Dark Energy Survey Year 3 results: Galaxy-halo connection from galaxy-galaxy lensing
Entity
UAM. Departamento de Física TeóricaPublisher
Royal Astronomical SocietyDate
2022-03-03Citation
10.1093/mnras/stab3155
Monthly Notices of the Royal Astronomical Society 509.3 (2022): 3119-3147
ISSN
0035-8711 (print); 1365-2966 (online)DOI
10.1093/mnras/stab3155Project
Gobierno de España. ESP2017-89838-C3-1-R; 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//COSMICDAWNEditor's Version
https://doi.org/10.1093/mnras/stab3155Subjects
Gravitational Lensing: Weak; Cosmology: Dark Matter; Large-Scale Structure of Universe; FísicaNote
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 509.3 (2022): 3119-3147 is available online at: https://academic.oup.com/mnras/article-abstract/509/3/3119/6425763?redirectedFrom=fulltext
Rights
© 2021 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical SocietyAbstract
Galaxy-galaxy lensing is a powerful probe of the connection between galaxies and their host dark matter haloes, which is important both for galaxy evolution and cosmology. We extend the measurement and modelling of the galaxy-galaxy lensing signal in the recent Dark Energy Survey Year 3 cosmology analysis to the highly non-linear scales (100 kpc). This extension enables us to study the galaxy-halo connection via a Halo Occupation Distribution (HOD) framework for the two lens samples used in the cosmology analysis: a luminous red galaxy sample (redmagic) and a magnitude-limited galaxy sample (maglim). We find that redmagic (maglim) galaxies typically live in dark matter haloes of mass log10(Mh/M) ≈ 13.7 which is roughly constant over redshift (13.3-13.5 depending on redshift). We constrain these masses to 15 per cent, approximately 1.5 times improvement over the previous work. We also constrain the linear galaxy bias more than five times better than what is inferred by the cosmological scales only. We find the satellite fraction for redmagic (maglim) to be 0.1-0.2 (0.1-0.3) with no clear trend in redshift. Our constraints on these halo properties are broadly consistent with other available estimates from previous work, large-scale constraints, and simulations. The framework built in this paper will be used for future HOD studies with other galaxy samples and extensions for cosmological analyses
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Google Scholar:Zacharegkas, G.
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García-Bellido Capdevila, Juan
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DES Collaboration
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