We present a study of the beta Cephei instability strip based on a sample of 49 stars of this type. After deriving their effective temperatures and luminosities from their observed (B - V), (U - B) colors and parallaxes we find their positions in the HR diagram to be mostly confined to the main sequence, and their masses to lie between 7M(circle dot) and 30 M-circle dot. Their distribution on the HR diagram matches well with our previous theoretical instability strip which has an upper bound in the luminosity and rather tight boundaries in the effective temperature.
1.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 2.Chinese Acad Sci, Purple Mtn Observ, Nanjing 210008, Peoples R China 3.Nanjing Univ, Dept Astron, Nanjing 210093, Peoples R China 4.CAS PKU Joint Beijing Astrophys Ctr, BAC, Beijing 100871, Peoples R China
Recommended Citation:
Tian, B; Men, H; Deng, LC; Xiong, DR; Cao, HL.Statistics of the instability strip of beta Cephei stars,CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,2003,3(2):125-132
