Detection of water vapor maser in a narrow-line Seyfert 1 nucleus

Y. Hagiwara; P. J. Diamond; E. Rovilos; M. Miyoshi

doi:10.1051/eas:2003150

All issues

Volume 10 (2003)

EAS Publications Series, 10 (2003) 203

Abstract

Issue		EAS Publications Series Volume 10, 2003 JENAM 2002, Galactic & Stellar Dynamics


Page(s)		203 - 203
DOI		https://doi.org/10.1051/eas:2003150
Published online		22 December 2003

JENAM 2002, Galactic & Stellar Dynamics
C. Boily, P. Patsis, S. Portegies Zwart, R. Spurzem and C. Theis (eds)
EAS Publications Series, 10 (2003) 203

Detection of water vapor maser in a narrow-line Seyfert 1 nucleus

Y. Hagiwara¹, P. J. Diamond, E. Rovilos² and M. Miyoshi³

¹ ASTRON, Westerbork Observatory, P.O. Box 2, Dwingeloo, 7990 AA, The Netherlands
² Jodrell Bank Observatory, University of Manchester, UK
³ National Astronomical Observatory, Mitaka, Japan

Abstract

We have discovered 22 GHz water vapor maser toward a narrow-line type 1 (NLS1) Seyfert galaxy, NGC4051. The detection of water masers in such galaxies is very rare. The Doppler-shifted maser components symmetrically straddle a component lying at about 712 km s^-1. The location of each maser component is of great interest for studying galactic dynamical structures around an active nucleus. We report on preliminary results of VLA observations.