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Proper motion of a nuclear jet relative to a maser feature in NGC 3079

Published online by Cambridge University Press:  03 August 2017

Satoko Sawada-Satoh ,
Makoto Inoue ,
Katsunori M. Shibata ,
Seiji Kameno ,
Naomasa Nakai ,
Victor Migenes  and
Phil J. Diamond
Satoko Sawada-Satoh
Affiliation:
ISAS, Yoshinodai, Sagamihara, Kanagawa, 229-8510 JAPAN
Makoto Inoue
Affiliation:
NAO, Mitaka, Tokyo, 181-8588 JAPAN
Katsunori M. Shibata
Affiliation:
NAO, Mitaka, Tokyo, 181-8588 JAPAN
Seiji Kameno
Affiliation:
NAO, Mitaka, Tokyo, 181-8588 JAPAN
Naomasa Nakai
Affiliation:
NRO, Nobeyama, Minamimaki, Nagano, 384-1305 JAPAN
Victor Migenes
Affiliation:
Univ. de Guanajuato, Guanajuato, CP 36000 MEXICO
Phil J. Diamond
Affiliation:
JBO, Jodrell Bank, Macclesfield, Cheshire, SK11 9DL U.K.

Abstract

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We present high resolution studies of the nuclear region in NGC 3079 with phase-referenced VLBI monitoring between its water maser and continuum emission. From results of the observations, NGC 3079 showed relative motion between core-jet-like continuum components. One of the components (A) relative to the reference maser feature moved with an apparent subluminal velocity along the SE-NW direction, almost parallel to alignment of the components. On the other hand, the position of the other component (B) did not show such a significant change. If the maser gas is associated with a rotating disk, the maser gas should be gravitationally bound to the central mass. This suggests that B and A are the nucleus and jet, respectively.

Type
Part 5. Extragalactic Nuclear Masers
Information
Symposium - International Astronomical Union , Volume 206: Cosmic Masers: From Protostars to Blackholes , 2002 , pp. 404 - 407
Copyright
Copyright © Astronomical Society of the Pacific 2002 

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