Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
molecules:ism:mgc2_4h [2021/09/03 17:14]
mueller
molecules:ism:mgc2_4h [2021/09/03 17:29] (current)
mueller
Line 23: Line 23:
 **[[https://​doi.org/​10.1051/​0004-6361/​202141671|Magnesium Radicals MgC<​sub>​5</​sub>​N and MgC<​sub>​6</​sub>​H in IRC +10216]]**\\ **[[https://​doi.org/​10.1051/​0004-6361/​202141671|Magnesium Radicals MgC<​sub>​5</​sub>​N and MgC<​sub>​6</​sub>​H in IRC +10216]]**\\
 //Astron. Astrophys.//​ **652**, Art. No. L13 (2021).\\ //Astron. Astrophys.//​ **652**, Art. No. L13 (2021).\\
-The 40 m Centro AstronĂ³mico de Yebes dish was employed to observe 16 rotational transitions of magnesium monotriacetylide,​ MgC<​sub>​6</​sub>​H,​ with //N"// = 26 to 41 between 31.0 and 50.3 GHz toward the famous near-by carbon-rich AGB star CW Leonis. Some of the transitions displayed resolved fine structure (FS) splitting. 10 transitions appear to be unblended or only slightly blended, one FS component each was sufficiently clear for two more transitions. The identification of a new species is unambiguous. The identification of the carrier may be viewed with slight caution in the absence of laboratory data. However, the FS spltting is a very strong indicator that the identification is unambiguous as well. It is very interesting to note that the triacetylide and the diacetylide have about the same column densities, and both are about a factor of 10 more abundant than MgC<​sub>​2</​sub>​H. The authors justified this by their likely formation which involves radiative association reactions of Mg<​sup>​+</​sup>​ with C<​sub>​2n</​sub>​H<​sub>​2</​sub>​.\\+The 40 m Centro AstronĂ³mico de Yebes dish was employed to observe 16 rotational transitions of magnesium monotriacetylide,​ MgC<​sub>​6</​sub>​H,​ with //N"// = 26 to 41 between 31.0 and 50.3 GHz toward the famous near-by carbon-rich AGB star CW Leonis. Some of the transitions displayed resolved fine structure (FS) splitting. 10 transitions appear to be unblended or only slightly blended, one FS component each was sufficiently clear for two more transitions. The identification of a new species is unambiguous. The identification of the carrier may be viewed with slight caution in the absence of laboratory data. However, the FS spltting is a very strong indicator that the identification is unambiguous as well. It is very interesting to note that the triacetylide and the diacetylide have about the same column densities, and both are about a factor of 10 more abundant than MgC<​sub>​2</​sub>​H. The authors justified this by their likely formation which involves radiative association reactions of Mg<​sup>​+</​sup>​ with C<​sub>​2n</​sub>​H<​sub>​2</​sub>​. These ratios are quite similar to those observed for the isoelectronic MgC<​sub>​2n+1</​sub>​N molecules.\\
  
 ---- ----
  • molecules/ism/mgc2_4h.1630682054.txt.gz
  • Last modified: 2021/09/03 17:14
  • by mueller