a&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 100, Aug. 1988, p. 993-998.

Astronomy and Astrophysics

Astronomy

4

Cassiopeia Constellation, F Stars, Supergiant Stars, Variability, Variable Stars, Astronomical Photometry, Radial Velocity, Ubv Spectra

Scientific paper

UBVRI and uvby photometry and radial velocities have been obtained for the F0 Ia supergiant Phi Cas. The variability is confirmed from the radial velocities; the velocity range is small (Delta Vr of about 6 km/s). No indication is found of strict periods longer than 15 days. The physical parameters Te = 7300 K + or - 300 K, R = 245 + or - 45 solar radii, and log g = 0.9 + or - 0.2 are estimated.

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