The nature of the Wolf-Rayet nebula NGC 3199

Details The nature of the Wolf-Rayet nebula NGC 3199 The nature of the Wolf-Rayet nebula NGC 3199

May 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988a%26a...196..261w&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 196, no. 1-2, May 1988, p. 261-265.

Astronomy and Astrophysics

Astrophysics

7

Stellar Coronas, Stellar Structure, Stellar Winds, Wolf-Rayet Stars, Stellar Motions, Stellar Spectra

Scientific paper

A deep print of a photograph of the Wolf-Rayet nebula NGC 3199 shows the presence of a faint outer shell forming an ellipse with dimensions 26arcmin×20arcmin. The exciting star is very asymmetrically located with respect to the centroid of this ellipse and is located near a bright nebular arc. A multiple shell structure to the whole of the nebulosity is also suggested. No high-speed knots, similar to those found previously in the comparable nebula RCW 104, are present along three slit positions of a spectrograph. The spectral observations however do clearly indicate that radiative ionization is dominant in the bright nebular arc. It is suggested that although the expected stellar wind from the WR star HD 89358 could form the larger expanding bubble of NGC 3199, there is no evidence for any localized effects of it within the bright nebular filaments.

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