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| Planck Catalogue of Sunyaev–Zel'dovich Sources | |
|---|---|
| Name | Planck Catalogue of Sunyaev–Zel'dovich Sources |
| Mission type | Space telescope data product |
| Operator | European Space Agency |
| Launch | 14 May 2009 |
| Instruments | High Frequency Instrument, Low Frequency Instrument |
| Country | European Union |
Planck Catalogue of Sunyaev–Zel'dovich Sources is a catalog derived from the Planck mission that lists galaxy clusters detected via the Sunyaev–Zel'dovich effect in the microwave sky. It synthesizes observations from the High Frequency Instrument and Low Frequency Instrument aboard Planck, and was produced by teams affiliated with the European Space Agency, Institut d'Astrophysique Spatiale, Max Planck Institute for Astrophysics, and cooperating institutions. The catalogue underpins cosmological and astrophysical studies connected to galaxy clusters identified across the cosmic microwave background and has been cross-referenced with surveys from Sloan Digital Sky Survey, ROSAT, XMM-Newton, and Chandra X-ray Observatory.
The Planck catalogue compiles detections of galaxy clusters through their imprint on the cosmic microwave background via the Sunyaev–Zel'dovich effect, leveraging the all-sky mapping capabilities of Planck and the data processing expertise of teams from European Space Research and Technology Centre, Laboratoire AIM, and Max Planck Society. The product was produced within the context of international collaborations including contributors from Harvard–Smithsonian Center for Astrophysics, CERN, University of Cambridge, California Institute of Technology, and INAF. It complements cluster catalogues from South Pole Telescope, Atacama Cosmology Telescope, ROSAT All-Sky Survey, and optical compilations from Dark Energy Survey and Pan-STARRS.
Data preparation combined calibrated timelines from the High Frequency Instrument and the Low Frequency Instrument using mapmaking algorithms developed at European Space Agency centers and research institutes such as Jet Propulsion Laboratory and Leiden University. The processing pipeline relied on component separation techniques related to methods tested against simulations from the Planck Sky Model and external datasets like IRAS and WISE to mitigate foregrounds emanating from the Milky Way and extragalactic sources like Active Galactic Nuclei and star-forming galaxies. Teams from Max Planck Institute for Astrophysics, Laboratoire de Physique Subatomique et de Cosmologie, and University of Oxford implemented filtering and calibration steps tied to absolute gain references established by observations of Jupiter, Mars, and the Cosmic Microwave Background dipole.
Cluster detection employed multi-frequency matched filters and internal linear combination methods developed by groups at University of British Columbia, Universidad de Chile, and INAF, with parallel pipelines named after participating institutions including methods from MPIA, LPSC, and the University of Manchester. Validation combined cross-matching with X-ray catalogues from ROSAT, follow-up imaging with XMM-Newton and Chandra X-ray Observatory, and optical spectroscopy from facilities like Very Large Telescope, Keck Observatory, and Subaru Telescope. Statistical validation used simulations produced by teams at CEA, IPMU, and Fermilab and compared selection functions against results from South Pole Telescope and Atacama Cosmology Telescope collaborations.
Each catalogue entry lists sky coordinates in the International Celestial Reference Frame and SZ observables such as the integrated Compton-y parameter and signal-to-noise estimates produced by pipelines developed at IAS, LBNL, and University of Pennsylvania. Ancillary parameters include estimated cluster size proxies, redshift information compiled from Sloan Digital Sky Survey, 2MASS, and redshift surveys at Cerro Tololo Inter-American Observatory, as well as mass proxies calibrated against X-ray temperature and luminosity relations established by analyses from Harvard–Smithsonian Center for Astrophysics and Max Planck Institute for Extraterrestrial Physics. The catalogue entries were cross-listed with identifiers from Abell catalogue and other optical or X-ray compilations curated at NASA/IPAC Extragalactic Database.
The catalogue enabled constraints on cosmological parameters such as the matter density and normalization of the power spectrum through joint analyses by teams at Institute for Advanced Study, University of California, Berkeley, Imperial College London, and University of Chicago. Studies leveraging the catalogue probed cluster physics including feedback from Active Galactic Nuclei, baryonic effects on scaling relations explored by Princeton University, and cross-correlation analyses with large-scale structure in surveys like BOSS and eBOSS. Follow-up observations with XMM-Newton, Chandra X-ray Observatory, and optical facilities at Gemini Observatory and Subaru Telescope refined mass calibration and produced catalogs of high-redshift clusters used in tests of Lambda-CDM and alternative cosmological models assessed by research groups at University of Toronto, Columbia University, and ETH Zurich.
Systematic uncertainties stem from beam characterization tied to observations of planets such as Jupiter and Saturn, foreground contamination from Milky Way dust emission characterized using IRAS and Planck maps, and selection biases compared against targeted X-ray surveys like ROSAT All-Sky Survey. Calibration uncertainties were assessed by laboratories at National Institute of Standards and Technology and astrophysics groups at Institut d'Astrophysique de Paris. The catalogue’s completeness and purity vary with signal-to-noise thresholds and sky location, especially near the Galactic plane and regions surveyed by optical campaigns like Pan-STARRS and Dark Energy Survey.
The Planck catalogue informed subsequent SZ compilations and fostered collaboration between teams at South Pole Telescope, Atacama Cosmology Telescope, eROSITA, and optical programs including Dark Energy Survey and LSST (Vera C. Rubin Observatory), and helped set priorities for follow-up with James Webb Space Telescope and next-generation X-ray missions. The methodologies and data products influenced analysis pipelines at European Space Agency science centers and institutes such as Max Planck Society, CEA Saclay, and INAF, and underpinned cross-survey synergy efforts exemplified by joint working groups of International Astronomical Union and multinational consortia seeking improved cluster cosmology.
Category:Astronomy catalogs