TY - JOUR
T1 - A new luminous blue variable in M31
AU - Humphreys, Roberta M
AU - Martin, John C.
AU - Gordon, Michael S.
N1 - Publisher Copyright:
© 2015. The Astronomical Society of the Pacific. All rights reserved.
PY - 2015
Y1 - 2015
N2 - We report the fifth confirmed Luminous Blue Variable/S Doradus variable in M31. In 2006, J004526.62+415006.3 had the spectrum of hot Fe II emission line star with strong P Cygni profiles in the Balmer lines. In 2010, its absorption line spectrum resembled an early A-type supergiant with H and Fe II emission lines with strong P Cygni profiles, and in 2013, the spectrum had fully transitioned to an F-type supergiant due to the formation of the optically thick, cool wind which characterizes LBVs at maximum light. The photometric record supports the LBV/S Doradus nature of the variability. Its bolometric luminosity of ∼ – 9:65 mag places it on the H–R diagram near the known LBVs, AE And, Var C in M33, and S Dor.
AB - We report the fifth confirmed Luminous Blue Variable/S Doradus variable in M31. In 2006, J004526.62+415006.3 had the spectrum of hot Fe II emission line star with strong P Cygni profiles in the Balmer lines. In 2010, its absorption line spectrum resembled an early A-type supergiant with H and Fe II emission lines with strong P Cygni profiles, and in 2013, the spectrum had fully transitioned to an F-type supergiant due to the formation of the optically thick, cool wind which characterizes LBVs at maximum light. The photometric record supports the LBV/S Doradus nature of the variability. Its bolometric luminosity of ∼ – 9:65 mag places it on the H–R diagram near the known LBVs, AE And, Var C in M33, and S Dor.
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U2 - 10.1086/681013
DO - 10.1086/681013
M3 - Article
AN - SCOPUS:84926375842
VL - 127
SP - 347
EP - 350
JO - Publications of the Astronomical Society of the Pacific
JF - Publications of the Astronomical Society of the Pacific
SN - 0004-6280
IS - 950
ER -