ALMA ACA and Nobeyama Observations of Two Orion Cores in Deuterated Molecular Lines

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dc.contributor University of Helsinki, Department of Physics en Tatematsu, Ken'ichi Liu, Tie Kim, Gwanjeong Yi, Hee-Weon Lee, Jeong-Eun Hirano, Naomi Liu, Sheng-Yuan Ohashi, Satoshi Sanhueza, Patricio Di Francesco, James Evans, Neal J. Fuller, Gary A. Kandori, Ryo Choi, Minho Kang, Miju Feng, Siyi Hirota, Tomoya Sakai, Takeshi Lu, Xing Lu'o'ng, Quang Nguyen Thompson, Mark A. Wu, Yuefang Li, Di Kim, Kee-Tae Wang, Ke Ristorcelli, Isabelle Juvela, Mika Toth, L. Viktor 2021-06-02T22:30:09Z 2021-06-02T22:30:09Z 2020-06
dc.identifier.citation Tatematsu , K , Liu , T , Kim , G , Yi , H-W , Lee , J-E , Hirano , N , Liu , S-Y , Ohashi , S , Sanhueza , P , Di Francesco , J , Evans , N J , Fuller , G A , Kandori , R , Choi , M , Kang , M , Feng , S , Hirota , T , Sakai , T , Lu , X , Lu'o'ng , Q N , Thompson , M A , Wu , Y , Li , D , Kim , K-T , Wang , K , Ristorcelli , I , Juvela , M & Toth , L V 2020 , ' ALMA ACA and Nobeyama Observations of Two Orion Cores in Deuterated Molecular Lines ' , Astrophysical Journal , vol. 895 , no. 2 , 119 . en
dc.identifier.issn 0004-637X
dc.identifier.other PURE: 140000989
dc.identifier.other PURE UUID: 26ffd980-2341-4533-8095-415c5bdfc4ea
dc.identifier.other WOS: 000540541500001
dc.identifier.other ORCID: /0000-0002-5809-4834/work/88203021
dc.description.abstract 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. en
dc.format.extent 21
dc.language.iso eng
dc.relation.ispartof Astrophysical Journal
dc.rights en
dc.subject Star forming regions en
dc.subject Astrochemistry en
dc.subject Interstellar medium en
dc.subject Giant molecular clouds en
dc.subject Molecular clouds en
dc.subject Collapsing clouds en
dc.subject CLOUD CORES en
dc.subject DENSE CORES en
dc.subject DARK CLOUDS en
dc.subject Z-MACHINE en
dc.subject N2H+ en
dc.subject 45-M en
dc.subject GAS en
dc.subject SUBMILLIMETER en
dc.subject TEMPERATURE en
dc.subject KINEMATICS en
dc.subject 115 Astronomy, Space science en
dc.title ALMA ACA and Nobeyama Observations of Two Orion Cores in Deuterated Molecular Lines en
dc.type Article
dc.description.version Peer reviewed
dc.type.uri info:eu-repo/semantics/other
dc.type.uri info:eu-repo/semantics/acceptedVersion

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