Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...378..127o&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 378, Sept. 1, 1991, p. 127-130.
Astronomy and Astrophysics
Astrophysics
22
Galactic Nuclei, Galactic Structure, Milky Way Galaxy, Molecular Clouds, Interstellar Gas, Interstellar Matter, Molecular Gases
Scientific paper
High-resolution ammonia-line images of the M - 0.13 - 0.08 (20 km/s) cloud in the Galactic center region have been obtained with the Nobeyama Millimeter Array. The 20 km/s cloud has a fingerlike structure extending toward the Galactic center. It almost reaches to the circumnuclear ring (disk) surrounding Sgr A West in projection. A large systematic velocity gradient (5-10 km/s arcmin) along the elongation is found over the whole length of the cloud. It is suggested that these characteristics are caused by tidal force in the gravitational field of the Galactic center. Part of the fingerlike structure might be torn away from the cloud and infall toward the circumnuclear ring. The 20 km/s cloud would supply neutral gas to the central 10 pc of the Galactic center.
Fomalont Edward B.
Hasegawa Tetsuo
Ishiguro Masato
Kasuga Takashi
Kawabe Ryohei
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