dc.contributor.author | Gunn, KF | |
dc.contributor.author | McHardy, IM | |
dc.contributor.author | Almaini, O | |
dc.contributor.author | Shanks, T | |
dc.contributor.author | Sumner, TJ | |
dc.contributor.author | Muxlow, TWB | |
dc.contributor.author | Efstathiou, A | |
dc.contributor.author | Jones, LR | |
dc.contributor.author | Croom, SM | |
dc.contributor.author | Manners, JC | |
dc.contributor.author | Newsam, AM | |
dc.contributor.author | Mason, KO | |
dc.contributor.author | Serjeant, SBG | |
dc.contributor.author | Rowan-Robinson, M | |
dc.date.accessioned | 2020-01-10T16:17:13Z | |
dc.date.issued | 2001-06-11 | |
dc.description.abstract | We present multiwaveband photometric and optical spectropolarimetric observations of the R=15. 9 narrow emission-line galaxy R117_A which lies on the edge of the error circle of the ROSAT X-ray source R117. The overall spectral energy distribution of the galaxy is well modelled by a combination of a normal spiral galaxy and a moderate-strength burst of star formation. The far-infrared and radio emission is extended along the major axis of the galaxy, indicating an extended starburst.
On positional grounds, the galaxy is a good candidate for the identification of R117, and the observed X-ray flux is very close to what would be expected from a starburst of the observed far-infrared and radio fluxes. Although an obscured high-redshift QSO cannot be entirely ruled out as contributing some fraction of the X-ray flux, we find no candidates to K=20. 8 within the X-ray error box, and so conclude that R117_A is responsible for a large fraction, if not all, of the X-ray emission from R117.
Searches for indicators of an obscured AGN in R117_A have so far proven negative; deep spectropolarimetric observations show no signs of broad lines to a limit of 1 per cent and, for the observed far-infrared and radio emission, we would expect 10 times greater X-ray flux if the overall emission were powered by an AGN. We therefore conclude that the X-ray emission from R117 is dominated by starburst emission from the galaxy R117_A. | en_GB |
dc.identifier.citation | Vol. 324, no.2, pp. 305 - 312 | en_GB |
dc.identifier.doi | 10.1046/j.1365-8711.2001.04144.x | |
dc.identifier.uri | http://hdl.handle.net/10871/40361 | |
dc.language.iso | en | en_GB |
dc.publisher | Oxford University Press (OUP) | en_GB |
dc.rights | Copyright © 2020 The Royal Astronomical Society | en_GB |
dc.subject | X-rays: galaxies | en_GB |
dc.subject | galaxies: starburst | en_GB |
dc.title | Starburst activity in aROSATnarrow emission-line galaxy | en_GB |
dc.type | Article | en_GB |
dc.date.available | 2020-01-10T16:17:13Z | |
dc.identifier.issn | 0035-8711 | |
dc.description | This is the final version. Available from Oxford University Press via the DOI in this record. | en_GB |
dc.identifier.journal | Monthly Notices of the Royal Astronomical Society | en_GB |
dc.rights.uri | http://www.rioxx.net/licenses/all-rights-reserved | en_GB |
dcterms.dateAccepted | 2001 | |
rioxxterms.version | VoR | en_GB |
rioxxterms.licenseref.startdate | 2001-06-11 | |
rioxxterms.type | Journal Article/Review | en_GB |
refterms.dateFCD | 2020-01-10T16:12:17Z | |
refterms.versionFCD | VoR | |
refterms.dateFOA | 2020-01-10T16:17:20Z | |
refterms.panel | B | en_GB |