DETECTIONS OF C 2 H, CYCLIC-C 3 H 2 , AND H 13 CN IN NGC 1068
作者： T. Nakajima , S. Takano , K. Kohno , H. Inoue
DOI: 10.1088/2041-8205/728/2/L38
关键词: Telescope 、 Spectral line 、 Galaxy 、 Active galactic nucleus 、 Beam size 、 Physics 、 Rotational transition 、 Starburst region 、 Radio galaxy 、 Astrophysics 、 Astronomy 、 Space and Planetary Science 、 Astronomy and Astrophysics
摘要: We used the Nobeyama 45 m telescope to conduct a spectral line survey in 3 mm band (85.1-98.4 GHz) toward one of nearest galaxies with an active galactic nucleus (AGN), NGC 1068, and prototypical starburst galaxy 253. The beam size this is ~ 18'', which was sufficient spatially separate nuclear molecular emission from circumnuclear region 1068. detected rotational transitions C2H, cyclic-C3H2, H13CN These are detections carbon-chain carbon-ring molecules In addition, C2H N = 1-0 lines were column densities determined be 3.4 × 1015 cm–2 1068 1.8 cyclic-C3H2 1.7 1013 4.4 calculated abundances these relative CS for both 253, found that there no significant differences between two galaxies. This result suggests basic carbon-containing either insusceptible AGN or tracing cold (T rot~ 10 K) gas rather than X-ray irradiated hot gas.
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