Show pageOld revisionsBacklinksBack to top This page is read only. You can view the source, but not change it. Ask your administrator if you think this is wrong. ===== Detection of Circumstellar Cyanomethylidyne, C2N ===== J. K. Anderson and L. M. Ziurys,\\ reported on the\\ **[[https://doi.org/10.1088/2041-8205/795/1/L1|Detection of CCN (//X// <sup>2</sup>Π<sub>r</sub>) in IRC+10216: Constraining Carbon-chain Chemistry]]**,\\ //Astrophys. J.// **795** Art. No. L1 (2014).\\ The ARO 12 m and the ARO SMT were used to detect the two Λ-doubling components each of three rotational transitions in the <sup>2</sup>Π<sub>1/2</sub> lower energy spin ladder: the //J// = 9.5 – 8.5, 6.5 – 5.5, and the 4.5 – 3.5 transitions near 224.45, 153.63, and 106.36 GHz in the circumstellar envelope of CW Leonis. According to the authors, the higher frequency //f//-components are always unblended, whereas the //e//-components are always partially blended. Because of its rather low abundance, ratios of about 500 : 1 : 50 were derived for CN, C<sub>2</sub>N, and C<sub>3</sub>N, and its small dipole moment, the molecule was very hard to detect. ---- Contributor(s): H. S. P. Müller; 10, 2014 ---- molecules/ism/c2n.txt Last modified: 2019/10/21 17:41by mueller