DESIVAST: A Catalog of Low-Redshift Voids using Data from the DESI DR1 Bright Galaxy Survey

TL;DR

This paper presents three new catalogs of low-redshift cosmic voids derived from the DESI Year 1 Bright Galaxy Survey, using two algorithms, to facilitate studies of galaxy environments and cosmology.

Contribution

It introduces three void catalogs from DESI data using different algorithms and compares their properties with SDSS, expanding resources for cosmic environment and cosmological research.

Findings

Catalogs contain 1,461, 420, and 295 voids respectively.

Void properties are generally consistent with SDSS but differ in volume overlap.

The catalogs are useful for galaxy environment and cosmological studies.

Abstract

We present three separate void catalogs created using a volume-limited sample of the DESI Year 1 Bright Galaxy Survey. We use the algorithms VoidFinder and V2 to construct void catalogs out to a redshift of z=0.24. We obtain 1,461 interior voids with VoidFinder, 420 with V2 using REVOLVER pruning, and 295 with V2 using VIDE pruning. Comparing our catalog with an overlapping SDSS void catalog, we find generally consistent void properties but significant differences in the void volume overlap, which we attribute to differences in the galaxy selection and survey masks. These catalogs are suitable for studying the variation in galaxy properties with cosmic environment and for cosmological studies.