Document Type

Article

Publication Date

11-2014

DOI

10.1093/mnras/stu1719

Publication Title

Monthly Notices of the Royal Astronomical Society

Volume

444

Issue

4

Pages

3721-3728

Abstract

Observations of carbon-rich circumstellar envelopes were made using the Phoenix spectrograph on the Gemini South telescope to determine the abundance of small carbon chain molecules. Vibration-rotation lines of the ν3 antisymmetric stretch of C3 near 2040 cm-1 (4.902 μm) have been used to determine the column density for four carbon-rich circumstellar envelopes: CRL 865, CRL 1922, CRL 2023 and IRC +10216. We additionally calculate the column density of C5 for IRC +10216, and provide an upper limit for five more objects. An upper limit estimate for the C7 column density is also provided for IRC+10216. A comparison of these column densities suggests a revision to current circumstellar chemical models may be needed. © 2014 The Authors.

Original Publication Citation

Hargreaves, R. J., Hinkle, K., & Bernath, P. F. (2014). Small carbon chains in circumstellar envelopes. Monthly Notices of the Royal Astronomical Society, 444(4), 3721-3728. doi:10.1093/mnras/stu1719

ORCID

0000-0002-1255-396X (Bernath)

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