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TWO MOLECULAR CLOUDS WITH ANOMALOUS VELOCITIES IN THE GALACTIC ANTICENTER KCI 등재 SCOPUS

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  • URLhttps://db.koreascholar.com/Article/Detail/398285
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천문학회지 (Journal of The Korean Astronomical Society)
한국천문학회 (Korean Astronomical Society)
초록

We map two molecular clouds located in the exact anticenter region emitting in the (J = 1-0) transition of 12CO and 13CO using the 3-mm SIS mixer receiver on the 14-m radio telescope at Taeduk Radio Astronomy Observatory. The target clouds with anomalous velocities of VLSR ~ - 20 km s-1 are distinguished from other clouds in this direction. In addition, they are located in the interarm region between the Orion Arm and the Perseus Arm. Sizes of the clouds are estimated to be about 8.6 and 10.8 pc, respectively. The total mass is estimated to be about 4 x 103 M⊙ using CO luminosity of the clouds. Several cores are detected, but no sign of star formation is found according to the IRAS point sources. Their larger linewidths, anomalous velocities, and their location at the interarm region make these clouds more distinguished, though their physical properties are similar to the dark clouds in the solar neighborhood in terms of mass and size.

저자
  • Youngung Lee(Korea Astronomy and Space Science Institute, 776 Daedukdae-ro, Yuseong)
  • Young Sik Kim(Korea Astronomy and Space Science Institute, 776 Daedukdae-ro, Yuseong/Department of Space and Astronomy, Chungnam National University)
  • Hyung-Goo Kim(Korea Astronomy and Space Science Institute, 776 Daedukdae-ro, Yuseong)
  • Jae-Hoon Jung(Korea Astronomy and Space Science Institute, 776 Daedukdae-ro, Yuseong)
  • In-Sung Yim(Korea Astronomy and Space Science Institute, 776 Daedukdae-ro, Yuseong)
  • Hyunwoo Kang(Korea Astronomy and Space Science Institute, 776 Daedukdae-ro, Yuseong)
  • Changhoon Lee(Korea Astronomy and Space Science Institute, 776 Daedukdae-ro, Yuseong)
  • Bong-Gyu Kim(Korea Astronomy and Space Science Institute, 776 Daedukdae-ro, Yuseong)
  • Kwang-Tae Kim(Department of Space and Astronomy, Chungnam National University)