The nature of the nebula associated with the luminous blue variable star WRA 751

Details The nature of the nebula associated with the luminous blue variable star WRA 751 The nature of the nebula associated with the luminous blue variable star WRA 751

Nov 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26a...251..620h&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 251, no. 2, Nov. 1991, p. 620-624.

Astronomy and Astrophysics

Astrophysics

27

Blue Stars, H Ii Regions, Nebulae, Stellar Luminosity, Variable Stars, Forbidden Transitions, H Alpha Line, Nitrogen Ions, Oxygen Spectra, Stellar Mass Ejection, Supergiant Stars

Scientific paper

Narrow-band filter imagery as well as medium to high resolution spectroscopy of the nebula surrounding the luminous blue variable (LBV) star WRA 751 are presented. The nebula appears as a slowly expanding H II region of low excitation characterized by a significant N/O overabundance which may be due to the presence in the nebula of nuclear processed material ejected by the star. With the recent discovery of a nebula around HR Car, all but one known galactic LBVs are now shown to be associated with a nebula. These nebula have rather similar physical characteristics, one of the most important being that all of them apparently contain processed material.

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