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The evolution of carbon-chain chemistry from prestellar to protostellar cores in Taurus Molecular Cloud

Published online by Cambridge University Press:  09 June 2023

Jenny M. Ramos Open the ORCID record for Jenny M. Ramos [Opens in a new window]  and
Yao-Lun Yang Open the ORCID record for Yao-Lun Yang [Opens in a new window]
Jenny M. Ramos
Affiliation:
National University of San Marcos, Lima, 15081, Peru Chalmers Astrophysics & Space Sciences Summer (CASSUM) Research Program 2021 email: [email protected]
Yao-Lun Yang
Affiliation:
RIKEN Cluster for Pioneering Research, Wako-shi, Saitama, 351-0106, Japan Department of Astronomy, University of Virginia, Charlottesville, USA 22904 email: [email protected]
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Abstract

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The discovery of abundant carbon-chain molecules in protostellar cores motivates the development of the warm carbon-chain chemistry. To understand the role of warm carbon-chain chemistry in star-forming regions, we studied C2H and c-C3H2 in 15 embedded protostars in the Taurus molecular cloud, whose evolutionary stages range from prestellar to Class I/II, using data from the Submillimeter Telescope (SMT). We calculated the excitation temperature, column density, and abundance of C2H and c-C3H2 in each source. We compared those properties with evolutionary indicators of the protostars. We also estimated the kinetic temperature using RADEX. Finally, we compared the abundance of C2H and c-C3H2 in our survey with that in the survey of protostellar cores in the Perseus molecular cloud. While we are unable to identify new WCCCs, our results suggest that the abundances of C2H and c-C3H2 could be an indicator to find WCCC candidates.

Keywords

carbon-chain moleculesprotostarsTaurus Molecular Cloudastrochemistry
Type
Contributed Paper
Information
Proceedings of the International Astronomical Union , Volume 17 , Symposium S373: Resolving the Rise and Fall of Star Formation in Galaxies (Aug 2022) , August 2021 , pp. 63 - 66
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Copyright
© The Author(s), 2023. Published by Cambridge University Press on behalf of International Astronomical Union

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