UNITSIM-Galaxies: Data release and clustering of emission-line galaxies
Entity
UAM. Departamento de Física TeóricaPublisher
Royal Astronomical Society; Oxford University PressDate
2022-01-12Citation
10.1093/mnras/stac006
Monthly Notices of the Royal Astronomical Society 510.4 (2022): 5392-5407
ISSN
0035-8711 (print); 1365-2966 (online)DOI
10.1093/mnras/stac006Project
Gobierno de España. PGC2018-094975-C21; info:eu-repo/grantAgreement/EC/H2020/713366/EU//InterTalentum; info:eu-repo/grantAgreement/EC/H2020/716151/EU//BACCO; Gobierno de España. AYA2017-89891-PEditor's Version
https://doi.org/10.1093/mnras/stac006Subjects
Methods: Numerical; Galaxies: Formation; Galaxies: High-Redshift; Galaxies: Abundances; Cosmology: Theory; Large-Scale Structure of the Universe; FísicaNote
This 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 510.4 (2022): 5392-5407 is available online at: https://academic.oup.com/mnras/article-abstract/510/4/5392/6505155?redirectedFrom=fulltextRights
© 2021 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical SocietyAbstract
New surv e ys such as European Space Agenc ys (ESA's) Euclid mission are planned to map with unprecedented precision the large-scale structure of the Universe by measuring the 3D positions of tens of millions of galaxies. It is necessary to develop theoretically modelled galaxy catalogues to estimate the expected performance and to optimize the analysis strategy of these surv e ys. We populate two pairs of (1 h -1 Gpc) 3 volume dark matter-only simulations from the UNIT project with galaxies using the Semi-Analytic Galaxy Evolution semi-analytic model of galaxy formation, coupled to the photoionization model GET EMLINES to estimate their H αemission. These catalogues represent a unique suite that includes galaxy formation physics and -thanks to the fixed-pair technique used -an ef fecti ve volume of ∼(5 h -1 Gpc ) 3 , which is several times larger than the Euclid surv e y. We present the performance of these data and create five additional emission-line galaxy (ELG) catalogues by applying a dust-attenuation model as well as adjusting the flux threshold as a function of redshift in order to reproduce Euclid-forecast d N /d z values. As a first application, we study the abundance and clustering of those model H αELGs: For scales greater than ∼5 h -1 Mpc, we find a scale- independent bias with a value of b ∼1 at redshift z ∼0.5, that can increase nearly linearly to b ∼4 at z ∼2, depending on the ELG catalogue. Model galaxy properties, including their emission-line fluxes (with and without dust extinction) are publicly available
Files in this item
Google Scholar:Knebe, Alexander
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Lopez-Cano, Daniel
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Avila, Santiago
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Favole, Ginevra
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Stevens, Adam R.H.
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Gonzalez-Perez, Violeta
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Reyes-Peraza, Guillermo
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Yepes Alonso, Gustavo
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Chuang, Chia Hsun
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Kitaura, Francisco Shu
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