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Chemical enrichment of galaxies as the result of organic synthesis in evolved stars

Published online by Cambridge University Press:  30 December 2019

Sun Kwok Open the ORCID record for Sun Kwok [Opens in a new window] ,
SeyedAbdolreza Sadjadi  and
Yong Zhang
Sun Kwok
Affiliation:
Dept. of Earth, Ocean and Atmospheric Sciences, University of British Columbia, Canada emails: skwok@eoas.ubc.ca, sunkwok@hku.hk Laboratory for Space Research, The University of Hong Kong, Hong Kong, China
SeyedAbdolreza Sadjadi
Affiliation:
Laboratory for Space Research, The University of Hong Kong, Hong Kong, China
Yong Zhang
Affiliation:
Laboratory for Space Research, The University of Hong Kong, Hong Kong, China School of Physics & Astronomy, Sun Yat Sen University, Zhuhai, China
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Abstract

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Infrared spectroscopic observations have shown that complex organics with mixed aromatic-aliphatic structures are synthesized in large quantities during the late stages of stellar evolution. These organics are ejected into the interstellar medium and spread across the Galaxy. Due to the sturdy structures of these organic particles, they can survive through long journeys across the Galaxy under strong UV background and shock conditions. The implications that stellar organics were embedded in the primordial solar nebula is discussed.

Keywords

stars: AGB and post-AGBISM: moleculesplanetary nebulae: general
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 14 , Symposium S343: Why Galaxies Care About AGB Stars: A Continuing Challenge through Cosmic Time , August 2018 , pp. 443 - 444
Copyright
© International Astronomical Union 2019 

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