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EVN Observations of the OH megamaser galaxies Mrk 231 and IC 694

Published online by Cambridge University Press:  03 August 2017

Hans-Rainer Klöckner  and
Willem A. Baan
Hans-Rainer Klöckner
Affiliation:
Kapteyn Institute & ASTRON, P.O. Box 800, 9700 AV Groningen, The Netherlands
Willem A. Baan
Affiliation:
ASTRON, Westerbork Observatory, P.O. Box 2, 7990 AA Dwingeloo, The Netherlands

Abstract

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We present EVN observations of hydroxyl (OH) main-line emission in two megamaser sources Mrk 231 and IC 694. The observations indicate that the broad maser emission lines originate within the nuclear regions. A single 1667 MHz main-line feature is seen at the nucleus of IC 694. In Mrk 231 both main-lines were observed in an extended “half-circular” region of 150 pc by 50 pc surrounding the radio nucleus.

Type
Part 5. Extragalactic Nuclear Masers
Information
Symposium - International Astronomical Union , Volume 206: Cosmic Masers: From Protostars to Blackholes , 2002 , pp. 430 - 433
Copyright
Copyright © Astronomical Society of the Pacific 2002 

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