ALMA Survey of Orion Planck Galactic Cold Clumps (ALMASOP). I. Detection of New Hot Corinos with the ACA

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Hsu , S-Y , Liu , S-Y , Liu , T , Sahu , D , Hirano , N , Lee , C-F , Tatematsu , K , Kim , G , Juvela , M , Sanhueza , P , He , J , Johnstone , D , Qin , S-L , Bronfman , L , Chen , H-R V , Dutta , S , Eden , D J , Jhan , K-S , Kim , K-T , Kuan , Y-J , Kwon , W , Lee , C W , Lee , J-E , Moraghan , A , Rawlings , M G , Shang , H , Soam , A , Thompson , M A , Traficante , A , Wu , Y , Yang , Y-L & Zhang , Q 2020 , ' ALMA Survey of Orion Planck Galactic Cold Clumps (ALMASOP). I. Detection of New Hot Corinos with the ACA ' , Astrophysical Journal , vol. 898 , no. 2 , 107 . https://doi.org/10.3847/1538-4357/ab9f3a

Title: ALMA Survey of Orion Planck Galactic Cold Clumps (ALMASOP). I. Detection of New Hot Corinos with the ACA
Author: Hsu, Shih-Ying; Liu, Sheng-Yuan; Liu, Tie; Sahu, Dipen; Hirano, Naomi; Lee, Chin-Fei; Tatematsu, Ken'ichi; Kim, Gwanjeong; Juvela, Mika; Sanhueza, Patricio; He, Jinhua; Johnstone, Doug; Qin, Sheng-Li; Bronfman, Leonardo; Chen, Huei-Ru Vivien; Dutta, Somnath; Eden, David J.; Jhan, Kai-Syun; Kim, Kee-Tae; Kuan, Yi-Jehng; Kwon, Woojin; Lee, Chang Won; Lee, Jeong-Eun; Moraghan, Anthony; Rawlings, M. G.; Shang, Hsien; Soam, Archana; Thompson, M. A.; Traficante, Alessio; Wu, Yuefang; Yang, Yao-Lun; Zhang, Qizhou
Contributor: University of Helsinki, Department of Physics
Date: 2020-08
Language: eng
Number of pages: 36
Belongs to series: Astrophysical Journal
ISSN: 0004-637X
URI: http://hdl.handle.net/10138/332657
Abstract: We report the detection of four new hot corino sources, G211.47-19.27S, G208.68-19.20N1, G210.49-19.79W, and G192.12-11.10, from a survey study of Planck Galactic Cold Clumps in the Orion Molecular Cloud Complex with the Atacama Compact Array. Three sources had been identified as low-mass Class 0 protostars in the Herschel Orion Protostar Survey. One source in the lambda Orionis region is first reported as a protostellar core. We have observed abundant complex organic molecules (COMs), primarily methanol but also other oxygen-bearing COMs (in G211.47-19.27S and G208.68-19.20N1) and the molecule of prebiotic interest NH2CHO (in G211.47-19.27S), signifying the presence of hot corinos. While our spatial resolution is not sufficient to resolve most of the molecular emission structure, the large line width and high rotational temperature of COMs suggest that they likely reside in the hotter and innermost region immediately surrounding the protostar. In G211.47-19.27S, the D/H ratio of methanol ([CH2DOH]/[CH3OH]) and the(12)C/C-13 ratio of methanol ([CH3OH]/[(CH3OH)-C-13]) are comparable to those of other hot corinos. Hydrocarbons and long-carbon-chain molecules such as c-C(3)H(2)and HCCCN are also detected in the four sources, likely tracing the outer and cooler molecular envelopes.
Subject: Astrochemistry
Interstellar molecules
Star-forming regions
Low mass stars
Protostars
MOLECULE FORMAMIDE
STAR-FORMATION
CHEMISTRY
EVOLUTION
PROTOSTARS
METHANOL
SUBMILLIMETER
DATABASE
DUST
CORE
115 Astronomy, Space science
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