Millar, TJ, Walsh, C orcid.org/0000-0001-6078-786X, Cordiner, MA et al. (2 more authors) (2007) Hydrocarbon Anions in Interstellar Clouds and Circumstellar Envelopes. The Astrophysical Journal Letters, 662 (2). L87-L90. ISSN 2041-8205
Abstract
The recent detection of the hydrocarbon anion C6H- in the interstellar medium has led us to investigate the synthesis of hydrocarbon anions in a variety of interstellar and circumstellar environments. We find that the anion/neutral abundance ratio can be quite large, on the order of at least a few percent, once the neutral has more than five carbon atoms. Detailed modeling shows that the column densities of C6H- observed in IRC +10 216 and TMC-1 can be reproduced. Our calculations also predict that other hydrocarbon anions, such as C4H- and C8H-, are viable candidates for detection in IRC +10 216, TMC-1, and photon-dominated regions such as the Horsehead Nebula.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2007. The American Astronomical Society. All rights reserved. This is an author produced version of a paper published in The Astrophysical Journal Letters . Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Astrochemistry; ISM: abundances; ISM: clouds; ISM: molecules; Stars: carbon |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Physics and Astronomy (Leeds) > Astrophysics (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 09 Mar 2017 14:08 |
Last Modified: | 19 Jan 2018 02:50 |
Status: | Published |
Publisher: | American Astronomical Society |
Identification Number: | 10.1086/519376 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:107139 |