molecules:ism:hnc3

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molecules:ism:hnc3 [2020/11/16 13:19] – muellermolecules:ism:hnc3 [2024/04/08 17:56] – mueller
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 **[[https://ui.adsabs.harvard.edu/abs/1992ApJ...396L..49K|Detection of HNCCC in TMC-1]]**\\ **[[https://ui.adsabs.harvard.edu/abs/1992ApJ...396L..49K|Detection of HNCCC in TMC-1]]**\\
 //Astrophys. J.// **396**, L49 (1992).\\ //Astrophys. J.// **396**, L49 (1992).\\
-The Nobeyama 45 m telescope was used to detect the //J// = 3 – 2, 4 – 3, and 5 – 4 transitions near 28.0, 37.3, and 46.7 GHz. The [[http://www.astro.uni-koeln.de/site/vorhersagen/molecules/ism/HCCNC.html|HCCNC]] isomer was found only slightly earlier, whereas the HC<sub>3</sub>N isomer had been known for a considerable time.+The Nobeyama 45 m telescope was used to detect the //J// = 3 – 2, 4 – 3, and 5 – 4 transitions near 28.0, 37.3, and 46.7 GHz. The [[http://www.astro.uni-koeln.de/site/vorhersagen/molecules/ism/HCCNC.html|HCCNC]] isomer was found only slightly earlier, whereas the HC<sub>3</sub>N isomer had been known for a considerable time.\\ 
 +\\
  
 P. D. Gensheimer reported on\\ P. D. Gensheimer reported on\\
 **[[https://doi.org/10.1023/A:1000744924767|Observations of HCCNC and HNCCC in IRC+10216]]**\\ **[[https://doi.org/10.1023/A:1000744924767|Observations of HCCNC and HNCCC in IRC+10216]]**\\
 //Astrophys. Space Sci.// **251**, 199 (1997).\\ //Astrophys. Space Sci.// **251**, 199 (1997).\\
-The NRAO 12 m telescope was used to detect the //J// = 11 – 10 transition near 102.7 GHz. The HCCNC to HNC<sub>3</sub> ratio is about 8, similar to that in TMC-1. Because of only one detected line, this report should be viewed with some caution.+The NRAO 12 m telescope was used to detect the //J// = 11 – 10 transition near 102.7 GHz. The HCCNC to HNC<sub>3</sub> ratio is about 8, similar to that in TMC-1. Because of only one detected line, this report should be viewed with some caution.\\ 
 +\\
  
 C. Vastel, K. Kawaguchi, D. Quénard, M. Ohishi, B. Lefloch, R. Bachiller, and H. S. P. Müller\\ C. Vastel, K. Kawaguchi, D. Quénard, M. Ohishi, B. Lefloch, R. Bachiller, and H. S. P. Müller\\
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 //Mon. Not. R. Astron. Soc.// **474**, L76 (2018).\\ //Mon. Not. R. Astron. Soc.// **474**, L76 (2018).\\
 The //J// = 8 – 7, 9 – 8, and 10 – 9 transitions were detected near 74.7, 84.0, and 93.4 GHz. The column density is only slightly smaller than that in TMC-1, similar to HCCNC, even though HC<sub>3</sub>N is less abundant by about one order of magnitide in L1544 compared to TMC-1.\\ The //J// = 8 – 7, 9 – 8, and 10 – 9 transitions were detected near 74.7, 84.0, and 93.4 GHz. The column density is only slightly smaller than that in TMC-1, similar to HCCNC, even though HC<sub>3</sub>N is less abundant by about one order of magnitide in L1544 compared to TMC-1.\\
 +\\
  
 J. Cernicharo, N. Marcelino, M. Agúndez, C. Bermúdez, C. Cabezas, B. Tercero, and J. R. Pardo\\ J. Cernicharo, N. Marcelino, M. Agúndez, C. Bermúdez, C. Cabezas, B. Tercero, and J. R. Pardo\\
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 //Astron. Astrophys.// **642**, Art. No. L8 (2020).\\ //Astron. Astrophys.// **642**, Art. No. L8 (2020).\\
 The authors report the detection of DNC<sub>3</sub>. The observations were obtained with the Yebes 40m radio telescope in the course of a line survey covering 31.0–50.3 GHz.\\ The authors report the detection of DNC<sub>3</sub>. The observations were obtained with the Yebes 40m radio telescope in the course of a line survey covering 31.0–50.3 GHz.\\
 +\\
 +
 +J. Cernicharo, B. Tercero, C. Cabezas, M. Agúndez, E. Roueff, R. Fuentetaja, N. Marcelino, and P. de Vicente\\
 +carried out more recently a\\
 +**[[https://doi.org/10.1051/0004-6361/202348822|Study of the HCCNC and HNCCC isotopologs in TMC-1]]**\\
 +//Astron. Astrophys.// **682**, Art. No. L13 (2024).\\
 +They reported in the framework of improved data of the above survey the detection of the three HNC<sub>3</sub> <sup>13</sup>C isotopomers. They determined the <sup>12</sup>C/<sup>13</sup>C ratios of ~90 with scatter that is insignificant with respect to the uncertainties. These values are somewhat lower than ~65 usually found in the the local ISM, but very similar to values of HCCNC <sup>13</sup>C isotopomers and to two of the three HC<sub>3</sub>N <sup>13</sup>C isotopomers. 
  
  
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-Contributor(s): H. S. P. Müller; 12, 2017; 11, 2020+Contributor(s): H. S. P. Müller; 12, 2017; 11, 2020; 04, 2024
  
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  • molecules/ism/hnc3.txt
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