A photometric redshift catalogue of galaxies from the DESI legacy imaging surveys DR10
Changhua Li
The dataset contains all galaxies classified morphologically as ‘REX’, ‘EXP’, ‘DEV’ or ‘SER’, totaling 1,533,107,988 sources. we estimate photometric redshifts for these galaxies using both EAZY and models created by CatBoost. The complete set of predictions is stored across 360 files. In this predicted galaxy redshift catalog, there are 144,155,773 sources with bitmask=0, indicating potential contamination from corrupted imaging pixels, neighboring bright stars, globular clusters, or nearby galaxies. Consequently, the photometric redshifts for these sources are considered unreliable. Additionally, there are 312,960,837 sources meeting the criteria of having at least one exposure in four optical bands g,r,z,i with g 21.5, we cross-match our catalog with the photometric redshift catalog released in \citet{Cosmos2020}, using $lp\_zBEST$ as the true redshift. We retain matches within a 1 arcsecond radius, resulting in 194,197 sources (referred to as DESI+COSMOS) with at least one exposure in four optical bands and true redshifts ranging from 0 to 6.
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Paper Information
Paper Title:
A photometric redshift catalogue of galaxies from the DESI legacy imaging surveys DR10
Publication:
AJ
Identifiers
DOI:
10.12149/101486
VO Identifier:
ivo://China-VO/paperdata/101486
Publication Date:
2024-09-15
Citation Guidelines
Changhua Li et al. 2024. A photometric redshift catalogue of galaxies from the DESI legacy imaging surveys DR10. Version 1.0. https://doi.org/10.12149/101486
@misc{10.12149/101486,
doi = {10.12149/101486},
url = {https://doi.org/10.12149/101486},
author = {Changhua Li},
title = {A photometric redshift catalogue of galaxies from the DESI legacy imaging surveys DR10},
version = {1.0},
publisher = {Nataional Astronomical Data Center of China},
year= {2024}
}
doi = {10.12149/101486},
url = {https://doi.org/10.12149/101486},
author = {Changhua Li},
title = {A photometric redshift catalogue of galaxies from the DESI legacy imaging surveys DR10},
version = {1.0},
publisher = {Nataional Astronomical Data Center of China},
year= {2024}
}
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2024-09-15