Lambda Pavonis

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Lambda Pavonis
Observation data
Epoch J2000.0      Equinox J2000.0 (ICRS)
Constellation Pavo
Right ascension 18h 52m 13.03427s [1]
Declination −62° 11′ 15.3324″ [1]
Spectral type B2II–IIIe [1]

Lambda Pavonis (λ Pav), also known as HD 173948 or HIP 92609, is a star in the constellation Pavo. Its apparent magnitude is 4.21. It is a Be star,[1] a rapidly rotating hot blue star which has developed a gas disk around it. It is a member of the Scorpius-Centaurus Association.[2] It is a Gamma Cassiopeae variable or shell star which has brightened to magnitude 4.0.[3]

Variations in signals coming from Lambda Pavonis have led to debate on whether it is a binary, single or pulsating variable star.[2]

References[edit]

  1. ^ a b c d SIMBAD, Lambda Pavonis (accessed 6 January 2013)
  2. ^ a b R.S. Levenhagen, N. V. Leister, R. Künzel (2011). "Spectroscopic variabilities in λ Pavonis". Astronomy & Astrophysics 533: 75–75. Bibcode:2011A&A...533A..75L. doi:10.1051/0004-6361/201116590. 
  3. ^ "lam Pav". The International Variable Star Index. American Association of Variable Star Observers (AAVSO). 4 January 2010. Retrieved 11 January 2013.