S119: a new Luminous Blue Variable?

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Session 63 -- Intrinsic and Cataclysmic Variables
Display presentation, Thursday, 9:20-4:00, Heller Lounge Room

[63.07] S119: a new Luminous Blue Variable?

A.Nota (STSCI/ESA), C.Leitherer (STSCI), M.Clampin (STSCI), L.Drissen (STSCI), A.Pasquali (University of Florence), C.Robert (STSCI), M.Robberto (Observatory of Turin)

New observations are reported of S119 in the Large Magellanic Cloud. S119 was first spectroscopically classified as an Ofpe/WN9 star by Bohannan and Walborn (1989). High resolution echelle spectra [4000 - 8000 \AA] obtained with ESO/NTT show the presence of bright asymmetric nebular lines, indicating an extended circumstellar nebula expanding at a velocity of approximately 25 km/sec. High resolution coronographic observations taken with the NTT in excellent seeing condition in the light of the nebular line [NII] and H$\alpha$ resolve, for the first time, the nebula. An asymmetric shell with a bright bipolar structure is clearly visible, extending along the NE-SW direction. The S119 nebula shows a strong resemblance to the nebulae around two well known Luminous Blue Variables: the AG Carinae in the MW and R127 in the Large Magellanic Cloud, thus providing further evidence for an evolutionary link between Ofpe/WN9 stars and the category of Luminous Blue Variables.

Thursday program listing