University of Illinois Urbana-Champaign

Small Carbon Chains In Circumstellar Envelopes

Hargreaves, Robert J.

Content Files
MF07_Abstract.pdf
MF07_Abstract.txt
MF07_Presentation.pptx

Permalink

https://hdl.handle.net/2142/50910

Description

Title
Small Carbon Chains In Circumstellar Envelopes
Author(s)
Hargreaves, Robert J.
Contributor(s)
  • Bernath, Peter F.
  • Hinkle, Kenneth
Issue Date
2014-06-16
Keyword(s)
Astronomy
Date of Ingest
  • 2014-09-17T16:55:23Z
  • 2015-04-14T18:39:38Z
Abstract
Observations were made of a number of carbon-rich circumstellar envelopes using the Phoenix spectrograph on the Gemini South telescope to determine the presence of small carbon chain molecules. The circumstellar envelope of IRC+10216 (CRL 1381) has been extensively studied, due to its brightness in the infrared, and \chem{C_3} and \chem{C_5} have previously been observed\footnote{Hinkle, K.W., Keady, J.J., \& Bernath, P.F. 1988, \textit{Science}, 241, 1319}\footnote{Bernath, P.F., Hinkle, K.H., \& Keady, J.J. 1989, \textit{Science}, 244, 562}. Vibration-rotation lines of the \nub{3} antisymmetric stretch of \chem{C_3} near 2040 \wn have been used to determine the column density of \chem{C_3} in three new circumstellar envelopes: CRL 865, CRL 1922 and CRL 2023. Our new observations support the column density determined from CRL 1381 and also demonstrate that \chem{C_3} is common in carbon-rich circumstellar shells. We additionally determine upper limits for the small carbon chains, \chem{C_5} and \chem{C_7}.
Publisher
International Symposium on Molecular Spectroscopy
Type of Resource
text
Genre of Resource
Conference Paper / Presentation
Language
English
Permalink
http://hdl.handle.net/2142/50910
DOI
https://doi.org/10.15278/isms.2014.MF07
Copyright and License Information
Copyright 2014 by the authors. Licensed under a Creative Commons Attribution 4.0 International License. http://creativecommons.org/licenses/by/4.0/

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Abstracts & Presentations - 2014 International Symposium on Molecular Spectroscopy PRIMARY