{"paper":{"title":"Optical follow-up study of 32 high-redshift galaxy cluster candidates from Planck with the William Herschel Telescope","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO"],"primary_cat":"astro-ph.GA","authors_text":"(2) European Southern Observatory, 3), (3) IRFU, 4), (4) Universit\\'e Paris Diderot, 5), (5) Astronomisches Institut, (6) Leiden Observatory, (7) Faculty of physics, 8) ((1) Argelander-Institut f\\\"ur Astronomie, (8) Max Planck Institute for Extraterrestrial Physics, AIM, Auf dem H\\\"ugel 71, Bonn, CEA, CNRS, F-91191 Gif-sur-Yvette, France, Garching, Germany, Germany), Giessenbachstrasse, Gif-sur-Yvette, Hannah Zohren (1), Henk Hoekstra (6), Jan Luca van den Busch (1, Jean-Baptiste Melin (3), Karl-Schwarzschild-Str. 2, Leiden, Leiden University, Ludwig-Maximilians-Universit\\\"at, Matthias Klein (7, Monique Arnaud (3, Munich, Remco F. J. van der Burg (2, Rheinische Friedrich-Wilhelm Universit\\\"at Bonn, Ruhr-Universit\\\"at Bochum, Sorbonne Paris Cit\\'e, The Netherlands, Tim Schrabback (1), Universit\\\"atsstr. Bochum, Universit\\'e Paris-Saclay","submitted_at":"2019-06-19T15:47:40Z","abstract_excerpt":"The Planck satellite has detected cluster candidates via the Sunyaev Zel'dovich (SZ) effect, but the optical follow-up required to confirm these candidates is still incomplete, especially at high redshifts and for SZ detections at low significance. In this work we present our analysis of optical observations obtained for 32 Planck cluster candidates using ACAM on the 4.2-m William Herschel Telescope. These cluster candidates were preselected using SDSS, WISE, and Pan-STARRS images to likely represent distant clusters at redshifts $z \\gtrsim 0.7$. We obtain photometric redshift and richness est"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1906.08174","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}