EDP Sciences
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Erratum
This article is an erratum for: [this article]

Issue
A&A
Volume 614, June 2018
Article Number C1
Number of page(s) 5
Section Extragalactic astronomy
DOI https://doi.org/10.1051/0004-6361/201629684e
Published online 06 June 2018

For some unexplained reasons, all tables in the Franceschini & Rodighiero (2017) paper have been mixed up. Tables 13 reported there were identical to those published in Franceschini et al. (2008). We report here in Tables 1, 2, and 4 the corresponding correct values in terms of photon proper number densities and photon–photon optical depths as a function of photon energy.

We also took this occasion to add a new table (Table 3) including the predicted extragalactic background light values at redshifts between 2 and 3.5, as requested by some readers of the Franceschini & Rodighiero (2017) paper.

Both photon number densities and photon–photon optical depths are calculated including the contributions of the cosmic microwave background assumed as a black-body with T = 2.728 K. Except for the numerical values in the tables, all the rest of the Franceschini & Rodighiero (2017) paper is unaffected by the problem.

Table 1

Photon proper number density as a function of redshift (1).

Table 2

Photon proper number density as a function of redshift (2).

Table 3

Photon proper number density as a function of redshift (3).

Table 4

Photon–photon optical depth as a function of energy and redshift.

Acknowledgements

We thank Jonathan Biteau, Barbara Biasuzzi, and Christoph Wendel for useful comments and criticisms.

References


© ESO 2018

All Tables

Table 1

Photon proper number density as a function of redshift (1).

Table 2

Photon proper number density as a function of redshift (2).

Table 3

Photon proper number density as a function of redshift (3).

Table 4

Photon–photon optical depth as a function of energy and redshift.

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