On Beta Cephei Stars: a Search for Beta Cephei Stars

Abstract

view Abstract Citations (77) References (54) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS On Beta Cephei Stars: a Search for Beta Cephei Stars Hill, Graham Abstract The results of a photoelectric search for phei stars among a sample of 153 early 13 stars, found in the nearest associations and galactic clusters, are presented. This search yielded 24 new Cephei stars (including 5 tentative ones), thereby increasing the number of known Cephei stars to 41. These new observations have extended considerably the limits of spectral type, luminosity class, absolute magnitude, period, and rotational velocity for these variables. The limits now become 09.3-133 (spectral type), V-I (luminosity class), 3-10 hours (period), 0>300 km/sec (rotational velocity). An examination of the period-luminosity relation leads to the tentative conclusion that those stars with periods <Od.3 obey a p - 1 relation, but the stars with periods >0435 do not. H-R diagrams of p Cephei variables and "normal" stars for individual associations and galactic clusters show that the p Cephei stars occupy no preferred position in relation to normal stars, i.e., many of these "normal" stars are at the same stage of evolution as the p Cephei stars. Publication: The Astrophysical Journal Supplement Series Pub Date: August 1967 DOI: 10.1086/190156 Bibcode: 1967ApJS...14..263H full text sources ADS | data products SIMBAD (168)