J/A+A/635/A157ivo://CDS.VizieR/J/A+A/635/A157doi:10.26093/cds/vizier.36350157CDSTravascio A.Zappacosta L.Cantalupo S.Piconcelli E.,Arrigoni Battaia F.Ginolfi M.Bischetti M.Vietri G.Bongiorno A.,D'Odorico V.Duras F.Feruglio C.Vignali C.Fiore F.2020-05-07T10:51:04Z2020-03-27T06:24:04ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.fractive-galactic-nucleiquasarsvisible-astronomyIn recent years, Ly{alpha} nebulae have been routinely detected around high redshift, radio-quiet quasars thanks to the advent of the highly sensitive integral field spectrographs. Constraining the physical properties of the Ly{alpha} nebulae is crucial for a full understanding of the circum-galactic medium (CGM). The CGM acts both as a repository for intergalactic and galactic baryons as well as a venue of feeding and feedback processes. The most luminous quasars are privileged test-beds to study these processes, given their large ionising fluxes and dense CGM environments in which they are expected to be embedded.We aim to characterise the rest-frame ultraviolet (UV) emission lines in the CGM around a hyper-luminous, broad emission line, radio-quiet quasar at z~3.6, which exhibits powerful outflows at both nuclear and host galaxy scales.We analyse VLT/MUSE observations of the quasar J1538+08 (Lbol=6*10^47^erg/s), and we performed a search for extended UV emission lines to characterise its morphology, emissivity, kinematics, and metal content.We report the discovery of a very luminous (2*10^44^erg/s), giant (150kpc) Ly{alpha} nebula and a likely associated extended (75kpc) CIV nebula. The Ly{alpha} nebula emission exhibits moderate blueshift (440km/s) compared to the quasar systemic redshift and a large average velocity dispersion (700km/s) across the nebula, while the CIV nebula shows average velocity dispersion of 350km/s. The Ly{alpha} line profile exhibits a significant asymmetry towards negative velocity values at 20-30kpc south of the quasar and is well parametrised by the following two Gaussian components: a narrow (470km/s) systemic one plus a broad (1200km/s), blueshifted (1500km/s) one. Our analysis of the MUSE observation of J1538+08 reveals metal-enriched CGM around this hyper-luminous quasar. Furthermore, our detection of blueshifted emission in the emission profile of the Ly{alpha} nebula suggests that powerful nuclear outflows can propagate through the CGM over tens of kiloparsecs.2020A&A...635A.157Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/635/A157CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/635/A157https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/635/A157http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/635/A157https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/635/A157https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/635/A157http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/635/A157GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/635/A157/list (Information on datacube)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/635/A157/list?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/635/A157/list?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/635/A157/list?GETtext/xml+votable180.050000true234.626388.92220.0055555555555555566/8276https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/635/A157?format=asciiOpticaldefaultJ/A+A/635/A157/listInformation on datacuberecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right Ascension of center (J2000)degpos.eq.ra;meta.mainDEJ2000Declination of center (J2000)degpos.eq.dec;meta.mainscaleScale of the imagearcsec/pixinstr.scalefloatNxNumber of pixels along X-axismeta.numberintNyNumber of pixels along Y-axismeta.numberintNzNumber of pixels along Z-axismeta.numberintblambdaLower value of wavelength interval0.1nmem.wlfloatBlambdaUpper value of wavelength interval0.1nmem.wlfloatdlambdaWavelength resolution0.1nmspect.resolutionfloatsizeSize of FITS fileKibytephys.size;meta.fitsintFileNameName of FITS file, in subdirectory fitsmeta.id;meta.fitscharTitleTitle of the FITS filemeta.title;meta.fitschar