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molecules:ism:hc7n [2020/08/12 12:36]
mueller
molecules:ism:hc7n [2020/08/12 12:42]
mueller
Line 31: Line 31:
 **[[https://​doi.org/​10.1051/​0004-6361/​202038571|Detection of Vibrationally Excited HC<​sub>​7</​sub>​N and HC<​sub>​9</​sub>​N in IRC +10216]]**\\ **[[https://​doi.org/​10.1051/​0004-6361/​202038571|Detection of Vibrationally Excited HC<​sub>​7</​sub>​N and HC<​sub>​9</​sub>​N in IRC +10216]]**\\
 //Astron. Astrophys.//​ **640**, Art. No. L13 (2020).\\ //Astron. Astrophys.//​ **640**, Art. No. L13 (2020).\\
-The authors carried out an unbiased molecular with the Yebes 40 m dish between 31 and 50 GHz toward the circumstellar envelope of the famous C-rich AGB star CW Leonis. Numerous transitions of HC<​sub>​7</​sub>​N in its lowest excited state //​v//<​sub>​15</​sub>​ = 1 were detected despite a rotational temperature of around 25 K. The derived HC<​sub>​5</​sub>​N to HC<​sub>​7</​sub>​N ratio is extremely low, roughly 2.4. The derived HC<​sub>​7</​sub>​N to HC<​sub>​9</​sub>​N ratio is still very low, roughly 7.7.\\+The authors carried out an unbiased molecular ​line survey ​with the Yebes 40 m dish between 31 and 50 GHz toward the circumstellar envelope of the famous C-rich AGB star CW Leonis. Numerous transitions of HC<​sub>​7</​sub>​N in its lowest excited state //​v//<​sub>​15</​sub>​ = 1 were detected despite a rotational temperature of around 25 K. The derived HC<​sub>​5</​sub>​N to HC<​sub>​7</​sub>​N ratio is extremely low, roughly 2.4. The derived HC<​sub>​7</​sub>​N to HC<​sub>​9</​sub>​N ratio is still very low, roughly 7.7.\\
  
  
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  • Last modified: 2020/08/12 12:42
  • by mueller