Nobeyama 45-m mapping observations toward nearby molecular clouds, Orion A, Aquila Rift, and M17: Project overview
Fumitaka Nakamura (NAOJ), Shun Ishii (NAOJ/JAO), Kazuhito Dobashi, (Tokyo Gakugei Univ.), Tomomi Shimoikura (Otsuma Women Univ.), Yoshito, Shimajiri (Kagoshima/NAOJ), Ryohei Kawabe (NAOJ), Yoshihiro Tanabe (Ibaraki, Univ.), Asha Hirose (Tokyo Gakugei Univ.)

TL;DR
This paper presents detailed mapping observations of three nearby molecular clouds using the Nobeyama 45-m telescope with the FOREST receiver, covering multiple molecular lines to study their structure, mass, and star formation activity.
Contribution
It provides comprehensive data on molecular cloud properties, including mass and star formation thresholds, with new outflow candidates identified in the Aquila Rift.
Findings
Molecular masses of clouds are quantified, e.g., Orion A: 3.86×10^4 M_sun.
Regions with high-mass star formation exceed the column density threshold.
Four new molecular outflow candidates identified in Aquila Rift.
Abstract
We carried out mapping observations toward three nearby molecular clouds, Orion A, Aquila Rift, and M17, using a new 100 GHz receiver, FOREST, on the Nobeyama 45-m telescope. In the present paper, we describe the details of the data obtained such as intensity calibration, data sensitivity, angular resolution, and velocity resolution. Each target contains at least one high-mass star-forming region. The target molecular lines were CO (), CO (), CO (), NH (), and CCS (), with which we covered the density range of 10 cm to 10 cm with an angular resolution of and a velocity resolution of 0.1 km s. Assuming the representative distances of 414 pc, 436 pc, and 2.1 kpc, the maps of Orion A, Aquila Rift, and M17 cover most of the densest parts with areas of about…
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