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Probing Physics and Chemistry in Circumnuclear Torus with OH

Published online by Cambridge University Press:  30 March 2016

Yu Zhi-yao
Yu Zhi-yao*
Affiliation:
Shanghai Astronomical Observatory, 80 Nandan Road,Shanghai 200030, ChinaNational Astronomical Observatories, Beijing 100012, China E-mail: zyyu@center.shao.ac.cn

Abstract

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We observed OH maser emission at 18cm in a circumnuclear torus surrounding the center of IRAS10173+0828 using the 7 telescopes of MERLIN, together with the Lovell antenna. IRAS10173+0828 is a distant super-luminous far-infrared galaxy. The OH maser emission is remarkably narrow (FWHP = 39km s_1) for its strength, and the 1667 and 1665 MHz lines are well separated. The 1667 transition shows two distinct peaks displaced from one another by 100 km s−1. Using our MERLIN observational results we probe the physics in the circumnuclear torus surrounding the center of IRAS10173+0828, obtain the kinematic properties of the torus, and study the central source.

Type
I. Joint Discussions
Information
Highlights of Astronomy , Volume 13 , 2005 , pp. 848 - 850
Copyright
Copyright © Astronomical Society of Pacific 2005

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