University of Hertfordshire Research Archive

        JavaScript is disabled for your browser. Some features of this site may not work without it.

        Browse

        All of UHRABy Issue DateAuthorsTitlesThis CollectionBy Issue DateAuthorsTitles

        Arkivum Files

        My Downloads
        View Item 
        • UHRA Home
        • University of Hertfordshire
        • Research publications
        • View Item
        • UHRA Home
        • University of Hertfordshire
        • Research publications
        • View Item

        A time-variable scattered component to broad Hα in the Seyfert 1 galaxy Mrk 509

        Author
        Young, S.
        Corbett, S.A.
        Giannuzzo, M.E.
        Hough, J.
        Robinson, A.
        Bailey, J.
        Axon, D.J.
        Attention
        2299/3185
        Abstract
        We present optical spectropolarimetry data for the Seyfert 1 galaxy Mrk 509 for three epochs: 1996 August and 1997 May and August. We confirm previous findings that broad Hα has a significantly greater width in the polarized flux spectrum than in total flux, and that the observed polarization is variable on relatively short time-scales, implying, for scattering, that at least some of the polarization originates in a compact region. We also find evidence that the observed changes in the degree of polarization (for the continuum and broad wings of Hα) and the associated position angle swing (for the continuum) are similar in pattern to previously observed polarimetry variations. We determine that a multicomponent scattering region is the most likely origin for the observed polarization of Mrk 509. The scattering appears to originate from three regions, which we identify with observed or expected components of the active galaxy. The proposed scenario is completely consistent with the unified theory of active galaxies.
        Publication date
        1999
        Published in
        Monthly Notices of the Royal Astronomical Society
        Published version
        https://doi.org/10.1046/j.1365-8711.1999.02183.x
        Other links
        http://hdl.handle.net/2299/3185
        Metadata
        Show full item record
        Keep in touch

        © 2019 University of Hertfordshire

        I want to...

        • Apply for a course
        • Download a Prospectus
        • Find a job at the University
        • Make a complaint
        • Contact the Press Office

        Go to...

        • Accommodation booking
        • Your student record
        • Bayfordbury
        • KASPAR
        • UH Arts

        The small print

        • Terms of use
        • Privacy and cookies
        • Criminal Finances Act 2017
        • Modern Slavery Act 2015
        • Sitemap

        Find/Contact us

        • T: +44 (0)1707 284000
        • E: ask@herts.ac.uk
        • Where to find us
        • Parking
        • hr
        • qaa
        • stonewall
        • AMBA
        • ECU Race Charter
        • disability confident
        • AthenaSwan