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Searching for methylamine in Orion-KL using ALMA archival data

Published online by Cambridge University Press:  13 January 2020

Harumi Minamoto ,
Yoko Oya Open the ORCID record for Yoko Oya [Opens in a new window] ,
Hirota Tomoya  and
Hideko Nomura
Harumi Minamoto
Affiliation:
Department of Earth and Planetary Sciences, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8551, Japan, email: minamoto.h@eps.sci.titech.ac.jp
Yoko Oya
Affiliation:
Department of Physics, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan, email: oya@taurus.phys.s.u-tokyo.ac.jp
Hirota Tomoya
Affiliation:
National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588, Japan, email: tomoya.hirota@nao.ac.jp
Hideko Nomura
Affiliation:
Department of Earth and Planetary Sciences, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8551, Japan, email: minamoto.h@eps.sci.titech.ac.jp
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Abstract

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Methylamine (CH3NH2) is the simplest amine and thought to be a potential interstellar precursor to the amino acid glycine (NH2CH2COOH). It is confirmed by the experimental work and in terms of exploration in the Solar system, CH3NH2 has been detected in two comets. However, in molecular clouds, a robust detection of CH3NH2 has been reported only for Sgr B2(N) so far, while a variety of complex organic molecules have been detected by radio observations in many star-forming regions. To search for CH3NH2, we used the ALMA Cycle 2 archival data toward Orion Kleinmann-Low nebula (Orion-KL) at Band 6 and found 5 candidate emission at the hot core region. By using the rotation diagram method, we evaluated its tentative column density and rotational temperature to be 4.9×10 cm−2 and 102 K, respectively.

Keywords

astrobiologyastrochemistryISM: individual (Orion-KL)
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium S345: Origins: From the Protosun to the First Steps of Life , August 2018 , pp. 386 - 387
Copyright
© International Astronomical Union 2020 

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