NAOC Open IR
ALMA ACA and Nobeyama Observations of Two Orion Cores in Deuterated Molecular Lines
Tatematsu,Ken’ichi1,2; Liu,Tie3,4,5; Kim,Gwanjeong1; Yi,Hee-Weon6; Lee,Jeong-Eun6; Hirano,Naomi7; Liu,Sheng-Yuan7; Ohashi,Satoshi8; Sanhueza,Patricio2,9; Francesco,James Di10,11; Evans II,Neal J.12; Fuller,Gary A.13; Kandori,Ryo9; Choi,Minho4; Kang,Miju4; Feng,Siyi9,14; Hirota,Tomoya2,9; Sakai,Takeshi15; Lu,Xing9; Lu’o’ng,Quang Nguyên4,9,16,17; Thompson,Mark A.18; Wu,Yuefang19; Li,Di20; Kim,Kee-Tae4,25; Wang,Ke14,21; Ristorcelli,Isabelle22; Juvela,Mika23; Tóth,L. Viktor24
2020-06-01
Source PublicationThe Astrophysical Journal
ISSN0004-637X
Volume895Issue:2
AbstractAbstract We mapped two molecular cloud cores in the Orion A cloud with the 7 m Array of the Atacama Compact Array (ACA) of the Atacama Large Millimeter/submillimeterArray (ALMA) and with the Nobeyama 45 m radio telescope. These cores have bright N2D+ emission in single-pointing observations with the Nobeyama 45 m radio telescope, have a relatively high deuterium fraction, and are thought to be close to the onset of star formation. One is a star-forming core, and the other is starless. These cores are located along filaments observed in N2H+ and show narrow line widths of 0.41 km s?1 and 0.45 km s?1 in N2D+, respectively, with the Nobeyama 45 m telescope. Both cores were detected with the ALMA ACA 7 m Array in the continuum and molecular lines at Band 6. The starless core G211 shows a clumpy structure with several sub-cores, which in turn show chemical differences. Also, the sub-cores in G211 have internal motions that are almost purely thermal. The starless sub-core G211D, in particular, shows a hint of the inverse P Cygni profile, suggesting infall motion. The star-forming core G210 shows an interesting spatial feature of two N2D+ peaks of similar intensity and radial velocity located symmetrically with respect to the single dust continuum peak. One interpretation is that the two N2D+ peaks represent an edge-on pseudo-disk. The CO outflow lobes, however, are not directed perpendicular to the line connecting both N2D+ peaks.
KeywordStar forming regions Astrochemistry Interstellar medium Giant molecular clouds Molecular clouds Collapsing clouds
DOI10.3847/1538-4357/ab8d3e
Language英语
WOS IDIOP:0004-637X-895-2-ab8d3e
PublisherThe American Astronomical Society
Citation statistics
Document Type期刊论文
Identifierhttp://ir.bao.ac.cn/handle/114a11/63423
Collection中国科学院国家天文台
Affiliation1.Nobeyama Radio Observatory, National Astronomical Observatory of Japan, National Institutes of Natural Sciences, 462-2 Nobeyama, Minamimaki, Minamisaku, Nagano 384-1305, Japan; k.tatematsu@nao.ac.jp
2.Department of Astronomical Science, SOKENDAI (The Graduate University for Advanced Studies), 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan
3.Key Laboratory for Research in Galaxies and Cosmology, Shanghai Astronomical Observatory, Chinese Academy of Sciences, 80 Nandan Road, Shanghai 200030, People’s Republic of China
4.Korea Astronomy and Space Science Institute, Daedeokdaero 776, Yuseong, Daejeon 305-348, Republic of Korea
5.East Asian Observatory, 660 N. A’ohoku Place, Hilo, HI 96720, USA
6.School of Space Research, Kyung Hee University, Seocheon-Dong, Giheung-Gu, Yongin-Si, Gyeonggi-Do, 446-701, Republic of Korea
7.Academia Sinica Institute of Astronomy and Astrophysics, 11F of Astronomy-Mathematics Building, AS/NTU. No.1, Sec. 4, Roosevelt Rd, Taipei 10617, Taiwan, R.O.C.
8.The Institute of Physical and Chemical Research (RIKEN), 2-1, Hirosawa, Wako-shi, Saitama 351-0198, Japan
9.National Astronomical Observatory of Japan, National Institutes of Natural Sciences, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan
10.Herzberg Astronomy & Astrophysics, National Research Council of Canada, 5071 West Saanich Road, Victoria, BC V9E 2E7, Canada
11.Department of Physics and Astronomy, University of Victoria, Victoria, BC V8W 2Y2, Canada
12.Department of Astronomy, The University of Texas at Austin, 2515 Speedway, Stop C1400, Austin, TX 78712?1205, USA
13.Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
14.The Kavli Institute for Astronomy and Astrophysics, Peking University, 5 Yiheyuan Road, Haidian District, Beijing 100871, People’s Republic of China
15.Graduate School of Informatics and Engineering, The University of Electro-Communications, Chofu, Tokyo 182-8585, Japan
16.McMaster University, 1 James Street North, Hamilton, ON, L8P 1A2, Canada
17.IBM, Canada
18.Centre for Astrophysics Research, Science & Technology Research Institute, University of Hertfordshire, Hatfield, AL10 9AB, UK
19.Department of Astronomy, Peking University, 100871, Beijing, People’s Republic of China
20.National Astronomical Observatories, Chinese Academy of Sciences, Beijing, 100012, People’s Republic of China
21.European Southern Observatory, Karl-Schwarzschild-Str. 2 D-85748 Garching bei München, Germany
22.RAP, CNRS (UMR5277), Université Paul Sabatier, 9 avenue du Colonel Roche, BP 44346, F-31028, Toulouse Cedex 4, France
23.Department of Physics, P.O. Box 64, FI-00014, University of Helsinki, Finland
24.Department of Astronomy, E?tv?s Loránd Unviersity, Pázmány Péter sétány 1/A, H-1117 Budapest, Hungary
25.University of Science and Technology, Korea (UST), 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea
Recommended Citation
GB/T 7714
Tatematsu,Ken’ichi,Liu,Tie,Kim,Gwanjeong,et al. ALMA ACA and Nobeyama Observations of Two Orion Cores in Deuterated Molecular Lines[J]. The Astrophysical Journal,2020,895(2).
APA Tatematsu,Ken’ichi.,Liu,Tie.,Kim,Gwanjeong.,Yi,Hee-Weon.,Lee,Jeong-Eun.,...&Tóth,L. Viktor.(2020).ALMA ACA and Nobeyama Observations of Two Orion Cores in Deuterated Molecular Lines.The Astrophysical Journal,895(2).
MLA Tatematsu,Ken’ichi,et al."ALMA ACA and Nobeyama Observations of Two Orion Cores in Deuterated Molecular Lines".The Astrophysical Journal 895.2(2020).
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