Author:
Zhou Rongpu,Ferraro Simone,White Martin,DeRose Joseph,Sailer Noah,Aguilar Jessica,Ahlen Steven,Bailey Stephen,Brooks David,Claybaugh Todd,Dawson Kyle,de la Macorra Axel,Dey Biprateep,Doel Peter,Font-Ribera Andreu,Forero-Romero Jaime E.,Gontcho A Gontcho Satya,Guy Julien,Kremin Anthony,Lambert Andrew,Le Guillou Laurent,Levi Michael,Magneville Christophe,Manera Marc,Meisner Aaron,Miquel Ramon,Moustakas John,Myers Adam D.,Newman Jeffrey A.,Nie Jundan,Percival Will,Rezaie Mehdi,Rossi Graziano,Sanchez Eusebio,Schlegel David,Schubnell Michael,Seo Hee-Jong,Tarlé Gregory,Zhou Zhimin
Abstract
Abstract
We present two galaxy samples, selected from DESI Legacy Imaging Surveys (LS) DR9, with approximately 20,000 square degrees of coverage and spectroscopic redshift distributions designed for cross-correlations such as with CMB lensing, galaxy lensing, and the Sunyaev-Zel'dovich effect. The first sample is identical to the DESI Luminous Red Galaxy (LRG) sample, and the second sample is an extended LRG sample with 2–3 times the DESI LRG density. We present the improved photometric redshifts, tomographic binning and their spectroscopic redshift distributions and imaging systematics weights, and magnification bias coefficients. The catalogs and related data products will be made publicly available. The cosmological constraints using this sample and Planck lensing maps are presented in a companion paper. We also make public the new set of general-purpose photometric redshifts trained using DESI spectroscopic redshifts, which are used in this work, for all galaxies in LS DR9.
Subject
Astronomy and Astrophysics
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