Maqola

The SDSS-IV Extended Baryon Oscillation Spectroscopic Survey: Baryon Acoustic Oscillations at Redshift of 0.72 with the DR14 Luminous Red Galaxy Sample

Julian BautistaDepartment of Physics and Astronomy, University of Utah, Salt Lake City, UT 84112, USA; [email protected]Mariana Vargas-MagañaInstituto de Fisíca, Universidad Nacional Autonoma de Mexico, Apdo. Postal 20-364, 01000, D.F., MexicoKyle DawsonDepartment of Physics and Astronomy, University of Utah, Salt Lake City, UT 84112, USA; [email protected]Will J. PercivalInstitute of Cosmology & Gravitation, Dennis Sciama Building, University of Portsmouth, Portsmouth, PO1 3FX, UKJonathan BrinkmannApache Point Observatory, P.O. Box 59, Sunspot, NM 88349, USAJoel R. BrownsteinDepartment of Physics and Astronomy, University of Utah, Salt Lake City, UT 84112, USA; [email protected]Benjamin CamachoInstituto de Fisíca, Universidad Nacional Autonoma de Mexico, Apdo. Postal 20-364, 01000, D.F., MexicoJohan ComparatMax-Planck-Institut für Extraterrestrische Physik, Giessenbachstraße, D-85748 Garching, GermanyHector Gil-MarínLPNHE, CNRS/IN2P3, Université Pierre et Marie Curie Paris 6, Université Denis Diderot Paris 7, 4 place Jussieu, F-75252 Paris CEDEX, FranceEva-Maria MuellerInstituto de Fisíca, Universidad Nacional Autonoma de Mexico, Apdo. Postal 20-364, 01000, D.F., MexicoJeffrey A. NewmanDepartment of Physics and Astronomy and PITT PACC, University of Pittsburgh, Pittsburgh, PA 15260, USAAbhishek PrakashInfrared Processing and Analysis Center, California Institute of Technology, MC 100-22, Pasadena, CA 91125, USAAshley J. RossCenter for Cosmology and Astro-Particle Physics, Ohio State University, Columbus, OH 43210, USADonald P. SchneiderDepartment of Astronomy and Astrophysics, 525 Davey Laboratory, The Pennsylvania State University, University Park, PA 16802, USAHee-Jong SeoDepartment of Physics and Astronomy, Ohio University, 251B Clippinger Labs, Athens, OH 45701, USAJeremy TinkerCenter for Cosmology and Particle Physics, Department of Physics, New York University, 4 Washington Place, New York, NY 10003, USARita TojeiroSchool of Physics and Astronomy, University of St Andrews, St Andrews, KY16 9SS, UKZhongxu ZhaiCenter for Cosmology and Particle Physics, Department of Physics, New York University, 4 Washington Place, New York, NY 10003, USAGong-Bo ZhaoCollege of Astronomy and Space Sciences, University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China

2018en

ABI

Annotatsiya

Abstract The extended Baryon Oscillation Spectroscopic Survey (eBOSS) Data Release 14 sample includes 80,118 luminous red galaxies (LRGs). By combining these galaxies with the high-redshift tail of the BOSS galaxy sample, we form a sample of LRGs at an effective redshift z = 0.72, covering an effective volume of 0.9 Gpc 3 . We account for spurious fluctuations caused by targeting and by redshift failures, which were validated on a set of mock catalogs. This analysis is sufficient to provide a 2.5% measurement of spherically averaged baryon acoustic oscillations (BAO), Mpc, at 2.8 σ of significance. Together with the recent quasar-based BAO measurement at z = 1.5 and forthcoming emission line galaxy–based measurements, this measurement demonstrates that eBOSS is fulfilling its remit of extending the range of redshifts covered by such measurements, laying the groundwork for forthcoming surveys such as the Dark Energy Spectroscopic Survey and Euclid.

Hali tarjima qilinmagan

Identifikatorlar

DOI: 10.3847/1538-4357/aacea5

Iqtiboslar va manbalar

10 ta iqtibos0 ta foydalanilgan manba

Koʻrsatkichlar — AkademScholar