W.I. Cowley
The clustering evolution of dusty star-forming galaxies
Cowley, W.I.; Lacey, C.G.; Baugh, C.M.; Cole, S.
Authors
Professor Cedric Lacey cedric.lacey@durham.ac.uk
Professor
Professor Carlton Baugh c.m.baugh@durham.ac.uk
Professor
Professor Shaun Cole shaun.cole@durham.ac.uk
Director of the Institute for Computational Cosmology
Abstract
We present predictions for the clustering of galaxies selected by their emission at far-infrared (FIR) and sub-millimetre wavelengths. This includes the first predictions for the effect of clustering biases induced by the coarse angular resolution of single-dish telescopes at these wavelengths. We combine a new version of the GALFORM model of galaxy formation with a self-consistent model for calculating the absorption and re-emission of radiation by interstellar dust. Model galaxies selected at 850μm reside in dark matter haloes of mass Mhalo ∼ 1011.5–1012 h−1 M⊙, independent of redshift (for 0.2 ≲ z ≲ 4) or flux (for 0.25 ≲ S850 μm ≲ 4 mJy). At z ∼ 2.5, the brightest galaxies (S850 μm > 4 mJy) exhibit a correlation length of r0=5.5+0.3−0.5r0=5.5−0.5+0.3 h−1 Mpc, consistent with observations. We show that these galaxies have descendants with stellar masses M⋆ ∼ 1011 h−1 M⊙ occupying haloes spanning a broad range in mass Mhalo ∼ 1012–1014 h−1 M⊙. The FIR emissivity at shorter wavelengths (250, 350 and 500 μm) is also dominated by galaxies in the halo mass range Mhalo ∼ 1011.5–1012 h−1 M⊙, again independent of redshift (for 0.5 ≲ z ≲ 5). We compare our predictions for the angular power spectrum of cosmic infrared background anisotropies at these wavelengths with observations, finding agreement to within a factor of ∼2 over all scales and wavelengths, an improvement over earlier versions of the model. Simulating images at 850 μm, we show that confusion effects boost the measured angular correlation function on all scales by a factor of ∼4. This has important consequences, potentially leading to inferred halo masses being overestimated by an order of magnitude.
Citation
Cowley, W., Lacey, C., Baugh, C., & Cole, S. (2016). The clustering evolution of dusty star-forming galaxies. Monthly Notices of the Royal Astronomical Society, 461(2), 1621-1641. https://doi.org/10.1093/mnras/stw1069
Journal Article Type | Article |
---|---|
Acceptance Date | May 3, 2016 |
Online Publication Date | May 6, 2016 |
Publication Date | Sep 11, 2016 |
Deposit Date | Sep 28, 2016 |
Publicly Available Date | Oct 6, 2016 |
Journal | Monthly Notices of the Royal Astronomical Society |
Print ISSN | 0035-8711 |
Electronic ISSN | 1365-2966 |
Publisher | Royal Astronomical Society |
Peer Reviewed | Peer Reviewed |
Volume | 461 |
Issue | 2 |
Pages | 1621-1641 |
DOI | https://doi.org/10.1093/mnras/stw1069 |
Files
Published Journal Article
(2.5 Mb)
PDF
Copyright Statement
This article has been published in Monthly Notices of the Royal Astronomical Society ©: 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.
You might also like
GTC Follow-up Observations of Very Metal-poor Star Candidates from DESI
(2023)
Journal Article
The DESI Bright Galaxy Survey: Final Target Selection, Design, and Validation
(2023)
Journal Article
PyAutoGalaxy: Open-Source Multiwavelength Galaxy Structure & Morphology
(2023)
Journal Article
Downloadable Citations
About Durham Research Online (DRO)
Administrator e-mail: dro.admin@durham.ac.uk
This application uses the following open-source libraries:
SheetJS Community Edition
Apache License Version 2.0 (http://www.apache.org/licenses/)
PDF.js
Apache License Version 2.0 (http://www.apache.org/licenses/)
Font Awesome
SIL OFL 1.1 (http://scripts.sil.org/OFL)
MIT License (http://opensource.org/licenses/mit-license.html)
CC BY 3.0 ( http://creativecommons.org/licenses/by/3.0/)
Powered by Worktribe © 2024
Advanced Search