Astronomical detection of the cyanobutadiynyl radical C5N

被引：0
作者：
Guelin, M
Neininger, N
Cernicharo, J
机构：
[1] Inst Radio Astron Millimetr, F-38406 St Martin Dheres, France
[2] Univ Bonn, Inst Radioastron, D-53121 Bonn, Germany
[3] Inst Estructura Mat, E-28006 Madrid, Spain
来源：
ASTRONOMY & ASTROPHYSICS | 1998年 / 335卷 / 01期
关键词：
molecular data; circumstellar matter; ISM : molecules; radio lines : stars;
D O I：
暂无
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We report the detection of the elusive carbon-chain radical C5N in the dark cloud TMC1 and its tentative detection in the circumstellar envelope IRC+10216. C5N appears to be two orders of magnitude less abundant than the related molecule HC5N and much less abundant than expected from current gas phase chemistry models. In comparison the HC3N to C3N abundance ratio is of the order of 10, in reasonable agreement with model predictions. We have also detected in IRC+10216 two lines arising from the C3H radical in its excited v(4) = 1 state.
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页码：L1 / L4
页数：4
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