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- W2058366924 abstract "view Abstract Citations (62) References (21) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Sudden Luminous Blue Variable--Like Behavior of the Wolf-Rayet Binary System HD 5980 in the Small Magellanic Cloud Barba, Rodolfo H. ; Niemela, Virpi S. ; Baume, Gustavo ; Vazquez, R. A. Abstract We report a sudden outburst-like behavior of the WR binary system HD 5980 in the SMC, as disclosed by spectroscopic and photometric observations performed in 1994 October and November. Our spectra show that the WR type spectrum of HD 5980 has changed drastically, now exhibiting a luminous blue variable (LBV) type spectrum with strong emission of H I and He I with P Cyg profiles and weaker emissions of N II, Si II, Si III, and Fe III. The previously dominant He II 4686 ÅA emission has remarkably weakened and other WR type emission lines have disappeared. Our photometry of HD 5980 reveals a visual brightening of 2.3 mag. The behavior shown by HD 5980, i.e., the transformation of a WNE star in a sort of LBV star, is unprecedented. Publication: The Astrophysical Journal Pub Date: June 1995 DOI: 10.1086/187921 Bibcode: 1995ApJ...446L..23B Keywords: STARS: BINARIES: CLOSE; STARS: INDIVIDUAL HENRY DRAPER NUMBER: HD 60435; STARS: VARIABLES: OTHER LUMINOUS BLUE VARIABLES; STARS: WOLF-RAYET full text sources ADS | data products SIMBAD (8) NED (1)" @default.
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- W2058366924 date "1995-06-01" @default.
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- W2058366924 title "Sudden Luminous Blue Variable--Like Behavior of the Wolf-Rayet Binary System HD 5980 in the Small Magellanic Cloud" @default.
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