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Molecules in nearby and primordial supernovae

Published online by Cambridge University Press:  01 February 2008

Isabelle Cherchneff  and
Simon Lilly
Isabelle Cherchneff
Affiliation:
Institut für Astronomie, ETH HönggerbergWolfgang-Pauli-Strasse, 16, 8093, Zürich, Switzerland email: [email protected]
Simon Lilly
Affiliation:
Institut für Astronomie, ETH HönggerbergWolfgang-Pauli-Strasse, 16, 8093, Zürich, Switzerland email: [email protected]
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Abstract

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We present new chemical models of supernova (SN) ejecta based on a chemical kinetic approach. We focus on the formation of inorganic and organic molecules including gas phase dust precursors, and consider zero-metallicity progenitor, massive supernovae and nearby core-collapse supernovae such as SN1987A. We find that both types are forming large amounts of molecules in their ejecta at times as early as 200 days after explosion. Upper limits on the dust formation budget are derived. Our results on dust precursors do not agree with existing studies on dust condensation in SN ejecta. We conclude that PMSNe could be the first non-primodial molecule providers in the early universe, ejecting up to 34% of their progenitor mass under molecular form to the pristine, local gas.

Keywords

Astrochemistrymolecular processessupernova: generalindividual (SN1987A)early universe
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 4 , Symposium S251: Organic Matter in Space , February 2008 , pp. 221 - 226
Copyright
Copyright © International Astronomical Union 2008

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