Show simple item record

dc.contributor.authorGinolfi, Micheleen
dc.contributor.authorMaiolino, Robertoen
dc.contributor.authorCarniani, Stefanoen
dc.contributor.authorBattaia, Fabrizio Arrigonien
dc.contributor.authorCantalupo, Sebastianoen
dc.contributor.authorSchneider, Raffaellaen
dc.date.accessioned2018-07-23T12:12:15Z
dc.date.available2018-07-23T12:12:15Z
dc.identifier.issn0035-8711
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/278401
dc.description.abstractIn this work we report deep MUSE observations of a broad absorption line (BAL) quasar at z ∼ 5, revealing a Ly α nebula with a maximum projected linear size of ∼60 kpc around the quasar (down to our 2σ SB limit per layer of ∼9×10−19ergs−1cm−2arcsec−2 for a 1 arcsec2 aperture). After correcting for the cosmological surface brightness dimming, we find that our nebula, at z ∼ 5, has an intrinsically less extended Ly α emission than nebulae at lower redshift. However, such a discrepancy is greatly reduced when referring to comoving distances, which take into account the cosmological growth of dark matter (DM) haloes, suggesting a positive correlation between the size of Ly α nebulae and the sizes of DM haloes/structures around quasars. Differently from the typical nebulae around radio-quiet non-BAL quasars, in the inner regions (∼10 kpc) of the circumgalactic medium of our source, the velocity dispersion of the Ly α emission is very high (FWHM > 1000 km s−1), suggesting that in our case we may be probing outflowing material associated with the quasar.
dc.description.sponsorshipThe research leading to these results has received funding from the European Research Council (ERC) under the European Union's Seventh Framework Programme (FP/2007-2013) / ERC Grant Agreement no. 306476. RM acknowledges support from the ERC Advanced Grant 695671 ‘QUENCH’. RM and S. Carniani acknowledge support from the Science and Technology Facilities Council (STFC). S. Cantalupo gratefully acknowledges support from Swiss National Science Foundation grant PP00P2_163824.
dc.publisherOxford University Press
dc.subjectgalaxies: haloesen
dc.subjectintergalactic mediumen
dc.subjectquasars: emission linesen
dc.subjectquasars: generalen
dc.subjectcosmology: observationsen
dc.titleExtended and broad Ly α emission around a BAL quasar at z ∼ 5en
dc.typeArticle
prism.endingPage2431
prism.issueIdentifier2en
prism.publicationNameMonthly Notices of the Royal Astronomical Societyen
prism.startingPage2421
prism.volume476en
dc.identifier.doi10.17863/CAM.22877
dcterms.dateAccepted2018-02-05en
rioxxterms.versionofrecord10.1093/mnras/sty364en
rioxxterms.versionVoR*
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserveden
rioxxterms.licenseref.startdate2018-02-05en
dc.contributor.orcidMaiolino, Roberto [0000-0002-4985-3819]
dc.contributor.orcidCarniani, Stefano [0000-0002-6719-380X]
dc.identifier.eissn1365-2966
rioxxterms.typeJournal Article/Reviewen
pubs.funder-project-idSTFC (ST/M001172/1)
pubs.funder-project-idECH2020 EUROPEAN RESEARCH COUNCIL (ERC) (695671)
cam.issuedOnline2018-02-10en


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record