The Low Redshift survey at Calar Alto (LoRCA)

	The Low Redshift survey at Calar Alto (LoRCA)
	Comparat, J.1,2; Chuang, C. -H.1; Rodriguez-Torres, S.1,2,3; Pellejero-Ibanez, M.4,5,6; Prada, F.1,3,7; Yepes, G.2; Courtois, H. M.8; Zhao, G. -B.9,10 ; Wang, Y.9,10; Sanchez, J.7
刊名	MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
	2016-05-21
卷号	458 期号:3 页码:2940-2952
关键词	galaxies: abundances cosmology: observations large-scale structure of Universe
英文摘要	The Baryon Acoustic Oscillation (BAO) feature in the power spectrum of galaxies provides a standard ruler to measure the accelerated expansion of the Universe. To extract all available information about dark energy, it is necessary to measure a standard ruler in the local, z < 0.2, universe where dark energy dominates most the energy density of the Universe. Though the volume available in the local universe is limited, it is just big enough to measure accurately the long 100 h(-1) Mpc wave-mode of the BAO. Using cosmological N-body simulations and approximate methods based on Lagrangian perturbation theory, we construct a suite of a thousand light-cones to evaluate the precision at which one can measure the BAO standard ruler in the local universe. We find that using the most massive galaxies on the full sky (34 000 deg(2)), i.e. a K-2MASS < 14 magnitude-limited sample, one can measure the BAO scale up to a precision of 4 per cent (similar to 1.2 per cent using reconstruction). We also find that such a survey would help to detect the dynamics of dark energy. Therefore, we propose a 3-year long observational project, named the Low Redshift survey at Calar Alto, to observe spectroscopically about 200 000 galaxies in the northern sky to contribute to the construction of aforementioned galaxy sample. The suite of light-cones is made available to the public.
收录类别	SCI
语种	英语
WOS记录号	WOS:000375799000049
内容类型	期刊论文
源URL	[http://ir.bao.ac.cn/handle/114a11/5372]
专题	国家天文台_星系宇宙学研究部
作者单位	1.Univ Autonoma Madrid, Inst Fis Teor, CSIC, E-28049 Madrid, Spain 2.Univ Autonoma Madrid, Dept Fis Teor, E-28049 Madrid, Spain 3.Campus Int Excellence UAM CSIC, E-28049 Madrid, Spain 4.Inst Astrofis Canarias, C Via Lactea S-N, E-38200 Tenerife, Spain 5.Univ La Laguna, Dept Astrofis, E-38206 Tenerife, Spain 6.IFT UAM CSIC, E-28049 Madrid, Spain 7.CSIC, Inst Astrofis Andalucia, E-18080 Granada, Spain 8.Univ Lyon, UCB Lyon CNRS IN2P3 1, Ipn Lyon, Lyon, France 9.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 10.Inst Cosmol & Gravitat, Dennis Sciama Bldg,Burnaby Rd, Portsmouth PO1 3FX, Hants, England
推荐引用方式 GB/T 7714	Comparat, J.,Chuang, C. -H.,Rodriguez-Torres, S.,et al. The Low Redshift survey at Calar Alto (LoRCA)[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2016,458(3):2940-2952.
APA	Comparat, J..,Chuang, C. -H..,Rodriguez-Torres, S..,Pellejero-Ibanez, M..,Prada, F..,...&Gonzalez Delgado, R. M..(2016).The Low Redshift survey at Calar Alto (LoRCA).MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,458(3),2940-2952.
MLA	Comparat, J.,et al."The Low Redshift survey at Calar Alto (LoRCA)".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 458.3(2016):2940-2952.