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Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/2311
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dc.contributor.authorSato, Naoko-
dc.contributor.authorYamauchi, Aya-
dc.contributor.authorIshihara, Yuko-
dc.contributor.authorSorai, Kazuo-
dc.contributor.authorKuno, Nario-
dc.contributor.authorNakai, Naomasa-
dc.contributor.authorBalasubramanyam, R.-
dc.contributor.authorHall, Peter-
dc.date.accessioned2007-05-15T10:09:26Z-
dc.date.available2007-05-15T10:09:26Z-
dc.date.issued2005-08-
dc.identifier.citationPublications of the Astronomical Society of Japan, 2005, Vol.57, No.4, p. 587-594en
dc.identifier.issn0004-6264-
dc.identifier.urihttp://hdl.handle.net/2289/2311-
dc.descriptionRestricted Access.en
dc.description.abstractWe made a survey of water-vapor maser emission for 93 AGNs with the Nobeyama 45-m and Mopra 22-m telescopes from 1999 to 2002. A megamaser was detected in a Seyfert 2 galaxy, NGC 6926, at a distance of 80Mpc, in 2002 June. [Greenhill et al. (2003a) have also reported a detection of the megamaser at the close date.] The peak flux density was 110mJy, and the total isotropic luminosity was 340 Lȯ. The maser shows triply peaked spectrum, suggesting an edge-on disk. A narrow-line feature of the maser components at VLSR = 6001 km s-1 was strongly variable with a time scale of a few tens of days, and the variation should be of intrinsic origin. We also showed a possibility of variability of water-vapor maser emission of a megamaser previously detected in a Seyfert/ultraluminous FIR galaxy, NGC 6240.en
dc.format.extent374872 bytes-
dc.format.mimetypeapplication/pdf-
dc.language.isoenen
dc.publisherAstronomical Society of Japanen
dc.relation.urihttp://adsabs.harvard.edu/cgi-bin/bib_query?2005PASJ...57..587Sen
dc.rights2005 Astronomical Society of Japanen
dc.subjectGalaxies: activeen
dc.subjectgalaxies: individual (NGC 6240, NGC 6926)en
dc.subjectGalaxies: Seyferten
dc.subjectMasersen
dc.subjectGalaxies - radio linesen
dc.titleWater-vapor maser survey for active galactic nuclei: A megamaser in NGC 6926en
dc.typeArticleen
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