TY - JOUR
T1 - ALMA Survey of Orion Planck Galactic Cold Clumps (ALMASOP). I. Detection of New Hot Corinos with the ACA
AU - Hsu, Shih-Ying
AU - Liu, Sheng-Yuan
AU - Liu, Tie
AU - Sahu, Dipen
AU - Hirano, Naomi
AU - Lee, Chin-Fei
AU - Tatematsu, Kenichi
AU - Kim, Gwanjeong
AU - Juvela, Mika
AU - Sanhueza, Patricio
AU - He, Jinhua
AU - Johnstone, Doug
AU - Qin, Sheng-Li
AU - Bronfman, Leonardo J.
AU - Chen, Huei-Ru
AU - Dutta, Somnath
AU - Eden, David
AU - Jhan, Kai-Syun
AU - Kim, Kee-Tae
AU - Kuan, Yi-Jehng
AU - Kwon, Woojin
AU - Lee, Chang Won
AU - Lee, Jeong-Eun
AU - Moraghan, Anthony
AU - Rawlings, Mark
AU - Shang, Hsien
AU - Soam, Archana
AU - Thompson, Mark
AU - Traficante, Alessio
AU - Wu, Yuefang
AU - Yang, Yao-Lun
AU - Zhang, Qizhou
N1 - © 2020 IOP Publishing Ltd. This is an author-created, un-copyedited version of an article accepted for publication in The Astrophysical Journal. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The definitive publisher authenticated version is available online at https://doi.org/10.3847/1538-4357/ab9f3a
PY - 2020/7/29
Y1 - 2020/7/29
N2 - 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 λ 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 12C/13C ratio of methanol ([CH3OH]/[13CH3OH]) are comparable to those of other hot corinos. Hydrocarbons and long-carbon-chain molecules such as c-C3H2 and HCCCN are also detected in the four sources, likely tracing the outer and cooler molecular envelopes.
AB - 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 λ 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 12C/13C ratio of methanol ([CH3OH]/[13CH3OH]) are comparable to those of other hot corinos. Hydrocarbons and long-carbon-chain molecules such as c-C3H2 and HCCCN are also detected in the four sources, likely tracing the outer and cooler molecular envelopes.
UR - http://www.scopus.com/inward/record.url?scp=85091693097&partnerID=8YFLogxK
U2 - 10.3847/1538-4357/ab9f3a
DO - 10.3847/1538-4357/ab9f3a
M3 - Article
SN - 0004-637X
VL - 898
JO - The Astrophysical Journal
JF - The Astrophysical Journal
IS - 2
M1 - 107
ER -