English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/150400
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Title

The low redshift survey at calar alto (LoRCA)

AuthorsComparat, Johan; Chuang, C.H.; Rodríguez-Torres, S.; Pellejero-Ibanez, M.; Prada, Francisco ; Yepes, G.; Sánchez del Río, Justo ; Peiro-Perez, J.; Pérez Jiménez, Enrique ; González Delgado, Rosa M.
KeywordsCosmology: Observations
Galaxies: Abundances
Large-scale structure of Universe
Issue Date2016
PublisherOxford University Press
CitationMonthly Notices of the Royal Astronomical Society 458: 2940- 2952 (2016)
AbstractThe 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 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), i.e. a K < 14 magnitude-limited sample, one can measure the BAO scale up to a precision of 4 per cent (~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. © 2016 The Authors.
URIhttp://hdl.handle.net/10261/150400
DOI10.1093/mnras/stw326
Identifiersdoi: 10.1093/mnras/stw326
issn: 1365-2966
Appears in Collections:(IAA) Artículos
(IFT) Artículos
Files in This Item:
File Description SizeFormat 
IAA_2016_MNRASstw326.pdf2,3 MBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.