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Multiwavelength consensus of large-scale linear bias
Pan, Hengxing1,2,3,4; Obreschkow, Danail1,5; Howlett, Cullan1; Lagos, Claudia del P.1,5,6; Elahi, Pascal J.1,5; Baugh, Carlton7; Gonzalez-Perez, Violeta8
2020-03-01
Source PublicationMONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
ISSN0035-8711
Volume493Issue:1Pages:747-764
Abstract

We model the large-scale linear galaxy bias b(g)(x, z) as a function of redshift z and observed absolute magnitude threshold x for broad-band continuum emission from the far-infrared to ultraviolet, as well as for prominent emission lines, such as the H alpha, H beta, Ly a, and [O II] lines. The modelling relies on the semi-analytic galaxy formation model GALFORM, run on the state-of-the-art N-body simulation SURFS with the Planck 2015 cosmology. We find that both the differential bias at observed absolute magnitude x and the cumulative bias for magnitudes brighter than x can be fitted with a five-parameter model: b(g)(x, z) = a + b(1 + z)(e)(1 + exp [(x - c)d]). We also find that the bias for the continuum bands follows a very similar form regardless of wavelength due to the mixing of star-forming and quiescent galaxies in a magnitude-limited survey. Differences in bias only become apparent when an additional colour separation is included, which suggest extensions to this work could look at different colours at fixed magnitude limits. We test our fitting formula against observations, finding reasonable agreement with some measurements within 1 sigma statistical uncertainties, and highlighting areas of improvement. We provide the fitting parameters for various continuum bands, emission lines, and intrinsic galaxy properties, enabling a quick estimation of the linear bias in any typical survey of large-scale structure.

Keywordgalaxies: large-scale bias galaxies: surveys galaxies: formation
DOI10.1093/mnras/staa222
WOS KeywordPOWER-SPECTRUM ANALYSIS ; GALAXY REDSHIFT SURVEY ; STAR-FORMATION LAWS ; DARK-MATTER HALOES ; ALL-SKY SURVEY ; LUMINOSITY FUNCTION ; ASSEMBLY BIAS ; COSMIC EVOLUTION ; EMISSION-LINE ; MASS FUNCTION
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000518156100053
PublisherOXFORD UNIV PRESS
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/36111
Collection中国科学院紫金山天文台
Corresponding AuthorPan, Hengxing
Affiliation1.Univ Western Australia, Int Ctr Radio Astron Res, 35 Stirling Hwy, Crawley, WA 6009, Australia
2.Purple Mt Observ, 2 West Beijing Rd, Nanjing 210008, Peoples R China
3.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
4.Univ Oxford, Astrophys, Keble Rd, Oxford OX1 3RH, England
5.ARC Ctr Excellence All Sky Astrophys 3 Dimens AST, Canberra, ACT, Australia
6.Univ Copenhagen, Cosm Dawn Ctr DAWN, Niels Bohr Inst, Copenhagen, Denmark
7.Univ Durham, Inst Computat Cosmol, Dept Phys, Durham DH1 3LE, England
8.Liverpool John Moores Univ, Astrophys Res Inst, 146 Brownlow Hill, Liverpool L3 5RF, Merseyside, England
Recommended Citation
GB/T 7714
Pan, Hengxing,Obreschkow, Danail,Howlett, Cullan,et al. Multiwavelength consensus of large-scale linear bias[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2020,493(1):747-764.
APA Pan, Hengxing.,Obreschkow, Danail.,Howlett, Cullan.,Lagos, Claudia del P..,Elahi, Pascal J..,...&Gonzalez-Perez, Violeta.(2020).Multiwavelength consensus of large-scale linear bias.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,493(1),747-764.
MLA Pan, Hengxing,et al."Multiwavelength consensus of large-scale linear bias".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 493.1(2020):747-764.
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