Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 1979
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979ap%26ss..66..191s&link_type=abstract
Astrophysics and Space Science, vol. 66, no. 1, Nov. 1979, p. 191-199.
Astronomy and Astrophysics
Astrophysics
6
B Stars, Early Stars, O Stars, Ring Structures, Star Formation, Supernova Remnants, Galactic Clusters, H Ii Regions, Radial Velocity, Stellar Magnitude, Stellar Spectra, Supernovae
Scientific paper
The paper examines evidence for supernova-induced star formation in the Monoceros OB2 association. The Monoceros ring, a circular optical nebulosity, is in good structural agreement with radio observations. A neutral hydrogen shell is also accurately projected on the ring, which is consistent with the Monoceros ring being a supernova remnant 90-100 pc in diameter, expanding at 45 km/s, and having an age of the order of a million years. Bright H II regions containing early-type stars and extremely young stars of the OB association Mon OB2 lie at the edges of the ring. The positional and temporal coincidence of the Mon OB2 association with a supernova remnant suggests that probably the star formation in this region is induced or speeded up by the passage of a supernova shock wave through the clumpy interstellar medium.
Naranan S.
Singh Kamal P.
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