Galaxy–galaxy lensing with the DES-CMASS catalogue: measurement and constraints on the galaxy-matter cross-correlation
Entidad
UAM. Departamento de Física TeóricaEditor
Royal Astronomical Society; Oxford University PressFecha de edición
2021-10-28Cita
10.1093/mnras/stab3028
Monthly Notices of the Royal Astronomical Society 509.2 (2022): 2033-2047
ISSN
0035-8711 (print); 1365-2966 (online)DOI
10.1093/mnras/stab3028Proyecto
Gobierno de España. ESP2017-89838-C3-1-R; Gobierno de España. PGC2018-094773-B-C33; Gobierno de España. PGC2018-102021-B-I00; Gobierno de España. SEV-2016-0588; Gobierno de España. SEV-2016-0597; info:eu-repo/grantAgreement/EC/FP7/240672/EU//COGS; info:eu-repo/grantAgreement/EC/FP7/291329/EU//TESTDE; info:eu-repo/grantAgreement/EC/FP7/306478/EU//COSMICDAWNVersión del editor
https://doi.org/10.1093/mnras/stab3028Materias
Gravitational Lensing; Large-Scale Structure of the Universe; FísicaNota
Artículo escrito por un elevado número de autores, solo se referencian el que aparece en primer lugar, los autores pertenecientes a la UAM y el nombre del grupo de colaboración, si lo hubiereThis is a pre-copyedited, author-produced PDF of an article accepted for publication in Monthly Notices of the Royal Astronomical Society following peer review. The version of record Monthly Notices of the Royal Astronomical Society 509.2 (2022): 2033-2047 insert is available online at: https://academic.oup.com/mnras/article-abstract/509/2/2033/6413575?redirectedFrom=fulltext
Derechos
© 2021 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical SocietyResumen
The DMASS sample is a photometric sample from the DES Year 1 data set designed to replicate the properties of the CMASS sample from BOSS, in support of a joint analysis of DES and BOSS beyond the small overlapping area. In this paper, we present the measurement of galaxy–galaxy lensing using the DMASS sample as gravitational lenses in the DES Y1 imaging data. We test a number of potential systematics that can bias the galaxy–galaxy lensing signal, including those from shear estimation, photometric redshifts, and observing conditions. After careful systematic tests, we obtain a highly significant detection of the galaxy–galaxy lensing signal, with total S/N = 25.7. With the measured signal, we assess the feasibility of using DMASS as gravitational lenses equivalent to CMASS, by estimating the galaxy-matter cross-correlation coefficient rcc. By jointly fitting the galaxy–galaxy lensing measurement with the galaxy clustering measurement from CMASS, we obtain rcc = 1.09+−001211 for the scale cut of 4 h−1 Mpc and rcc = 1.06+−001312 for 12 h−1 Mpc in fixed cosmology. By adding the angular galaxy clustering of DMASS, we obtain rcc = 1.06 ± 0.10 for the scale cut of 4 h−1 Mpc and rcc = 1.03 ± 0.11 for 12 h−1 Mpc. The resulting values of rcc indicate that the lensing signal of DMASS is statistically consistent with the one that would have been measured if CMASS had populated the DES region within the given statistical uncertainty. The measurement of galaxy–galaxy lensing presented in this paper will serve as part of the data vector for the forthcoming cosmology analysis in preparation
Lista de ficheros
Google Scholar:Lee, S.
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García-Bellido Capdevila, Juan
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DES Collaboration
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