A basic script to get started with the COSMOS2020 catalogue. It shows how to modify photometry, plot galaxy physical quantities, etc. Written by D. Blanquez, I. Davidzon, G. Magdis.
David Blanquez-Sese: dblse@space.dtu.dk
Iary Davidzon: iary.davidzon@nbi.ku.dk
With the present Notebook the user is able to extract valuable information from the COSMOS2020 catalogue, which can be downloaded from the official data repository. This is also a convenient starting point for further analysis. With minimal modifications the code can be useful to study others galaxy catalogues.
The Notebook is divided in the following sections:
- Introduction: loading the tables and selecting the columns
- Data preparation: basic manipulations/corrections of the original photometry
- Data visualization: sky map, redshift and color distributions, SED fitting
- Classic diagnostics: color-color diagrams, SFR vs. M* diagram, ...
- A simple machine-learning application: prducing "mock photometry" by means of Gaussian Mixtures
If you use the COSMOS2020 catalog in your study, please cite Weaver et al. (2021)