molecules:ism:ethylformiat

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molecules:ism:ethylformiat [2019/02/25 22:38] – external edit 127.0.0.1molecules:ism:ethylformiat [2019/04/24 16:15] (current) mueller
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 A. Belloche, R. T. Garrod, H. S. P. Müller, K. M. Menten, C. Comito, and P. Schilke\\ A. Belloche, R. T. Garrod, H. S. P. Müller, K. M. Menten, C. Comito, and P. Schilke\\
 reported on the\\ reported on the\\
-**[[http://dx.doi.org/10.1051/0004-6361/200811550|Increased Complexity in Interstellar Chemistry: Detection and Chemical Modeling of Ethyl Formate and //n//-Propyl Cyanide in Sagittarius B2(N)]]**\\+**[[https://doi.org/10.1051/0004-6361/200811550|Increased Complexity in Interstellar Chemistry: Detection and Chemical Modeling of Ethyl Formate and //n//-Propyl Cyanide in Sagittarius B2(N)]]**\\
 //Astron. Astrophys.// **499**, (2009) 215–232.\\ //Astron. Astrophys.// **499**, (2009) 215–232.\\
-See also the [[http://www.mpifr-bonn.mpg.de/pressreleases/2009/3|MPIfR press release]] (in English; German version also available).\\+See also the [[https://www.mpifr-bonn.mpg.de/pressreleases/2009/3|MPIfR press release]] (in English; German version also available).\\
 In the group of the complex molecules detected by radio astronomical means, ethyl formate, C<sub>2</sub>H<sub>5</sub>OCHO, and //n//-propyl cyanide are among the largest. They have been detected in the famous massive star-forming region Sagittarius B2(N) in the course of a molecular line survey in the 3 mm frequency domain with additional observations at 2 and 1 mm carried out with the IRAM 30 m radio telescope.\\ In the group of the complex molecules detected by radio astronomical means, ethyl formate, C<sub>2</sub>H<sub>5</sub>OCHO, and //n//-propyl cyanide are among the largest. They have been detected in the famous massive star-forming region Sagittarius B2(N) in the course of a molecular line survey in the 3 mm frequency domain with additional observations at 2 and 1 mm carried out with the IRAM 30 m radio telescope.\\
-[[http://www.astro.uni-koeln.de/site/vorhersagen/molecules/ism/AAN.html|Aminoacetonitrile]] was detected earlier in the course of this molecular line survey.\\+[[molecules:ism:aan|Aminoacetonitrile]] was detected earlier in the course of this molecular line survey.\\
 At a rotational temperature of about 100 K, very many transitions of ethyl formate have non-negligible intensities. However, many of them are blended severely with emissions or absorptions of other molecules. Nevertheless, a considerable number of transitions of the lower energy //anti//-conformer are not or only slightly blended. Its column density in Sgr B2(N) is similar to that of formic acid, and about a factor of 15 lower than that of methyl formate. At a rotational temperature of about 100 K, very many transitions of ethyl formate have non-negligible intensities. However, many of them are blended severely with emissions or absorptions of other molecules. Nevertheless, a considerable number of transitions of the lower energy //anti//-conformer are not or only slightly blended. Its column density in Sgr B2(N) is similar to that of formic acid, and about a factor of 15 lower than that of methyl formate.
  
 The molecule was recently also identified in the Orion KL compact ridge region in the course of a molecular line survey carried out with the IRAM 30 m radio telescope.\\ The molecule was recently also identified in the Orion KL compact ridge region in the course of a molecular line survey carried out with the IRAM 30 m radio telescope.\\
 B. Tercero, I. Kleiner, J. Cernicharo, H. V. L. Nguyen, A. López, and G. M. Muñoz Caro:\\ B. Tercero, I. Kleiner, J. Cernicharo, H. V. L. Nguyen, A. López, and G. M. Muñoz Caro:\\
-**[[http://dx.doi.org/10.1088/2041-8205/770/1/L13|Discovery of Methyl Acetate and Gauche Ethyl Formate in Orion]]**\\+**[[https://doi.org/10.1088/2041-8205/770/1/L13|Discovery of Methyl Acetate and Gauche Ethyl Formate in Orion]]**\\
 //Astrophys. J.// **770**, (2013) Art. No. L13.\\ //Astrophys. J.// **770**, (2013) Art. No. L13.\\
 Both conformers, //anti// and //gauche//, had about similar column densities, compatible with a kinetic temperature of 135 K. This agrees essentially with 150 K derived as rotational temperature of methyl acetate, which has a five times higher column density in this source than ethyl formate. Both conformers, //anti// and //gauche//, had about similar column densities, compatible with a kinetic temperature of 135 K. This agrees essentially with 150 K derived as rotational temperature of methyl acetate, which has a five times higher column density in this source than ethyl formate.
  
-Ethyl formate is the second ester and the second formate to be detected in the ISM after [[http://www.astro.uni-koeln.de/site/vorhersagen/molecules/ism/Methylformiat.html|methyl formate]]. The isomeric [[http://www.astro.uni-koeln.de/site/vorhersagen/molecules/ism/MeAc.html|methyl acetate]] was also detected very recently.+Ethyl formate is the second ester and the second formate to be detected in the ISM after [[molecules:ism:methylformiat|methyl formate]]. The isomeric [[molecules:ism:meac|methyl acetate]] was also detected very recently.
  
  
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