SPIDERS : the spectroscopic follow-up of X-ray-selected clusters of galaxies in SDSS-IV

Show full item record




Clerc , N , Merloni , A , Zhang , Y -Y , Finoguenov , A , Dwelly , T , Nandra , K , Collins , C , Dawson , K , Kneib , J -P , Rozo , E , Rykoff , E , Sadibekova , T , Brownstein , J , Lin , Y -T , Ridl , J , Salvato , M , Schwope , A , Steinmetz , M , Seo , H -J & Tinker , J 2016 , ' SPIDERS : the spectroscopic follow-up of X-ray-selected clusters of galaxies in SDSS-IV ' , Monthly Notices of the Royal Astronomical Society , vol. 463 , no. 4 , pp. 4490-4515 . https://doi.org/10.1093/mnras/stw2214

Title: SPIDERS : the spectroscopic follow-up of X-ray-selected clusters of galaxies in SDSS-IV
Author: Clerc, N.; Merloni, A.; Zhang, Y. -Y.; Finoguenov, A.; Dwelly, T.; Nandra, K.; Collins, C.; Dawson, K.; Kneib, J. -P.; Rozo, E.; Rykoff, E.; Sadibekova, T.; Brownstein, J.; Lin, Y. -T.; Ridl, J.; Salvato, M.; Schwope, A.; Steinmetz, M.; Seo, H. -J.; Tinker, J.
Contributor organization: Department of Physics
Date: 2016-12
Language: eng
Number of pages: 26
Belongs to series: Monthly Notices of the Royal Astronomical Society
ISSN: 0035-8711
DOI: https://doi.org/10.1093/mnras/stw2214
URI: http://hdl.handle.net/10138/183642
Abstract: SPIDERS (The SPectroscopic IDentification of eROSITA Sources) is a programme dedicated to the homogeneous and complete spectroscopic follow-up of X-ray active galactic nuclei and galaxy clusters over a large area (similar to 7500 deg(2)) of the extragalactic sky. SPIDERS is part of the Sloan Digital Sky Survey (SDSS)-IV project, together with the Extended Baryon Oscillation Spectroscopic Survey and the Time-Domain Spectroscopic Survey. This paper describes the largest project within SPIDERS before the launch of eROSITA: an optical spectroscopic survey of X-ray-selected, massive (similar to 10(14)-10(15) M-circle dot) galaxy clusters discovered in ROSAT and XMM-Newton imaging. The immediate aim is to determine precise (Delta(z) similar to 0.001) redshifts for 4000-5000 of these systems out to z similar to 0.6. The scientific goal of the program is precision cosmology, using clusters as probes of large-scale structure in the expanding Universe. We present the cluster samples, target selection algorithms and observation strategies. We demonstrate the efficiency of selecting targets using a combination of SDSS imaging data, a robust red-sequence finder and a dedicated prioritization scheme. We describe a set of algorithms and work-flow developed to collate spectra and assign cluster membership, and to deliver catalogues of spectroscopically confirmed clusters. We discuss the relevance of line-of-sight velocity dispersion estimators for the richer systems. We illustrate our techniques by constructing a catalogue of 230 spectroscopically validated clusters (0.031 <z <0.658), found in pilot observations. We discuss two potential science applications of the SPIDERS sample: the study of the X-ray luminosity-velocity dispersion (L-X-sigma) relation and the building of stacked phase-space diagrams.
Subject: catalogues
galaxies: clusters: general
cosmology: observations
X-rays: galaxies: clusters
115 Astronomy, Space science
Peer reviewed: Yes
Rights: unspecified
Usage restriction: openAccess
Self-archived version: publishedVersion

Files in this item

Total number of downloads: Loading...

Files Size Format View
stw2214.pdf 12.64Mb PDF View/Open

This item appears in the following Collection(s)

Show full item record