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$\texttt{galsbi}$: A Python package for the GalSBI galaxy population model

$\texttt{galsbi}$: A Python package for the GalSBI galaxy population model

Authors :
Fischbacher, Silvan
Moser, Beatrice
Kacprzak, Tomasz
Herbel, Joerg
Tortorelli, Luca
Schmitt, Uwe
Refregier, Alexandre
Amara, Adam
Publication Year :
2024

Abstract

Large-scale structure surveys measure the shape and position of millions of galaxies in order to constrain the cosmological model with high precision. The resulting large data volume poses a challenge for the analysis of the data, from the estimation of photometric redshifts to the calibration of shape measurements. We present GalSBI, a model for the galaxy population, to address these challenges. This phenomenological model is constrained by observational data using simulation-based inference (SBI). The $\texttt{galsbi}$ Python package provides an easy interface to generate catalogs of galaxies based on the GalSBI model, including their photometric properties, and to simulate realistic images of these galaxies using the $\texttt{UFig}$ package.<br />Comment: 10 pages, 5 figures, submitted to JOSS

Details

Database :
arXiv
Publication Type :
Report
Accession number :
edsarx.2412.08722
Document Type :
Working Paper