Planck intermediate results. LV. Reliability and thermal properties of high-frequency sources in the Second Planck Catalogue of Compact Sources

Abstract

We describe an extension of the most recent version of the Planck Catalogue of Compact Sources (PCCS2), produced using a new multi-band Bayesian Extraction and Estimation Package (BeeP). BeeP assumes that the compact sources present in PCCS2 at 857 GHz have a dust-like spectral energy distribution, which leads to emission at both lower and higher frequencies, and adjusts the parameters of the source and its SED to fit the emission observed in Planck's three highest frequency channels at 353, 545, and 857 GHz, as well as the IRIS map at 3000 GHz. In order to reduce confusion regarding diffuse cirrus emission, BeeP's data model includes a description of the background emission surrounding each source, and it adjusts the confidence in the source parameter extraction based on the statistical properties of the spatial distribution of the background emission. BeeP produces the following three new sets of parameters for each source: (a) fits to a modified blackbody (MBB) thermal emission model of the source; (b) SED-independent source flux densities at each frequency considered; and (c) fits to an MBB model of the background in which the source is embedded. BeeP also calculates, for each source, a reliability parameter, which takes into account confusion due to the surrounding cirrus. We define a high-reliability subset (BeeP/base), containing 26 083 sources (54.1 per cent of the total PCCS2 catalogue), the majority of which have no information on reliability in the PCCS2. The results of the BeeP extension of PCCS2, which are made publicly available via the PLA, will enable the study of the thermal properties of well-defined samples of compact Galactic and extra-galactic dusty sources.

arXiv comment55 pages. Accepted for publication in A&A. The BeeP catalogue will be published in the Planck Legacy Archive (https://pla.esac.esa.int/pla)

References in corpus (38)

• emcee: The MCMC Hammer
• HEALPix -- a Framework for High Resolution Discretization, and Fast Analysis of Data Distributed on the Sphere
• Multimodal nested sampling: an efficient and robust alternative to MCMC methods for astronomical data analysis
• Planck 2018 results. I. Overview and the cosmological legacy of Planck
• Planck 2013 results. XI. All-sky model of thermal dust emission
• IRIS: A new generation of IRAS maps
• Planck Early Results: All sky temperature and dust optical depth from Planck and IRAS: Constraints on the "dark gas" in our galaxy
• Planck 2015 results. XXVII. The Second Planck Catalogue of Sunyaev-Zeldovich Sources
• Joint Bayesian component separation and CMB power spectrum estimation
• Planck Early Results. VII. The Early Release Compact Source Catalog
• Planck 2015 results. VIII. High Frequency Instrument data processing: Calibration and maps
• The pre-launch Planck Sky Model: a model of sky emission at submillimetre to centimetre wavelengths
• The ATLASGAL survey: a catalog of dust condensations in the Galactic plane
• Planck 2013 results. XXVIII. The Planck Catalogue of Compact Sources
• The Herschel-ATLAS Data Release 1 Paper I: Maps, Catalogues and Number Counts
• Planck 2013 results. IX. HFI spectral response
• Source extraction and photometry for the far-infrared and sub-millimeter continuum in the presence of complex backgrounds
• Planck 2015 results. XXVI. The Second Planck Catalogue of Compact Sources
• A bright z=5.2 lensed submillimeter galaxy in the field of Abell 773: HLSJ091828.6+514223
• The Herschel Lensing Survey (HLS): overview
• Removing point sources from CMB maps
• Planck's Dusty GEMS: Gravitationally lensed high-redshift galaxies discovered with the Planck survey
• A multi-scale filament extraction method: getfilaments
• Planck 2015 results. XXVIII. The Planck Catalogue of Galactic Cold Clumps
• The Herschel-ATLAS Data Release 1 Paper II: Multi-wavelength counterparts to submillimetre sources
• HerMES: Clusters of Dusty Galaxies Uncovered by Herschel and Planck
• Planck 2015 results. XII. Full Focal Plane simulations
• Planck 2015 results. VII. HFI TOI and beam processing
• Planck intermediate results. XLVIII. Disentangling Galactic dust emission and cosmic infrared background anisotropies
• Fast Pixel Space Convolution for CMB Surveys with Asymmetric Beams and Complex Scan Strategies: FEBeCoP
• Detecting Sunyaev-Zel'dovich clusters with PLANCK: II. Foreground components and optimised filtering schemes
• Powellsnakes II: a fast Bayesian approach to discrete object detection in multi-frequency astronomical data sets
• Planck intermediate results. LIV. The Planck Multi-frequency Catalogue of Non-thermal Sources
• Comparing filters for the detection of point sources
• Planck intermediate results. XXXIX. The Planck list of high-redshift source candidates
• The SCUBA-2 Ambitious Sky Survey: a catalogue of beam-sized sources in the Galactic longitude range 120 to 140
• Exploring local fNL estimators based on the binned bispectrum
• The bandmerged Planck Early Release Compact Source Catalogue: Probing sub-structure in the molecular gas at high Galactic latitude

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• The Coma cluster at LOFAR frequencies II: the halo, relic, and a new accretion relic