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Paper: A Large Scale CO Survey Toward the Orion-Eridanus Region with NANTEN
Volume: 287, Galactic Star Formation Across the Stellar Mass Spectrum
Page: 47
Authors: Mizuno, N.; Aoyama, H.; Onishi, T.; Mizuno, A.; Fukui, Y.
Abstract: We present the new wide-field, high spatial and velocity resolution map of the entire CO distribution of the Orion molecular cloud complex and Eridanus loop. The observations were carried out with the NANTEN 4-m radio telescope at Las Campanas Observatory. The survey covered 615 square degrees at a 4' grid spacing, and the total molecular mass in the observed area is estimated to be 2.3 × 105 M . More than 50% of the total mass is concentrated in and around the previously known Orion A and B giant molecular clouds. We found many small clouds with masses of a few M . They are distributed away from OB stars, and some of them show a ring-shaped structure surrounding OB stars. We also detected cometary-shaped clouds located at the higher Galactic latitude.
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