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dc.contributor.authorMohammad, Faizan G
dc.contributor.authorPercival, Will J
dc.contributor.authorSeo, Hee-Jong
dc.contributor.authorChapman, Michael J
dc.contributor.authorBianchi, D
dc.contributor.authorRoss, Ashley J
dc.contributor.authorZhao, Cheng
dc.contributor.authorLang, Dustin
dc.contributor.authorBautista, Julian
dc.contributor.authorBrinkmann, Jonathan
dc.contributor.authorBrownstein, Joel R
dc.contributor.authorBurtin, Etienne
dc.contributor.authorChuang, Chia-Hsun
dc.contributor.authorDawson, Kyle S
dc.contributor.authorde la Torre, Sylvain
dc.contributor.authorde Mattia, Arnaud
dc.contributor.authorEftekharzadeh, Sarah
dc.contributor.authorFromenteau, Sebastien
dc.contributor.authorGil-Marín, Héctor
dc.contributor.authorHou, Jiamin
dc.contributor.authorMueller, Eva-Maria
dc.contributor.authorNeveux, Richard
dc.contributor.authorPaviot, Romain
dc.contributor.authorRaichoor, Anand
dc.contributor.authorRossi, Graziano
dc.contributor.authorSchneider, Donald P
dc.contributor.authorTamone, Amélie
dc.contributor.authorTinker, Jeremy L
dc.contributor.authorTojeiro, Rita
dc.contributor.authorMagaña, Mariana Vargas
dc.contributor.authorZhao, Gong-Bo
dc.date.accessioned2020-11-23T12:30:15Z
dc.date.available2020-11-23T12:30:15Z
dc.date.issued2020-10
dc.identifier.citationMohammad , F G , Percival , W J , Seo , H-J , Chapman , M J , Bianchi , D , Ross , A J , Zhao , C , Lang , D , Bautista , J , Brinkmann , J , Brownstein , J R , Burtin , E , Chuang , C-H , Dawson , K S , de la Torre , S , de Mattia , A , Eftekharzadeh , S , Fromenteau , S , Gil-Marín , H , Hou , J , Mueller , E-M , Neveux , R , Paviot , R , Raichoor , A , Rossi , G , Schneider , D P , Tamone , A , Tinker , J L , Tojeiro , R , Magaña , M V & Zhao , G-B 2020 , ' The Completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey : pairwise-inverse probability and angular correction for fibre collisions in clustering measurements ' , Monthly Notices of the Royal Astronomical Society , vol. 498 , no. 1 , pp. 128–143 . https://doi.org/10.1093/mnras/staa2344en
dc.identifier.issn0035-8711
dc.identifier.otherPURE: 271271803
dc.identifier.otherPURE UUID: 0dfcd9ed-c44f-4b6d-a1d9-970bd5593cd7
dc.identifier.otherJisc: 481a09acd9f64fe782bf8ff91d702b79
dc.identifier.otherScopus: 85095609621
dc.identifier.otherWOS: 000587741300011
dc.identifier.urihttps://hdl.handle.net/10023/21041
dc.descriptionHJS is supported by the U.S. Department of Energy, Office of Science, Office of High Energy Physics under Award Number DE-SC0014329. Funding for the Sloan Digital Sky Survey IV has been provided by the Alfred P. Sloan Foundation, the U.S. Department of Energy Office of Science, and the Participating Institutions. SDSS-IV acknowledges support and resources from the Center for High-Performance Computing at the University of Utah. This project has received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation programme (grant agreement No 693024).en
dc.description.abstractThe completed extended Baryon Oscillation Spectroscopic Survey (eBOSS) catalogues contain redshifts of 344 080 quasars at 0.8 < z < 2.2, 174 816 luminous red galaxies between 0.6 < z < 1.0, and 173 736 emission-line galaxies over 0.6 < z < 1.1 in order to constrain the expansion history of the Universe and the growth rate of structure through clustering measurements. Mechanical limitations of the fibre-fed spectrograph on the Sloan telescope prevent two fibres being placed closer than 62 arcsec in a single pass of the instrument. These ‘fibre collisions’ strongly correlate with the intrinsic clustering of targets and can bias measurements of the two-point correlation function resulting in a systematic error on the inferred values of the cosmological parameters. We combine the new techniques of pairwise-inverse probability and the angular upweighting (PIP+ANG) to correct the clustering measurements for the effect of fibre collisions. Using mock catalogues, we show that our corrections provide unbiased measurements, within data precision, of both the projected wp(rp) and the redshift-space multipole ξ(ℓ = 0, 2, 4)(s) correlation functions down to 0.1h−1Mpc⁠, regardless of the tracer type. We apply the corrections to the eBOSS DR16 catalogues. We find that, on scales s≳20h−1Mpcs≳20h−1Mpc for ξℓ, as used to make baryon acoustic oscillation and large-scale redshift-space distortion measurements, approximate methods such as nearest-neighbour upweighting are sufficiently accurate given the statistical errors of the data. Using the PIP method, for the first time for a spectroscopic program of the Sloan Digital Sky Survey, we are able to successfully access the one-halo term in the clustering measurements down to ∼0.1h−1Mpc scales. Our results will therefore allow studies that use the small-scale clustering to strengthen the constraints on both cosmological parameters and the halo occupation distribution models.
dc.language.isoeng
dc.relation.ispartofMonthly Notices of the Royal Astronomical Societyen
dc.rightsCopyright © 2020 The Author(s). Published by Oxford University Press on behalf of the Royal Astronomical Society. This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the final published version of the work, which was originally published at https://doi.org/10.1093/mnras/staa2344.en
dc.subjectGalaxies: distances and redshiftsen
dc.subjectLarge-scale structure of Universeen
dc.subjectCosmology: observationsen
dc.subjectQC Physicsen
dc.subjectQB Astronomyen
dc.subjectDASen
dc.subject.lccQCen
dc.subject.lccQBen
dc.titleThe Completed SDSS-IV extended Baryon Oscillation Spectroscopic Survey : pairwise-inverse probability and angular correction for fibre collisions in clustering measurementsen
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews. School of Physics and Astronomyen
dc.identifier.doihttps://doi.org/10.1093/mnras/staa2344
dc.description.statusPeer revieweden


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