Galaxy and subhalo mass fractions relative to dark matter decrease towards the centres of matched cosmic voids, with galaxy-to-subhalo ratios limited by the scarcity of massive subhaloes.
A Cosmic Void Catalog of SDSS DR12 BOSS Galaxies
1 Pith paper cite this work. Polarity classification is still indexing.
abstract
We present a cosmic void catalog using the large-scale structure galaxy catalog from the Baryon Oscillation Spectroscopic Survey (BOSS). This galaxy catalog is part of the Sloan Digital Sky Survey (SDSS) Data Release 12 and is the final catalog of SDSS-III. We take into account the survey boundaries, masks, and angular and radial selection functions, and apply the ZOBOV void finding algorithm to the galaxy catalog. We identify a total of 10,643 voids. After making quality cuts to ensure that the voids represent real underdense regions, we obtain 1,228 voids with effective radii spanning the range 20-100Mpc/h and with central densities that are, on average, 30% of the mean sample density. We release versions of the catalogs both with and without quality cuts. We discuss the basic statistics of voids, such as their size and redshift distributions, and measure the radial density profile of the voids via a stacking technique. In addition, we construct mock void catalogs from 1000 mock galaxy catalogs, and find that the properties of BOSS voids are in good agreement with those in the mock catalogs. We compare the stellar mass distribution of galaxies living inside and outside of the voids, and find no significant difference. These BOSS and mock void catalogs are useful for a number of cosmological and galaxy environment studies.
fields
astro-ph.CO 1years
2026 1verdicts
CONDITIONAL 1representative citing papers
citing papers explorer
-
Multi-tracer mass bias in matched cosmic voids from SDSS DR7 and the ELUCID constrained simulation
Galaxy and subhalo mass fractions relative to dark matter decrease towards the centres of matched cosmic voids, with galaxy-to-subhalo ratios limited by the scarcity of massive subhaloes.