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| molecules:ism:ch2 [2019/02/25 22:38] – external edit 127.0.0.1 | molecules:ism:ch2 [2019/10/21 17:21] (current) – mueller |
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| The methylene radical CH<sub>2</sub> had been identified in spectra recorded toward Orion KL and W51 M:\\ | The methylene radical CH<sub>2</sub> had been identified in spectra recorded toward Orion KL and W51 M:\\ |
| J. M. Hollis, P. R. Jewell, and F. J. Lovas,\\ | J. M. Hollis, P. R. Jewell, and F. J. Lovas,\\ |
| **[[http://cdsads.u-strasbg.fr/abs/1995ApJ...438..259H|Confirmation of Interstellar Methylene]]**\\ | **[[https://ui.adsabs.harvard.edu/abs/1995ApJ...438..259H|Confirmation of Interstellar Methylene]]**\\ |
| //Astrophys.// **438**, 259–264 (1995).\\ | //Astrophys.// **438**, 259–264 (1995).\\ |
| Even though only one transition was detected, namely the //N<sub>K<sub>a</sub>,K<sub>c</sub></sub>// = 4<sub>0,4</sub> – 3<sub>1,3</sub> transition, the observation of resolved fine and hyperfine structure secures the detection. It is noteworthy to point out that this transition probes fairly hot methylene; the transition is more than 200 K above ground. | Even though only one transition was detected, namely the //N<sub>K<sub>a</sub>,K<sub>c</sub></sub>// = 4<sub>0,4</sub> – 3<sub>1,3</sub> transition, the observation of resolved fine and hyperfine structure secures the detection. It is noteworthy to point out that this transition probes fairly hot methylene; the transition is more than 200 K above ground. |
| More recently, cold methylene has been detected in absorption toward Sgr B2 and W49 N. The transitions had been recorded earlier with the ISO Long Wavelength Spectrometer:\\ | More recently, cold methylene has been detected in absorption toward Sgr B2 and W49 N. The transitions had been recorded earlier with the ISO Long Wavelength Spectrometer:\\ |
| E. T. Polehampton, K. M. Menten, S. Brünken, G. Winnewisser, and J.-P. Baluteau\\ | E. T. Polehampton, K. M. Menten, S. Brünken, G. Winnewisser, and J.-P. Baluteau\\ |
| **[[http://dx.doi.org/10.1051/0004-6361:20041598|Far-Infrared Detection of Methylene]]**\\ | **[[https://doi.org/10.1051/0004-6361:20041598|Far-Infrared Detection of Methylene]]**\\ |
| //Astron. Astrophys.// **431**, 203–213 (2005). | //Astron. Astrophys.// **431**, 203–213 (2005). |
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