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Detection of water vapor maserin a narrow-line Seyfert 1 nucleus

Published online by Cambridge University Press:  22 December 2003

Y. Hagiwara
Affiliation:
ASTRON, Westerbork Observatory, P.O. Box 2, Dwingeloo, 7990 AA, The Netherlands
E. Rovilos
Affiliation:
Jodrell Bank Observatory, University of Manchester, UK
M. Miyoshi
Affiliation:
National Astronomical Observatory, Mitaka, Japan
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Abstract

We have discovered 22 GHz water vapor maser toward a narrow-line type 1 (NLS1) Seyfert galaxy, NGC4051. The detection of water masers insuch galaxies is very rare. The Doppler-shifted maser componentssymmetrically straddle a component lying at about 712 km s-1. Thelocation of each maser component is of great interest for studyinggalactic dynamical structures around an active nucleus. We report onpreliminary results of VLA observations.

Type
Research Article
Copyright
© EAS, EDP Sciences, 2003

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