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Title:Small Carbon Chains In Circumstellar Envelopes
Author(s):Hargreaves, Robert J.
Contributor(s):Bernath, Peter F.; Hinkle, Kenneth
Subject(s):Astronomy
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}.
Issue Date:2014-06-16
Publisher:International Symposium on Molecular Spectroscopy
Citation Info:Hargreaves, R.J.; Bernath, P.F.; Hinkle, K. SMALL CARBON CHAINS IN CIRCUMSTELLAR ENVELOPES. Proceedings of the International Symposium on Molecular Spectroscopy, Urbana, IL, June 16-21, 2014. DOI: 10.15278/isms.2014.MF07
Genre:CONFERENCE PAPER/PRESENTATION
Type:Text
Language:English
URI:http://hdl.handle.net/2142/50910
DOI:10.15278/isms.2014.MF07
Rights Information:Copyright 2014 by the authors. Licensed under a Creative Commons Attribution 4.0 International License. http://creativecommons.org/licenses/by/4.0/
Date Available in IDEALS:2014-09-17
2015-04-14


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