2014MNRAS.442.1805I

Query : 2014MNRAS.442.1805I

2014MNRAS.442.1805I - Mon. Not. R. Astron. Soc., 442, 1805-1820 (2014/August-1)

An updated analytic model for attenuation by the intergalactic medium.

INOUE A.K., SHIMIZU I., IWATA I. and TANAKA M.

Abstract (from CDS):

We present an updated version of the so-called Madau model for attenuation of the radiation from distant objects by intergalactic neutral hydrogen. First, we derive the distribution function of intergalactic absorbers from the latest observational statistics of the Lyα forest, Lyman-limit systems and damped Lyα systems. The distribution function reproduces the observed redshift evolution of the Lyα depression and the mean-free path of the Lyman continuum excellently and simultaneously. We then derive a set of analytic functions describing the mean intergalactic attenuation curve for objects at z > 0.5. The new model predicts less (or more) Lyα attenuation for z ≃ 3-5 (z > 6) sources through the usual broad-band filters relative to the original Madau model. This may cause a systematic difference in the photometric redshift estimates, which is, however, still small: about 0.05. Finally, we find a more than 0.5 mag overestimation of Lyman-continuum attenuation in the original Madau model at z > 3, which causes a significant overcorrection against direct observations of the Lyman continuum of galaxies.

Abstract Copyright: © 2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2014)

Journal keyword(s): galaxies: high-redshift - intergalactic medium - cosmology: observations

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NAME GOODS Southern Field reg 03 32 28.0 -27 48 30           ~ 1623 1

Query : 2014MNRAS.442.1805I

Basic data :
NAME GOODS Southern Field -- Region defined in the Sky
Other object types: otypes_help 		reg ()
ICRS coord. (ep=J2000) : 		03 32 28.0 -27 48 30 [ ] D ~
FK4 coord. (ep=B1950 eq=1950) : 		03 30 22.4 -27 58 35 [ ]
Gal coord. (ep=J2000) : 		223.5732 -54.4374 [ ]
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Identifiers (4) :
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NAME GOODS South Field NAME GOODS Southern Field NAME GOODS-S Field NAME GOODS-South Field

References (1623 between 1850 and 2026) (Total 1623)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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