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THE SDSS-IV EXTENDED BARYON OSCILLATION SPECTROSCOPIC SURVEY: OVERVIEW AND EARLY DATA
文献类型：期刊论文
| 作者 | Dawson, Kyle S.1; Kneib, Jean -Paul2,3; Percival, Will J.4; Alam, Shadab5; Albareti, Franco D.6; Anderson, Scott F.7; Armengaud, Eric8; Aubourg, Eric9; Bailey, Stephen10; Bautista, Julian E.1 |
| 刊名 | ASTRONOMICAL JOURNAL
 |
| 出版日期 | 2016-02-01 |
| 卷号 | 151期号:2 |
| 关键词 | cosmology: observations surveys |
| 英文摘要 | In a six-year program started in 2014 July, the Extended Baryon Oscillation Spectroscopic Survey (eBOSS) will conduct novel cosmological observations using the BOSS spectrograph at Apache Point Observatory. These observations will be conducted simultaneously with the Time Domain Spectroscopic Survey (TDSS) designed for variability studies and the Spectroscopic Identification of eROSITA Sources (SPIDERS) program designed for studies of X-ray sources. In particular, eBOSS will measure with percent-level precision the distance-redshift relation with baryon acoustic oscillations (BAO) in the clustering of matter. eBOSS will use four different tracers of the underlying matter density field to vastly expand the volume covered by BOSS and map the large-scale-structures over the relatively unconstrained redshift range 0.6 < z < 2.2. Using more than 250,000 new, spectroscopically confirmed luminous red galaxies at a median redshift z = 0.72, we project that eBOSS will yield measurements of the angular diameter distance d(A)(z) to an accuracy of 1.2% and measurements of H(z) to 2.1% when combined with the z > 0.6 sample of BOSS galaxies. With similar to 195,000 new emission line galaxy redshifts, we expect BAO measurements of d(A)(z) to an accuracy of 3.1% and H(z) to 4.7% at an effective redshift of z = 0.87. A sample of more than 500,000 spectroscopically confirmed quasars will provide the first BAO distance measurements over the redshift range 0.9 < z < 2.2, with expected precision of 2.8% and 4.2% on d(A)(z) and H(z), respectively. Finally, with 60,000 new quasars and re-observation of 60,000 BOSS quasars, we will obtain new Lya forest measurements at redshifts z > 2.1; these new data will enhance the precision of d(A)(z) and H(z) at z > 2.1 by a factor of 1.44 relative to BOSS. Furthermore, eBOSS will provide improved tests of General Relativity on cosmological scales through redshift-space distortion measurements, improved tests for non-Gaussianity in the primordial density field, and new constraints on the summed mass of all neutrino species. Here, we provide an overview of the cosmological goals, spectroscopic target sample, demonstration of spectral quality from early data, and projected cosmological constraints from eBOSS. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000371248600024 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/5395]  |
| 专题 | 国家天文台_光学天文研究部 |
| 作者单位 | 1.Univ Utah, Dept Phys & Astron, Salt Lake City, UT 84112 USA 2.Ecole Polytech Fed Lausanne, Observ Sauverny, Astrophys Lab, CH-1290 Versoix, Switzerland 3.Aix Marseille Univ, CNRS, LAM, UMR 7326, F-13388 Marseille, France 4.Univ Portsmouth, Inst Cosmol & Gravitat, Dennis Sciama Bldg, Portsmouth PO1 3FX, Hants, England 5.Carnegie Mellon Univ, Dept Phys, Bruce & Astrid McWilliams Ctr Cosmol, 5000 Forbes Ave, Pittsburgh, PA 15213 USA 6.Univ Autonoma Madrid, CSIC, Inst Fis Teor, E-28049 Madrid, Spain 7.Univ Washington, Dept Astron, Box 351580, Seattle, WA 98195 USA 8.CEA, Ctr Saclay, Irfu SPP, F-91191 Gif Sur Yvette, France 9.Univ Paris Diderot, APC, CNRS IN2P3, CEA IRFU,Observ Paris,Sorbonne Paris Cite, Paris, France 10.Univ Calif Berkeley, Lawrence Berkeley Natl Lab, One Cyclotron Rd, Berkeley, CA 94720 USA |
| 推荐引用方式 GB/T 7714 | Dawson, Kyle S.,Kneib, Jean -Paul,Percival, Will J.,et al. THE SDSS-IV EXTENDED BARYON OSCILLATION SPECTROSCOPIC SURVEY: OVERVIEW AND EARLY DATA[J]. ASTRONOMICAL JOURNAL,2016,151(2). |
| APA | Dawson, Kyle S..,Kneib, Jean -Paul.,Percival, Will J..,Alam, Shadab.,Albareti, Franco D..,...&Zou, Hu.(2016).THE SDSS-IV EXTENDED BARYON OSCILLATION SPECTROSCOPIC SURVEY: OVERVIEW AND EARLY DATA.ASTRONOMICAL JOURNAL,151(2). |
| MLA | Dawson, Kyle S.,et al."THE SDSS-IV EXTENDED BARYON OSCILLATION SPECTROSCOPIC SURVEY: OVERVIEW AND EARLY DATA".ASTRONOMICAL JOURNAL 151.2(2016). |
入库方式： OAI收割
来源：国家天文台
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