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--- molecules:ism:mecho [2023/03/06 12:49] – mueller
+++ molecules:ism:mecho [2023/03/06 13:09] (current) – mueller
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 species of acetaldehyde CH<sub>2</sub>DCOH and CH<sub>3</sub>COD]]**\\
 //Astron. Astrophys.// **624**, Art. No. A70 (2019).\\
+The observations are based on PILS.\\
 \\
-J. Ferrer Asensio , S. Spezzano, L. H. Coudert, V. Lattanzi, C. P. Endres, J. K. Jørgensen, and P. Caselli\\
+J. Ferrer Asensio, S. Spezzano, L. H. Coudert, V. Lattanzi, C. P. Endres, J. K. Jørgensen, and P. Caselli\\
+described the\\
+**[[https://doi.org/10.1051/0004-6361/202245442|Millimetre and Sub-millimetre Spectroscopy of Doubly Deuterated Acetaldehyde (CHD<sub>2</sub>CHO) and First Detection towards IRAS 16293−2422]]**\\
+//Astron. Astrophys.// **670**, Art. No. A177 (2023).\\
+The observations are based on PILS. The authors determine a CHD<sub>2</sub>CHO to CH<sub>2</sub>DCOH ratio of ~0.21. It is also worthwhile to compare the column densities with that of the main isotopic species. This translates to a deueration degree of ~0.017 per H atom for CH<sub>2</sub>DCOH and ~0.060 for CHD<sub>2</sub>CHO. Such enhancement in the degree of deueration in doubly or higher deuterated isotopologs compared with sinly deuterated variants has been found commonly.\\
+\\
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-Contributor(s): H. S. P. Müller; 11, 2009; 03, 2012; 01, 2014; 10, 2017; 01, 2019; 04, 2019
+Contributor(s): H. S. P. Müller; 11, 2009; 03, 2012; 01, 2014; 10, 2017; 01, 2019; 04, 2019; 03, 2023.
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