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| molecules:ism:etsh [2021/05/07 15:30] – mueller | molecules:ism:etsh [2021/05/07 15:49] (current) – mueller |
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| C<sub>2</sub>H<sub>5</sub>SH]]**\\ | C<sub>2</sub>H<sub>5</sub>SH]]**\\ |
| //Astrophys. J. Lett.// **912** (2021), Art. No. L11.\\ | //Astrophys. J. Lett.// **912** (2021), Art. No. L11.\\ |
| Ten rotational transitions of the lower-lying gauche conformer with 3 ≤ //J// ≤ 10 and //K<sub>a</sub>// ≤ 3 were reported and shown, of which seven were unblended or marginally blended, two lines were more blended. The observations were part of an unbiased molecular line survey of the quiescent giant molecular cloud G+0.693−0.027, about 1' north-east of Sagittarius B2(N), carried out with the Yebes 40 m dish at 7 mm and with the IRAM 30 m dish at 3 mm. All lines, including the blended ones, were modeled reasonably well employing and LTE fit with //T//<sub>rot</sub> = 10 ± 1 K. The moderate signal-to-noise ratio limits the quality of this fit somewhat; the quoted values range from 13.4 to 6.0. The column density of formic acid is about a factor of 12 higher, that of methanethiol a factor of 40 higher.\\ | This is the first unumbiguous detection of ethanethiol in the ISM. Ten lines of the lower-lying gauche conformer with 3 ≤ //J// ≤ 10 and //K<sub>a</sub>// ≤ 3 were reported and shown, of which six were unblended or marginally blended, four lines were more blended. The observations were part of an unbiased molecular line survey of the quiescent giant molecular cloud G+0.693−0.027, about 1' north-east of Sagittarius B2(N), carried out with the Yebes 40 m dish at 7 mm and with the IRAM 30 m dish at 3 mm. All but one of the blended lines were modeled quite well employing an LTE fit with //T//<sub>rot</sub> ≈ 10 K. The column density of methanethiol is a factor of ∼16 higher, that of ethanol a factor of ∼15 higher.\\ |
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