Astronomy and Astrophysics – Astronomy
Scientific paper
May 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994aas...184.3113n&link_type=abstract
American Astronomical Society, 184th AAS Meeting, #31.13; Bulletin of the American Astronomical Society, Vol. 26, p.910
Astronomy and Astrophysics
Astronomy
Scientific paper
New high resolution echelle observations are reported of R84, R99, HDE269927c and BE381 in LMC, which were first classified as Ofpe/WN9 stars by Bohannan and Walborn (1989). Spectra in the wavelength region 4000-8000 Angstroms have been obtained with EMMI on the ESO/NTT, and display nebular [NII], [OIII] emission lines for the four LMC stars, previously unreported for HDE269927c and BE381. In the case of R99, HDE269927c and BE381 the nebular lines Hα, Hβ and [OIII] are spatially extended, suggesting the presence of a circumstellar nebula few arcsecs in size. These findings further support the evidence that a link exists between Ofpe/WN9 stars and the Luminous Blue Variables, as we had advocated in the case of the Ofpe/WN9 star S119 in the LMC. The nebulae appear to be asymmetric in the echelle spectra. Further investigation will be necessary to establish if their morphology is similar to more well known LBVS such as AG Carinae and R127.
Drissen Laurent
Leitherer Cl.
Nota Anatonella
Pasquali Anna
Robert Carmelle
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