The molecular complex associated with RCW 121 and RCW 122

Details The molecular complex associated with RCW 121 and RCW 122 The molecular complex associated with RCW 121 and RCW 122

May 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009rmxac..35...48a&link_type=abstract

XII Latin American IAU Regional Meeting (Eds. G. Magris, G. Bruzual, & L. Carigi) Revista Mexicana de Astronomía y Astrofísica (

Astronomy and Astrophysics

Astronomy

Hii Regions, Ism: Clouds

Scientific paper

The distribution of the molecular gas towards the region containing the open cluster HM 1, the Wolf-Rayet stars WR 87, WR 89, and WR 91, and the star forming regions RCW 121 and RCW 122 is analyzed with the aim of looking for a possible physical relationship among these objects. Using ^{12}CO observations carried out at λ ˜ 2.6 mm with the 4 m NANTEN radiotelescope, and adopting a distance of 5 kpc for RCW 121 and RCW 122, a giant molecular cloud (GMC) having a lineal extent of ˜ 100×20 pc is found to be associated with these galactic star-forming regions. The total mass of this GMC is of the order of 1.2×10^6 solar masses and its mean radial velocity is about -15 km s^{-1}.

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