The quest for C2N in space

Details The quest for C2N in space The quest for C2N in space

Nov 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004a%26a...426..517f&link_type=abstract

Astronomy and Astrophysics, v.426, p.517-521 (2004)

Astronomy and Astrophysics

Astrophysics

4

Molecular Processes, Stars: Agb And Post-Agb, Stars: Carbon, Circumstellar Matter

Scientific paper

An extensive search for the linear C2N radical towards the circumstellar envelope IRC+10216 has been performed. Eight frequency bands of the rotational transitions J = 7/2-5/2 up to 13/2-11/2 and 17/2-15/2 up to 23/2-21/2 of the C2N molecule including their λ-doubling components have been probed, using the IRAM 30 m telescope at Pico Veleta, Spain. However, there is no evidence for the existence of the C2N radical towards IRC+10216. Instead, a new upper limit NT = 3.8 × 10-12 cm-2 for the column density of C2N was estimated. Additionally, at least ten yet unidentified lines have been found.

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