Morphology, kinematics and stellar content of the ring nebula around the WC 6 star HD 92809 (= WR 23)

Details Morphology, kinematics and stellar content of the ring nebula around the WC 6 star HD 92809 (= WR 23) Morphology, kinematics and stellar content of the ring nebula around the WC 6 star HD 92809 (= WR 23)

Jul 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...162..265g&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 162, no. 1-2, July 1986, p. 265-278.

Astronomy and Astrophysics

Astrophysics

8

Hydrogen Clouds, Nebulae, Stellar Envelopes, Wolf-Rayet Stars, Astronomical Photography, H Alpha Line, Kinematics, Ring Structures, Star Clusters

Scientific paper

Monochromatic photographs and H-alpha interferograms were acquired of the nebulae around HD 92809 in order to model the morphology and kinematics of the northern part of the Carina Nebula. Attention was given to the excitation mechanisms active in the region, the stellar content and reddening, and the H-alpha velocity field. The study revealed two distinct features: the G 287.22 + 0.05 nebula and a nebular ring around HD 92809. The ring features optically thin filaments to one side and optically thick filaments to the opposite side. No determination could be made of the expansion velocity of the ring. The nebula G 287.22 has a uniform radial velocity of -27 km/sec, which diverges sufficiently from the Carina OB1 velocity field to lead to the hypothesis that it is associated with a second WC 6 star in the field. The location of the progenitor object for HD 92809 could not be identified.

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