Optical validation and characterization of Planck PSZ2 sources at the Canary Islands observatories. II. Second year of LP15 observations

Abstract

We present the second and last year of observations of our optical follow-up programme 128-MULTIPLE-16/15B (LP15 )at Roque de los Muchachos Observatory (La Palma), which has been developed with the aim of validating all the unidentified PSZ2 sources in the northern sky, with declination above -15deg, and with no correspondence in the first Planck catalogue PSZ1. We adopt a robust confirmation criteria based on velocity dispersion and richness estimations in order to carry out the final classification of the new galaxy clusters as the optical counterparts of the PSZ2 detections. We also present final results of the programme, showing an update of the purity and completeness of the PSZ2 sample. After the LP15 programme, we find that the purity of the PSZ2 has increased from 76.7% originally to 86.2%. In addition, we study the possible reasons of having false detection, and we report a clear correlation between the number of unconfirmed sources and galactic thermal dust emission.

arXiv commentto be published in A&A. Now "in press"

References in corpus (38)

• The Sloan Digital Sky Survey: Technical Summary
• Seven-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Cosmological Interpretation
• The Wide-field Infrared Survey Explorer (WISE): Mission Description and Initial On-orbit Performance
• HEALPix -- a Framework for High Resolution Discretization, and Fast Analysis of Data Distributed on the Sphere
• The USNO-B Catalog
• Planck 2013 results. I. Overview of products and scientific results
• Cosmological Parameters from Observations of Galaxy Clusters
• Planck 2013 results. XI. All-sky model of thermal dust emission
• redMaPPer I: Algorithm and SDSS DR8 Catalog
• Galaxy Clusters Discovered via the Sunyaev-Zel'dovich Effect in the 2500-square-degree SPT-SZ survey
• A New Method For Galaxy Cluster Detection I: The Algorithm
• The SuperCOSMOS Sky Survey. Paper I: Introduction and Description
• The MCXC: a Meta-Catalogue of X-ray detected Clusters of galaxies
• Planck 2013 results. XXIX. Planck catalogue of Sunyaev-Zeldovich sources
• Planck 2015 results. XXIV. Cosmology from Sunyaev-Zeldovich cluster counts
• The Atacama Cosmology Telescope: Sunyaev-Zel'dovich Selected Galaxy Clusters at 148 GHz from Three Seasons of Data
• A catalog of 132,684 clusters of galaxies identified from Sloan Digital Sky Survey III
• Planck 2015 results. XXVII. The Second Planck Catalogue of Sunyaev-Zeldovich Sources
• The relation between velocity dispersion and mass in simulated clusters of galaxies: dependence on the tracer and the baryonic physics
• Planck 2015 results. XXII. A map of the thermal Sunyaev-Zeldovich effect
• The 2dF Galaxy Redshift Survey: A targeted study of catalogued clusters of galaxies
• eROSITA on SRG
• Planck intermediate results. XXVI. Optical identification and redshifts of Planck clusters with the RTT150 telescope
• Planck Intermediate Results. I. Further validation of new Planck clusters with XMM-Newton
• Planck Intermediate Results. XXXVI. Optical identification and redshifts of Planck SZ sources with telescopes in the Canary Islands Observatories
• A sample of 1959 massive galaxy clusters at high redshifts
• Optical validation and characterization of Planck PSZ1 sources at the Canary Islands observatories. I. First year of ITP13 observations
• Optical identifications of high-redshift galaxy clusters from Planck Sunyaev-Zeldovich survey
• An extension of the Planck galaxy cluster catalogue
• Comparison of Sunyaev-Zel'dovich measurements from Planck and from the Arcminute Microkelvin Imager for 99 galaxy clusters
• Optical & Sunyaev-Zel'dovich Observations of a New Sample of Distant Rich Galaxy Clusters in the ROSAT All Sky Survey
• The Good, the Bad and the Ugly: Statistical quality assessment of SZ detections
• Characterization of a subsample of the Planck SZ source cluster catalogues using optical SDSS DR12 data
• An alternative validation strategy for the Planck cluster catalog and $y$-distortion maps
• Spectroscopic confirmation and velocity dispersions for twenty Planck galaxy clusters at 0.16<z<0.78
• Prospects for high-z cluster detections with Planck, based on a follow-up of 28 candidates using MegaCam@CFHT
• Optical validation and characterization of \Planck\ PSZ2 sources at the Canary Islands observatories. I. First year of LP15 observations
• Optical follow-up study of 32 high-redshift galaxy cluster candidates from Planck with the William Herschel Telescope

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