Constraining the CO intensity mapping power spectrum at intermediate redshifts

Abstract We compile available constraints on the carbon monoxide (CO) 1-0 luminosity functions and abundances at redshifts 0–3. This is used to develop a data driven halo model for the evolution of the CO galaxy abundances and clustering across intermediate redshifts. It is found that the recent con...

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Bibliographic Details
Published in:Monthly notices of the Royal Astronomical Society 2018-04, Vol.475 (2), p.1477-1484
Main Author: Padmanabhan, Hamsa
Format: Article
Language:English
Subjects:
Carbon monoxide
Clustering
Galactic evolution
Galaxies
Luminosity
Mapping
Polls & surveys
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Summary:Abstract We compile available constraints on the carbon monoxide (CO) 1-0 luminosity functions and abundances at redshifts 0–3. This is used to develop a data driven halo model for the evolution of the CO galaxy abundances and clustering across intermediate redshifts. It is found that the recent constraints from the CO Power Spectrum Survey (z ∼ 3; Keating et al. 2016), when combined with existing observations of local galaxies (z ∼ 0; Keres, Yun & Young 2003), lead to predictions that are consistent with the results of smaller surveys at intermediate redshifts (z ∼ 1–2). We provide convenient fitting forms for the evolution of the CO luminosity–halo mass relation, and estimates of the mean and uncertainties in the CO power spectrum in the context of future intensity mapping experiments.
ISSN:0035-8711
1365-2966
DOI:10.1093/mnras/stx3250