SIMBAD references

2003ApJ...596..556A - Astrophys. J., 596, 556-560 (2003/October-2)

A C-band spectral scan of IRC +10°216.

ARAYA E., HOFNER P., GOLDSMITH P., SLYSH S. and TAKANO S.

Abstract (from CDS):

We report the results of the presently lowest frequency spectral line survey of the asymptotic giant branch carbon star IRC +10°216. The entire Arecibo C band (4-6 GHz) was observed with a noise level of ∼0.3 mJy (1 σ). We report the detection of HC5N (J=2-1), which is the lowest frequency transition of the HC5N molecule found in the envelope of IRC +10°216. The HC5N J=2 column density derived from our observations confirms the presence of two temperature components in the molecular envelope of IRC +10°216. The HC5N J=2-1 transition traces the cold molecular component characterized by an excitation temperature of ∼13.8 K. We derive upper limits for several transitions of molecules that had previously been detected in IRC +10°216 at higher frequencies. We also report the frequency ranges in the Arecibo C band that were affected by radio frequency interference.

Abstract Copyright:

Journal keyword(s): Stars: Circumstellar Matter - Radio Lines: Stars - Stars: Carbon - Stars: Individual: Alphanumeric: IRC +10216 - Telescopes

Simbad objects: 3

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2021.04.20-07:22:08

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