SIMBAD references

2014MNRAS.444.3721H - Mon. Not. R. Astron. Soc., 444, 3721-3728 (2014/November-2)

Small carbon chains in circumstellar envelopes.


Abstract (from CDS):

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 (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.

Abstract Copyright: © 2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2014)

Journal keyword(s): astrochemistry - molecular data - stars: abundances - stars: carbon - circum-stellar matter - infrared: stars

Simbad objects: 14

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