The kinematics of the molecular gas in Centaurus A
1992; IOP Publishing; Volume: 391; Linguagem: Inglês
10.1086/171329
ISSN1538-4357
AutoresAlice C. Quillen, P. T. de Zeeuw, E. S. Phinney, T. G. Phillips,
Tópico(s)Astronomy and Astrophysical Research
Resumoview Abstract Citations (89) References (61) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The Kinematics of the Molecular Gas in Centaurus A Quillen, A. C. ; de Zeeuw, P. T. ; Phinney, E. S. ; Phillips, T. G. Abstract The CO (2-1) emission along the inner dust lane of Centaurus A, observed with the Caltech Submillimeter Observatory on Mauna Kea, shows the molecular gas to be in a thin disk, with a velocity dispersion of only about 10 km s^-1^. The observed line profiles are broadened considerably due to beam smearing of the gas velocity field. The profile shapes are inconsistent with planar circular and noncircular motion. However, a warped disk in a prolate potential provides a good fit to the profile shapes. The morphology and kinematics of the molecular gas is similar to that of the ionized material, seen in Hα. The best- fitting warped disk model not only matches the optical appearance of the dust lane but also agrees with the large-scale map of the CO emission and is consistent with H I measurements at larger radii. Publication: The Astrophysical Journal Pub Date: May 1992 DOI: 10.1086/171329 Bibcode: 1992ApJ...391..121Q Keywords: Galactic Structure; Gas Dynamics; Interstellar Gas; Molecular Gases; Radio Galaxies; Astronomical Models; Carbon Monoxide; Centaurus Constellation; Emission Spectra; Astrophysics; GALAXIES: INDIVIDUAL NGC NUMBER: NGC 5128; GALAXIES: INTERSTELLAR MATTER; GALAXIES: KINEMATICS AND DYNAMICS; ISM: MOLECULES full text sources ADS | data products SIMBAD (3) NED (1)
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