2011A&A...529A...4B


Query : 2011A&A...529A...4B

2011A&A...529A...4B - Astronomy and Astrophysics, volume 529A, 4-4 (2011/5-1)

Modeling the evolution of infrared galaxies: a parametric backward evolution model.

BETHERMIN M., DOLE H., LAGACHE G., LE BORGNE D. and PENIN A.

Abstract (from CDS):

We attempt to model the infrared galaxy evolution in as simple a way as possible and reproduce statistical properties such as the number counts between 15µm and 1.1mm, the luminosity functions, and the redshift distributions. We then use the fitted model to interpret observations from Spitzer, AKARI, BLAST, LABOCA, AzTEC, SPT, and Herschel, and make predictions for Planck and future experiments such as CCAT or SPICA. This model uses an evolution in density and luminosity of the luminosity function parametrized by broken power-laws with two breaks at redshift ∼0.9 and 2, and contains the two populations of the Lagache model: normal and starburst galaxies. We also take into account the effect of the strong lensing of high-redshift sub-millimeter galaxies. This effect is significant in the sub-mm and mm range near 50mJy. It has 13 free parameters and eight additional calibration parameters. We fit the parameters to the IRAS, Spitzer, Herschel, and AzTEC measurements with a Monte Carlo Markov chain. The model adjusted to deep counts at key wavelengths reproduces the counts from mid-infrared to millimeter wavelengths, as well as the mid-infrared luminosity functions. We discuss the contribution to both the cosmic infrared background (CIB) and the infrared luminosity density of the different populations. We also estimate the effect of the lensing on the number counts, and discuss the discovery by the South Pole Telescope (SPT) of a very bright population lying at high redshift. We predict the contribution of the lensed sources to the Planck number counts, the confusion level for future missions using a P(D) formalism, and the Universe opacity to TeV photons caused by the CIB. Material of the model (software, tables and predictions) is available online.

Abstract Copyright:

Journal keyword(s): diffuse radiation - galaxies: statistics - galaxies: evolution - galaxies: star formation - infrared: galaxies - submillimeter: galaxies

Simbad objects: 8

goto Full paper

goto View the references in ADS

Number of rows : 8
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024
#notes
1 NAME Chandra Deep Field-South reg 03 32 28.0 -27 48 30           ~ 2085 1
2 NAME COSMOS Field reg 10 00 28.60 +02 12 21.0           ~ 2963 0
3 Mrk 421 BLL 11 04 27.3140835504 +38 12 31.798495872   13.50 12.90 8.31   ~ 2670 1
4 NAME Hubble Deep Field reg 12 36 49.5 +62 12 58           ~ 1921 1
5 ACO 2218 ClG 16 35 54.0 +66 13 00           ~ 808 1
6 7C 165211.80+395026.00 BLL 16 53 52.21668403 +39 45 36.6088754 14.09 14.15 13.29 8.26   ~ 2158 2
7 QSO B1959+650 BLL 19 59 59.8520303688 +65 08 54.652536492     12.8 11.21   ~ 625 2
8 ClG J2143-4423 ClG 21 43 -44.4           ~ 17 0

To bookmark this query, right click on this link: simbad:objects in 2011A&A...529A...4B and select 'bookmark this link' or equivalent in the popup menu