Binary interactions and UV photometry on photometric redshift

TL;DR

This study evaluates how UV photometry and binary interactions influence photometric redshift estimates, finding UV data improves accuracy for certain galaxies while binary interactions have negligible effects.

Contribution

The paper demonstrates that UV photometry enhances photometric redshift accuracy and shows that binary interactions do not significantly impact photo-z estimates.

Findings

UV photometry improves photo-z accuracy for specific galaxy types

Binary interactions have negligible effect on photo-z estimates

Photometric redshift methods are robust against binary interaction effects

Abstract

Using the Hyperz code (Bolzonella et al. 2000) we present photometric redshift estimates for a random sample of galaxies selected from the SDSS/DR7 and GALEX/DR4, for which spectroscopic redshifts are also available. We confirm that the inclusion of ultraviolet photometry improves the accuracy of photo-zs for those galaxies with g*-r* < 0.7 and z_spec < 0.2. We also address the problem of how binary interactions can affect photo-z estimates, and find that their effect is negligible.