Show pageOld revisionsBacklinksBack to top This page is read only. You can view the source, but not change it. Ask your administrator if you think this is wrong. ===== The Detection of Ethanimine in the ISM ===== Ethanimine, CH<sub>3</sub>CHNH, is the the next heavier homolog of [[molecules:ism:H2CNH|methanimine]], H<sub>2</sub>CNH. It has been identified in spectra taken with the GBT 100 m telescope toward Sgr B2(N) by\\ R. A. Loomis, D. P. Zaleski, A. L. Steber, J. L. Neill, M. T. Muckle, B. J. Harris, J. M. Hollis, P. R. Jewell, V. Lattanzi, F. J. Lovas, O. Martinez, Jr., M. C. McCarthy, A. J. Remijan, B. H. Pate, and J. F. Corby,\\ **[[https://doi.org/10.1088/2041-8205/765/1/L9|The Detection of Interstellar Ethanimine (CH<sub>3</sub>CHNH) from Observations Taken during the GBT PRIMOS Survey]]**\\ //Astrophys. J// **765**, Art. No. 9 (2013).\\ 6 rotational transitions were detected for the lower energy //E//-conformer and 4 for the higher energy //Z//-conformer. The transitions had //J// < 4 and //K<sub>a</sub>// < 1, occured between 13 and 48 GHz and were mostly seen in absorption. Two higher energy rotational transitions of the //E//-conformer were seen in emission. All transitions displayed well resolved CH<sub>3</sub> internal rotation splitting and some showed <sup>14</sup>N hyperfine splitting. The lines were detected in the two well known velocity components 64 km/s and 82 km/s, though (partial) overlap occured for the latter in some lines. A rotational temperature of 6 K was assumed.\\ These, as well as other observations of fairly complex molecules toward Sgr B2(N) at apperently low rotational temperatures, may be related to findings by\\ M. A. Requena-Torres, J. Martín-Pintado, A. Rodríguez-Franco, S. Martín, N. J. Rodríguez-Fernández, and P. de Vicente,\\ **[[https://doi.org/10.1051/0004-6361:20065190|Organic Molecules in the Galactic Center – Hot Core Chemistry without Hot Cores]]**\\ //Astron. Astrophys.// **455**, 971–985 (2006);\\ and by\\ M. A. Requena-Torres, J. Martín-Pintado, S. Martín, and M. R. Morris,\\ **[[https://doi.org/10.1086/523627|The Galactic Center: The Largest Oxygen-bearing Organic Molecule Repository]]**\\ //Astrophys. J.// **672**, 352–360 (2008). ---- Contributor(s): H. S. P. Müller; 02, 2013 ---- molecules/ism/ethanimin.txt Last modified: 2019/10/24 09:43by mueller