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| molecules:ism:cyclopropenon [2026/02/03 13:00] – mueller | molecules:ism:cyclopropenon [2026/02/03 14:29] (current) – mueller |
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| //Mon. Not. R. Astron. Soc.// **456**, 4101–4110 (2016).\\ | //Mon. Not. R. Astron. Soc.// **456**, 4101–4110 (2016).\\ |
| The molecule was detected in the 7<sub>1,6</sub> – 6<sub>1,5</sub> transition near 103.1 GHz toward four of seven dark clouds employing the IRAM 30 m telescope. The four sources are TMC-1, B1-b, L483, and Lupus-1A.\\ | The molecule was detected in the 7<sub>1,6</sub> – 6<sub>1,5</sub> transition near 103.1 GHz toward four of seven dark clouds employing the IRAM 30 m telescope. The four sources are TMC-1, B1-b, L483, and Lupus-1A.\\ |
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| | In their work on the\\ |
| | **[[https://doi.org/10.1051/0004-6361/202557355|Discovery of Linear Propadienone — Study of the Chemistry of Linear and Cyclic H2C3O and H2C3S in TMC-1]]**\\ |
| | //Astron. Astrophys.// **705**, Art. No. A206 (2026),\\ |
| | G. Esplugues, J. C. Loison, M. Agúndez, G. Molpeceres, N. Marcelino, B. Tercero, and J. Cernicharo\\ |
| | also identify isotopic species of cyclopropenone. Two //a//-type transitions were detected for the C<sub>2</sub> (ethene-type) position, c-H<sub>2</sub><sup>13</sup>CCCO, yielding a c-H<sub>2</sub>C<sub>3</sub>O to c-H<sub>2</sub><sup>13</sup>CCCO of 23 ± 9 and a <sup>12</sup>C to <sup>13</sup>C ratio of 46 ± 18 because of the two equivalent C<sub>2</sub> positions. Only one //a//-type transition had enough intensity in the case of the carbonyl C (C<sub>1</sub>), making the identification somewhat tentative. The <sup>12</sup>C to <sup>13</sup>C ratio is about 57. c-HDC<sub>3</sub>O was also identified with a H to D ratio of 24 ± 10 because of the two equivalent H positions.\\ |
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