Molecular gas associated with the IRAS-Vela shell.

Details Molecular gas associated with the IRAS-Vela shell. Molecular gas associated with the IRAS-Vela shell.

Dec 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998japa...19...79r&link_type=abstract

Journal of Astrophysics and Astronomy, Vol. 19, No. 3 - 4, p. 79 - 96

Astronomy and Astrophysics

Astrophysics

4

Molecular Clouds: Carbon Monoxide, Molecular Clouds: Kinematics, Molecular Clouds: Morphology

Scientific paper

The authors present a survey of molecular gas in the J = 1→0 transition of 12CO towards the IRAS Vela Shell. The shell, previously identified from IRAS maps, is a ring-like structure seen in the region of the Gum Nebula. The authors confirm the presence of molecular gas associated with some of the infrared point sources seen along the shell. They have studied the morphology and kinematics of the gas and conclude that the shell is expanding at the rate of ≡13 km s-1 from a common center. The authors go on to include in this study the Southern Dark Clouds seen in the region. The distribution and motion of these objects firmly identify them as being part of the shell of molecular gas. Estimates of the mass of gas involved in this expansion reveal that the shell is a massive object comparable to a GMC.

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