BP Circini

From Wikipedia, the free encyclopedia
Jump to: navigation, search
BP Circini
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Circinus
Right ascension 14h 46m 41.97980s [1]
Declination −61° 27′ 42.9906″ [1]

BP Circini is a star in the constellation Circinus. A Cepheid variable, its apparent magnitude ranges from 7.37 to 7.71 over 2.4 days.[2] It is a yellow-white supergiant of spectral type F2 or F3II.[1] A spectroscopic binary, it has a 4.7 solar mass (M) companion that is a blue-white star of spectral type B6.[3]

References[edit]

  1. ^ a b c d "BP Circini". SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Retrieved 24 January 2014. 
  2. ^ BSJ (30 November 2013). "BP Circini". AAVSO Website. American Association of Variable Star Observers. Retrieved 24 January 2014. 
  3. ^ Evans, Nancy Remage; Bond, Howard E.; Schaefer, Gail H.; Mason, Brian D.; Karovska, Margarita; Tingle, Evan (2013). "Binary Cepheids: Separations and Mass Ratios in 5M ⊙ Binaries". Astronomical Journal 146 (4): 93, 10 pp. arXiv:1307.7123v1. doi:10.1088/0004-6256/146/4/93.