The Planck SZiFi catalogues: a new set of Planck catalogues of Sunyaev-Zeldovich-detected galaxy clusters
\'I\~nigo Zubeldia, Jean-Baptiste Melin, Jens Chluba, Richard, Battye

TL;DR
The paper presents the creation and validation of the Planck SZiFi catalogues, a comprehensive set of galaxy cluster detections via the Sunyaev-Zeldovich effect, enabling improved cosmological studies.
Contribution
Introduces a new set of 10 Planck SZ catalogues with advanced cluster detection methods, including spectral deprojection and impact assessment of CIB and relativistic corrections.
Findings
Catalogues contain 1499 detections with high purity.
Cluster detection pipeline validated with synthetic data.
The catalogues are suitable for cosmological inference.
Abstract
We introduce the Planck SZiFi catalogues, a new set of 10 catalogues of galaxy clusters detected through their thermal Sunyaev-Zeldovich (tSZ) signature. The catalogues are produced by applying the SZiFi cluster finder to the Planck PR3 temperature data down to a signal-to-noise threshold of 5. They span three frequency channel combinations (100-857 GHz, 100-545 GHz, and 100-353 GHz) and 7 of them are constructed by spectrally deprojecting the Cosmic Infrared Background (CIB). This approach allows us, for the first time in the context of cluster finding, to carefully assess the impact of the cluster-correlated CIB on the recovered cluster tSZ observables, which we find to be negligible. In addition, we quantify the impact of the relativistic corrections to the tSZ signal, finding them to be at the 5-10% level for the cluster tSZ amplitude but negligible for the signal-to-noise. We…
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Taxonomy
TopicsAdvanced Mathematical Theories and Applications · Galaxies: Formation, Evolution, Phenomena · Astronomical Observations and Instrumentation
