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Rotating molecular gas associated with a silhouette disk in the center of the radio galaxy 3C 31

Published online by Cambridge University Press:  01 December 2004

T. Okuda ,
K. Kohno ,
S. Iguchi  and
K. Nakanishi
T. Okuda
Affiliation:
Institute of Astronomy, The University of Tokyo, 2-21-1 Osawa, Mitaka, Tokyo, Japan email: okuda@nro.nao.ac.jp Nobeyama Radio Observatory, Minamimaki, Minamisaku, Nagano, Japan
K. Kohno
Affiliation:
Institute of Astronomy, The University of Tokyo, 2-21-1 Osawa, Mitaka, Tokyo, Japan email: okuda@nro.nao.ac.jp
S. Iguchi
Affiliation:
National Astronomical Observatory of Japan, 2-21-1, Osawa, Mitaka, Tokyo, Japan
K. Nakanishi
Affiliation:
Nobeyama Radio Observatory, Minamimaki, Minamisaku, Nagano, Japan
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Abstract

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We have carried out aperture synthesis CO(J=1-0) observations of the FRI radio galaxy 3C 31 (NGC 383), using the Nobeyama Millimeter Array (NMA) and the RAINBOW interferometer, which achieves a large collecting area by adding the NRO 45m telescope. Our high-resolution (1.9″×1.4″) CO 3D observations reveal a very massive ($\sim 10^9 M_\odot$), circularly-rotating molecular gas ring, which coincides nicely with the silhouette disk seen in the Hubble Space Telescope (HST) optical images. This is the first map depicting the molecular gas distribution and kinematics associated with a silhouette disk in the heart of a radio galaxy.To search for other articles by the author(s) go to: http://adsabs.harvard.edu/abstract_service.html

Type
POSTERS
Information
Proceedings of the International Astronomical Union , Volume 2004 , Issue IAUS222 , March 2004 , pp. 349 - 350
Copyright
© 2004 International Astronomical Union