Observations of the shell nebula NGC 3199

Details Observations of the shell nebula NGC 3199 Observations of the shell nebula NGC 3199

Sep 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974a%26a....34..465d&link_type=abstract

Astronomy and Astrophysics, vol. 34, no. 3, Sept. 1974, p. 465-469.

Astronomy and Astrophysics

Astrophysics

11

Forbidden Transitions, H Alpha Line, Hot Stars, Interstellar Gas, Nebulae, Radial Velocity, Galactic Structure, Hydrogen Clouds, Stellar Mass Ejection, Wolf-Rayet Stars

Scientific paper

Monochromatic photographs in H alpha and forbidden N II 6584 A of the shell nebula NGC 3199 are presented. Interferometric H alpha radial velocities in this nebula show an expansion of 30 km/sec around the exciting Wolf-Rayet star. The observations are interpreted as indicating ejection of material from a central Wolf-Rayet star against the interstellar gas. This nebula is compared with NGC 6888, and NGC 2359, for which a similar interpretation has been made. The physical parameters of NGC 3199 and its exciting Wolf-Rayet star are deduced.

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