High resolution CO observations of S88-B

Details High resolution CO observations of S88-B High resolution CO observations of S88-B

Dec 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992a%26a...266..452w&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 266, no. 1, p. 452-456.

Astronomy and Astrophysics

Astrophysics

13

Carbon Monoxide, H Ii Regions, Massive Stars, Reflection Nebulae, Star Formation, Astronomical Models, Molecular Clouds, Molecular Flow

Scientific paper

CO J = 2-1 and (C-13)O J = 2-1 and 1-0 observations have been made of the H II region S88-B, using the 15-m James Clerk Maxwell telescope in Hawaii and the 20-m telescope at Onsala. The core of the cloud is resolved into a horseshoelike structure which surrounds a diffuse reflection nebula. The central core has a mass of not less than 1000 solar masses, with 400 solar masses in the horseshoe structure. The gas in the horse in the horseshoe appears highly fragmented, and has a kinetic temperature of about 60 K, suggesting it is closely coupled to the dust temperature. A recently formed high mass star appears to be in the process of evacuating a cavity, possibly through a large molecular outflow that is found to show an accelerated component in its blue-shifted lobe. A velocity gradient across the horseshoe structure suggest ordered motion, and could represent rotation in the parental cloud.

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