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Hyper-Fine Features of the Dust Distribution in the Central Region of the Seyfert Galaxy NGC 4151

Published online by Cambridge University Press:  13 May 2016

Hiroshi Ohtani ,
Takashi Hattori ,
Satoshi Miyazaki ,
Masanori lye ,
Yutaka Komiyama ,
Toshiyuki Sasaki ,
George Kosugi  and
Subaru team
Hiroshi Ohtani
Affiliation:
Department of Astronomy, Kyoto University, Kyoto, Japan
Takashi Hattori
Affiliation:
Department of Astronomy, Kyoto University, Kyoto, Japan
Satoshi Miyazaki
Affiliation:
National Astronomical Observatory, Mitaka, Japan
Masanori lye
Affiliation:
National Astronomical Observatory, Mitaka, Japan
Yutaka Komiyama
Affiliation:
Department of Astronomy, University of Tokyo, Tokyo, Japan
Toshiyuki Sasaki
Affiliation:
Subaru Telescope, Hilo, Hawaii, USA
George Kosugi
Affiliation:
Subaru Telescope, Hilo, Hawaii, USA
Subaru team
Affiliation:
Subaru Telescope, Hilo, Hawaii, USA

Abstract

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Fine features of the dust distribution in the central region of NGC 4151 have been studied from high resolution images obtained by the Subaru Telescope. The two dust lanes lying along a circum-nuclear ellipse of 40“ ×20” have been recognized to consist of a number of fine filaments and knots. In the inner region, there has been found dust distributed in a bipolar cone region extending to 5” from the nucleus. This cone is exactly complementary to the well-known bipolar ionized gaseous region. A dense knot is seen at 2” SE from the nucleus, but no torus-like feature is recognized. The masses of neutral gas in the outer lanes and in the inner region are estimated as 106M⊙ and 105M⊙ respectively. These observational results are compared with results of numerical simulations of gas dynamics.

Type
The Inner Regions of Galaxies
Information
Symposium - International Astronomical Union , Volume 205: Galaxies and their Constituents at the Highest Angular Resolutions , 2001 , pp. 168 - 171
Copyright
Copyright © Astronomical Society of the Pacific 2001 

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