Show simple item record

dc.creatorBanados, Eduardoen_US
dc.creatorVenemans, Bramen_US
dc.creatorWalter, Fabianen_US
dc.creatorKurk, Jaronen_US
dc.creatorOverzier, Roderiken_US
dc.creatorOuchi, Masamien_US
dc.date.accessioned2016-04-28T19:38:24Z
dc.date.available2016-04-28T19:38:24Z
dc.date.issued2013-08en
dc.identifierdoi:10.15781/T2W23Z
dc.identifier.citationBa�ados, Eduardo, Bram Venemans, Fabian Walter, Jaron Kurk, Roderik Overzier, and Masami Ouchi. "The galaxy environment of a QSO at z~ 5.7." The Astrophysical Journal, Vol. 773, No. 2 (Aug., 2013): 178.en_US
dc.identifier.issn0004-637Xen_US
dc.identifier.urihttp://hdl.handle.net/2152/34990
dc.description.abstractHigh-redshift quasars are believed to reside in massive halos in the early universe and should therefore be located in fields with overdensities of galaxies, which are thought to evolve into galaxy clusters seen in the local universe. However, despite many efforts, the relationship between galaxy overdensities and z similar to 6 quasars is ambiguous. This can possibly be attributed to the difficulty of finding galaxies with accurate redshifts in the vicinity of z similar to 6 quasars. So far, overdensity searches around z similar to 6 quasars have been based on studies of Lyman break galaxies (LBGs), which probe a redshift range of Delta z approximate to 1. This range is large enough to select galaxies that may not be physically related to the quasar. We use deep narrow- and broadband imaging to study the environment of the z = 5.72 quasar ULAS J0203+0012. The redshift range probed by our narrow- band selection of Lyman alpha emitters (LAEs) is Delta z approximate to 0.1, which is significantly narrower than the LBG searches. This is the first time that LAEs were searched for near a z similar to 6 quasar, in an effort to provide clues about the environments of quasars at the end of the epoch of reionization. We find no enhancement of LAEs in the surroundings of ULAS J0203+0012 in comparison with blank fields. We explore different explanations and interpretations for this non-detection of a galaxy overdensity, including that (1) the strong ionization from the quasar may prevent galaxy formation in its immediate vicinity and (2) high-redshift quasars may not reside in the center of the most massive dark matter halos.en_US
dc.description.sponsorshipESO Telescopes at the La Silla Paranal Observatory 385.A-0030(A)en_US
dc.language.isoEnglishen_US
dc.relation.ispartofen_US
dc.rightsAdministrative deposit of works to Texas ScholarWorks: This works author(s) is or was a University faculty member, student or staff member; this article is already available through open access or the publisher allows a PDF version of the article to be freely posted online. The library makes the deposit as a matter of fair use (for scholarly, educational, and research purposes), and to preserve the work and further secure public access to the works of the University.en_US
dc.subjectgalaxies: formationen_US
dc.subjectgalaxies: high-redshiften_US
dc.subjectquasars: individual (ulasen_US
dc.subjectj0203+0012)en_US
dc.subjectdigital sky surveyen_US
dc.subjectly-alpha emittersen_US
dc.subjectsubaru-deep-fielden_US
dc.subjectgreater-thanen_US
dc.subject6en_US
dc.subjectstar-forming galaxiesen_US
dc.subjectlyman-break galaxiesen_US
dc.subjecti'-dropout galaxiesen_US
dc.subjectblack-hole massesen_US
dc.subjectz-similar-to-6 quasarsen_US
dc.subjectnb921-band depressionen_US
dc.subjectastronomy & astrophysicsen_US
dc.titleThe Galaxy Environment Of A QSO At Z Similar To 5.7en_US
dc.typeArticleen_US
dc.description.departmentAstronomyen_US
dc.identifier.Filename2013_08_galaxyenvironment.pdfen_US
dc.rights.restrictionOpenen_US
dc.identifier.doi10.1088/0004-637x/773/2/178en_US
dc.contributor.utaustinauthorOverzier, Roderiken_US
dc.relation.ispartofserialAstrophysical Journalen_US


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record