TY - JOUR
T1 - A Massive Molecular Outflow in the Dense Dust Core AGAL G337.916-00.477
AU - Torii, Kazufumi
AU - Hattori, Yusuke
AU - Hasegawa, Keisuke
AU - Ohama, Akio
AU - Yamamoto, Hiroaki
AU - Tachihara, Kengo
AU - Tokuda, Kazuki
AU - Onishi, Toshikazu
AU - Hattori, Yasuki
AU - Ishihara, Daisuke
AU - Kaneda, Hidehiro
AU - Fukui, Yasuo
N1 - Funding Information:
This work was financially supported by Grants-in-Aid for Scientific Research (KAKENHI) of the Japanese Society for the Promotion of Science (JSPS; grant numbers 15H05694, 15K17607, 24224005, 26247026, 25287035, and 23540277). Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA. This work is based in part on observations made with the Spitzer Space Telescope, which is operated by the Jet Propulsion Laboratory, California Institute of Technology under a contract with NASA. This research is also based on observations with AKARI, a JAXA project with the participation of ESA. This publication makes use of data products from the Two Micron All Sky Survey, which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center/California Institute of Technology, funded by the National Aeronautics and Space Administration and the National Science Foundation.
Publisher Copyright:
© 2017. The American Astronomical Society. All rights reserved.
PY - 2017/5/10
Y1 - 2017/5/10
N2 - Massive molecular outflows erupting from high-mass young stellar objects (YSOs) provide important clues to understanding the mechanism of high-mass star formation. Based on new CO J = 3-2 and J = 1-0 observations using the Atacama Submillimeter Telescope Experiment (ASTE) and Mopra telescope facilities, we discovered a massive bipolar outflow associated with the dense dust core AGAL G337.916-00.477 (AGAL337.9-S), located 3.48 kpc from the Sun. The outflow lobes have extensions of less than 1 pc - and thus were not fully resolved in the angular resolutions of ASTE and Mopra - and masses of ∼50 M⊙. The maximum velocities of the outflow lobes are as high as 36-40km s-1. Our analysis of the infrared and submillimeter data indicates that AGAL337.9-S is in an early evolutionary stage of high-mass star formation, having the total far-infrared luminosity of ∼5 × 104 L⊙. We also found that another dust core, AGAL G337.922-00.456 (AGAL337.9-N), located 2′ north of AGAL337.9-S, is a high-mass YSO in an earlier evolutionary stage than AGAL337.9-S, as it is less bright in the mid-infrared than AGAL337.9-S.
AB - Massive molecular outflows erupting from high-mass young stellar objects (YSOs) provide important clues to understanding the mechanism of high-mass star formation. Based on new CO J = 3-2 and J = 1-0 observations using the Atacama Submillimeter Telescope Experiment (ASTE) and Mopra telescope facilities, we discovered a massive bipolar outflow associated with the dense dust core AGAL G337.916-00.477 (AGAL337.9-S), located 3.48 kpc from the Sun. The outflow lobes have extensions of less than 1 pc - and thus were not fully resolved in the angular resolutions of ASTE and Mopra - and masses of ∼50 M⊙. The maximum velocities of the outflow lobes are as high as 36-40km s-1. Our analysis of the infrared and submillimeter data indicates that AGAL337.9-S is in an early evolutionary stage of high-mass star formation, having the total far-infrared luminosity of ∼5 × 104 L⊙. We also found that another dust core, AGAL G337.922-00.456 (AGAL337.9-N), located 2′ north of AGAL337.9-S, is a high-mass YSO in an earlier evolutionary stage than AGAL337.9-S, as it is less bright in the mid-infrared than AGAL337.9-S.
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U2 - 10.3847/1538-4357/aa6fa8
DO - 10.3847/1538-4357/aa6fa8
M3 - Article
AN - SCOPUS:85019931054
SN - 0004-637X
VL - 840
JO - Astrophysical Journal
JF - Astrophysical Journal
IS - 2
M1 - 111
ER -