| タイトル | SO in starburst galaxies |
| 著者（英） | Bennett, C. L.; Petuchowski, S. J. |
| 著者所属（英） | NASA Goddard Space Flight Center |
| 発行日 | 1992-05-20 |
| 言語 | eng |
| 内容記述 | The use of SO and SO2 as probes of the dense interstellar medium in the nearby starburst galaxies NGC 253 and M82 is described. Emission in the 99.3 GHz 3(2) - 2(1) rotational transition of SO was detected in NGC 253 and possibly in M82, and upper limits are reported for emission in the 219.9 GHz 6(5) - 5(4) transition of SO and two lines of SO2. The column density of SO relative to carbon sulfide, CS, is more than 0.08 in NGC 253, a value not much lower than Galactic ratios and consistent with models of dense interstellar clouds with a fractional abundance of atomic oxgyen greater than about 10 exp -7. The 218.8 GHz 3(21) - 2(20) transition of para-formaldehyde, with an excitation temperature of 68 K, was also detected in NGC 253. |
| NASA分類 | ASTROPHYSICS |
| レポートNO | 92A37710 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/327277 |
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