The influence of wavelength, flux, and lensing selection effects on the redshift distribution of dusty, star-forming galaxies - Archive ouverte HAL Access content directly
Journal Articles Astronomy and Astrophysics - A&A Year : 2015

The influence of wavelength, flux, and lensing selection effects on the redshift distribution of dusty, star-forming galaxies

(1) , (1) , (2) , (3)
1
2
3

Abstract

We interpret the wide variety of redshift distributions for galaxies found by far-infrared and (sub) millimeter deep surveys depending on their depth and wavelength using our phenomenological model of galaxy evolution. This model reproduces the observed redshift distributions from 100 μm to 1.4 mm and, especially, the increase in the median redshift with survey wavelength without any new parameter tuning. This median redshift also varies significantly with the depth of the surveys, and deeper surveys do not necessarily probe higher redshifts. Paradoxically, at a fixed wavelength and flux limit, the lensed sources are not always at higher redshift. We found that the higher redshift of 1.4 mm-selected South Pole Telescope (SPT) sources compared to other SMG surveys is caused not only by the lensing selection, but also by the longer wavelength. This SPT sample is expected to be dominated by a population of lensed main-sequence galaxies and a minor contribution (~10%) of unlensed extreme starbursts.
Fichier principal
Vignette du fichier
aa25718-15.pdf (545.24 Ko) Télécharger le fichier
Origin : Publication funded by an institution
Loading...

Dates and versions

cea-01300543 , version 1 (11-04-2016)

Identifiers

Cite

Matthieu Béthermin, Carlos de Breuck, Mark Sargent, Emanuele Daddi. The influence of wavelength, flux, and lensing selection effects on the redshift distribution of dusty, star-forming galaxies. Astronomy and Astrophysics - A&A, 2015, 576, pp.L9. ⟨10.1051/0004-6361/201525718⟩. ⟨cea-01300543⟩
104 View
97 Download

Altmetric

Share

Gmail Facebook Twitter LinkedIn More