The Properties of Galaxies in Voids

Abstract

We present a comparison of the properties of galaxies in the most underdense regions of the Universe, where the galaxy number density is less than 10% of the mean density, with galaxies from more typical regions. We have compiled a sample of galaxies in 46 large nearby voids that were identified using the Sloan Digital Sky Survey DR4, which provides the largest coverage of the sky. We study the u-r color distribution, morphology, specific star formation rate, and radial number density profiles for a total of 495 galaxies fainter than M_r=-20.4 +5logh located inside the voids and compare these properties with a control sample of field galaxies. We show that there is an excess of blue galaxies inside the voids. However, inspecting the properties of blue and red galaxies separately, we find that galaxy properties such as color distribution, bulge-to-total ratios, and concentrations are remarkably similar between the void and overall sample. The void galaxies also show the same specific star formation rate at fixed color as the control galaxies. We compare our results with the predictions of cosmological simulations of galaxy formation using the Millennium Run semi-analytic galaxy catalog. We show that the properties of the simulated galaxies in large voids are in reasonably good agreement with those found in similar environments in the real Universe. To summarize, in spite of the fact that galaxies in voids live in the least dense large-scale environment, this environment makes very little impact on properties of galaxies.

11 pages, 15 figures, Submitted to MNRAS

Cited by in corpus (55)

• The Aspen--Amsterdam Void Finder Comparison Project
• The emptiness of voids: yet another over-abundance problem for the LCDM model
• Void Statistics in Large Galaxy Redshift Surveys: Does Halo Occupation of Field Galaxies Depend on Environment?
• The Void Phenomenon Explained
• The GIGANTES dataset: precision cosmology from voids in the machine learning era
• The star formation activity in cosmic voids
• Euclid: Forecasts from redshift-space distortions and the Alcock-Paczynski test with cosmic voids
• Properties of simulated galaxies and supermassive black holes in cosmic voids
• Where do "red and dead" early-type void galaxies come from?
• The HI Mass Function and Velocity Width Function of Void Galaxies in the Arecibo Legacy Fast ALFA Survey
• The Void Galaxy Survey: Photometry, structure and identity of void galaxies
• Galaxy properties from Voids to Clusters in the SDSS-DR4
• Galaxies in voids assemble their stars slowly
• The Environment of Galaxies at Low Redshift
• The metallicity of void dwarf galaxies
• Probing Galaxy Assembly Bias in BOSS Galaxies Using Void Probabilities
• Void Galaxies Follow a Distinct Evolutionary Path in the Environmental COntext Catalog
• Void galaxies in the nearby Universe. I. Sample description
• Ages and Metallicities of Early-Type Void Galaxies from Line Strength Measurements
• Stellar mass-metallicity relation throughout the large-scale structure of the Universe: CAVITY mother sample
• CO-CAVITY pilot survey: Molecular gas and star formation in void galaxies
• On the importance of high redshift intergalactic voids
• Morphological Segregation in the Surroundings of Cosmic Voids
• Local and large-scale effects on the astrophysics of void-galaxies
• The Galaxy Population In Voids: Are All Voids The Same?
• The CAVITY project. The spatially resolved stellar population properties of galaxies in voids
• Hierarchical structure of the cosmic web and galaxy properties
• Star Formation and Supercluster Environment of 107 Nearby Galaxy Clusters
• How do galaxies populate halos in extreme density environments? An analysis of the Halo Occupation Distribution in SDSS
• Voids in the SDSS Galaxy Survey
• Void Galaxy Distribution: A Challenge for $\Lambda$CDM
• HI Galaxy Signatures in the SARAO MeerKAT Galactic Plane Survey -- II. The Local Void and its substructure
• Study of galaxies in the Lynx-Cancer void. VI. HI-observations with the Nancay Radio Telescope
• On the Merger Rate of Primordial Black Holes in Cosmic Voids
• Hickson-like compact groups inhabiting different environments
• Imprints of the cosmic void evolution on the baryon processes inside galaxy haloes
• Got plenty of nothing: cosmic voids as a probe of particle dark matter
• Study of the Lynx-Cancer void galaxies-V. The extremely isolated galaxy UGC4722
• Morphologies of galaxies within voids
• Probing galaxy evolution through HI 21-cm emission and absorption: current status and prospects with the Square Kilometre Array
• Structure in the 3D Galaxy Distribution: II. Voids and Watersheds of Local Maxima and Minima
• Star Formation Properties of Sloan Digital Sky Survey BOSS Void Galaxies in the Hyper Suprime-Cam Survey
• Unveiling the Universe with Emerging Cosmological Probes
• Gas accretion and Ram Pressure Stripping of Haloes in Void Walls
• A Comparison of Void-Finding Algorithms using Crossing Numbers
• DESIVAST: A Catalog of Low-Redshift Voids using Data from the DESI DR1 Bright Galaxy Survey
• Deficit of Luminous and Normal Red Galaxies in Cosmic Voids
• The galaxy bias profile of cosmic voids
• Traces of the evolution of cosmic void galaxies: An Integral Field Spectroscopy based analysis
• The evolution of the halo occupation distribution in cosmic voids
• The CAVITY project. The spatially resolved SFR of galaxies in voids
• Voids in the Local Volume: a limit on appearance of a galaxy in a DM halo
• The Neighborhood Function and Its Application to Identifying Large-Scale Structure in the Comoving Universe Frame
• Explosions in the Empty: A Survey of Transients in Local Void Galaxies
• Ringing the universe with cosmic emptiness: void properties through a combined analysis of stacked weak gravitational and Doppler lensing