dc.contributor.author | Young, S. | |
dc.contributor.author | Axon, D.J. | |
dc.contributor.author | Robinson, A. | |
dc.contributor.author | Capetti, A. | |
dc.date.accessioned | 2009-07-13T08:38:19Z | |
dc.date.available | 2009-07-13T08:38:19Z | |
dc.date.issued | 2009 | |
dc.identifier.citation | Young , S , Axon , D J , Robinson , A & Capetti , A 2009 , ' The contribution from scattered light to quasar galaxy hosts ' , The Astrophysical Journal , vol. 698 , no. 2 , pp. L121-L124 . https://doi.org/10.1088/0004-637X/698/2/L121 | |
dc.identifier.issn | 0004-637X | |
dc.identifier.other | dspace: 2299/3656 | |
dc.identifier.uri | http://hdl.handle.net/2299/3656 | |
dc.description | Original article can be found at: http://www.iop.org/EJ/journal/apjl Copyright American Astronomical Society. DOI:10.1088/0004-637X/698/2/L121 [Full text of this article is not available in the UHRA] | |
dc.description.abstract | We present models representing the scattering of quasar radiation off free electrons and dust grains in geometries that approximate the structure of quasar host galaxies. We show that, for reasonable assumptions, scattering alone can easily produce ratios of nuclear (point source) to extended fluxes comparable to those determined in studies of quasar hosts. This result suggests that scattered quasar light, as well as stellar emission from the host galaxy, contributes significantly to the detected extended flux, leading to uncertainty in the inferred properties of quasar host. A significant contribution from scattered quasar light will lead to overestimates of the luminosity and hence mass of the host galaxy, and may also distort its morphology. Scattering of quasar light within the host galaxy may provide alternative explanations for the apparent peak in host luminosity at z = 2-3; possibly the overall average higher luminosity of radio-loud host galaxies relative to those of radio-quiet quasars (RQQs), and the apparent preference of high-luminosity RQQs for spheroidal rather than disk galaxies. | en |
dc.language.iso | eng | |
dc.relation.ispartof | The Astrophysical Journal | |
dc.title | The contribution from scattered light to quasar galaxy hosts | en |
dc.contributor.institution | School of Physics, Astronomy and Mathematics | |
dc.contributor.institution | School of Creative Arts | |
dc.description.status | Peer reviewed | |
rioxxterms.versionofrecord | 10.1088/0004-637X/698/2/L121 | |
rioxxterms.type | Journal Article/Review | |
herts.preservation.rarelyaccessed | true | |