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Complex organic molecules tracing the comet-forming zones in protoplanetary disks

Published online by Cambridge University Press:  12 October 2020

Catherine Walsh Open the ORCID record for Catherine Walsh [Opens in a new window]  and
John D. Ilee
Catherine Walsh
Affiliation:
School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, UK email: [email protected]
John D. Ilee
Affiliation:
School of Physics and Astronomy, University of Leeds, Leeds LS2 9JT, UK email: [email protected]
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Abstract

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Resolved emission from gas-phase methanol can reveal the abundance and distribution of the comet-forming ice reservoir in protoplanetary disks. ALMA Cycle 4 observations of four transitions of gas-phase methanol in TW Hya allow the first model-independent determination of the rotational temperature of methanol in a prototoplanetary disk. The data confirm that the methanol is rotationally cold (Trot < 50 K), and well constrain the column density to 2 × 1012 cm−2. Astrochemical models will constrain the chemical origin of methanol in TW Hya.

Keywords

astrochemistryplanetary systems: protoplanetary disks
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 15 , Symposium S350: Laboratory Astrophysics: From Observations to Interpretation , April 2019 , pp. 463 - 464
Copyright
© International Astronomical Union 2020

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