Author: K. Viironen

0000000000322478

AUTHOR

K. Viironen

showing 2 related works from this author

High redshift galaxies in the ALHAMBRA survey

2015

International audience

[PHYS]Physics [physics][PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph]ComputingMilieux_MISCELLANEOUS

researchProduct

The ALHAMBRA survey: Accurate merger fractions by PDF analysis of photometric close pairs

2014

Our goal is to develop and test a novel methodology to compute accurate close pair fractions with photometric redshifts. We improve the current methodologies to estimate the merger fraction f_m from photometric redshifts by (i) using the full probability distribution functions (PDFs) of the sources in redshift space, (ii) including the variation in the luminosity of the sources with z in both the selection of the samples and in the luminosity ratio constrain, and (iii) splitting individual PDFs into red and blue spectral templates to deal robustly with colour selections. We test the performance of our new methodology with the PDFs provided by the ALHAMBRA photometric survey. The merger frac…

Astrophysics of Galaxies (astro-ph.GA)Astrophysics::Solar and Stellar AstrophysicsFOS: Physical sciencesAstrophysics::Cosmology and Extragalactic AstrophysicsAstrophysics - Astrophysics of GalaxiesAstrophysics::Galaxy Astrophysics

researchProduct

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