Molecular Clouds Toward a New OB Association in Pup-CMa

Details Molecular Clouds Toward a New OB Association in Pup-CMa Molecular Clouds Toward a New OB Association in Pup-CMa

Oct 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005ap.....48..411m&link_type=abstract

Astrophysics, Volume 48, Issue 4, pp.411-421

Astronomy and Astrophysics

Astrophysics

1

Ism: Clouds, Ism: Molecules, Galaxy: General, Radio Lines, Ism: Clouds - Ism: Molecules - Galaxy: General - Radio Lines

Scientific paper

We have mapped 16 molecular clouds toward a new OB association in the Pup-CMa region to derive their physical properties. The observations were carried out in the 12CO (J = 1 0) line with the Southern millimetre-wave Telescope at Cerro Tololo, Chile. Distances have been determined kinematically using the rotation curve of Brand with R&sun; = 8.5 kpc and V&sun; = 220 km/s. Masses have been derived adopting a CO luminosity to H2 conversion factor X = 3.8 . 1020 molecules cm-2 (K km/s)-1. The observed mean radial velocity of the clouds is comparable with the mean radial velocity of stars composing an OB association in Pup-CMa; it is in favor of the close connection of clouds with these stars.

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