THE RESOLVE SURVEY ATOMIC GAS CENSUS AND ENVIRONMENTAL INFLUENCES ON GALAXY GAS RESERVOIRS
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Astronomy survey paper on the atomic gas census of RESOLVE galaxies.
It analyzes galaxy gas reservoirs and environments, not research itself.
Astronomy census of galaxy HI gas and environment; observational astrophysics.
Abstract
We present the H i mass inventory for the REsolved Spectroscopy Of a Local VolumE (RESOLVE) survey, a volume-limited, multi-wavelength census of >1500 z = 0 galaxies spanning diverse environments and complete in baryonic mass down to dwarfs of ~109 ${M}_{\odot }$. This first 21 cm data release provides robust detections or strong upper limits (1.4M H i < 5%–10% of stellar mass M *) for ~94% of RESOLVE. We examine global atomic gas-to-stellar mass ratios (G/S) in relation to galaxy environment using several metrics: group dark matter halo mass M h, central/satellite designation, relative mass density of the cosmic web, and distance to the nearest massive group. We find that at fixed M *, satellites have decreasing G/S with increasing M h starting clearly at M h ~ 1012 ${M}_{\odot }$, suggesting the presence of starvation and/or stripping mechanisms associated with halo gas heating in intermediate-mass groups. The analogous relationship for centrals is uncertain because halo abundance matching builds in relationships between central G/S, stellar mass, and halo mass, which depend on the integrated group property used as a proxy for halo mass (stellar or baryonic mass). On larger scales G/S trends are less sensitive to the abundance matching method. At fixed M h ≤ 1012 ${M}_{\odot }$, the fraction of gas-poor centrals increases with large-scale structure density. In overdense regions, we identify a rare population of gas-poor centrals in low-mass (M h < 1011.4 ${M}_{\odot }$) halos primarily located within ~1.5× the virial radius of more massive (M h > 1012 ${M}_{\odot }$) halos, suggesting that gas stripping and/or starvation may be induced by interactions with larger halos or the surrounding cosmic web. We find that the detailed relationship between G/S and environment varies when we examine different subvolumes of RESOLVE independently, which we suggest may be a signature of assembly bias.
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The record
- Venue
- UNC Libraries
- Topic
- Methane Hydrates and Related Phenomena
- Field
- Environmental Science
- Canadian institutions
- —
- Funders
- Lawrence Berkeley National LaboratoryYork UniversityUniversities Space Research AssociationCarnegie Mellon UniversityOffice of ScienceJohns Hopkins UniversityOhio State UniversityNew Mexico State UniversityUniversity of PortsmouthYale UniversityVanderbilt UniversityCollege of Engineering, Michigan State UniversityHarvard UniversityNorth Carolina Space GrantAlfred P. Sloan FoundationUniversity of WashingtonNational Science FoundationBrookhaven National LaboratoryU.S. Department of EnergyCalifornia Institute of TechnologyNational Aeronautics and Space AdministrationMinistry of Education, Culture, Sports, Science and TechnologyPrinceton University
- Keywords
- CensusEnvironmental scienceGalaxyGeographyAstrophysicsPhysicsPopulationSociologyDemography
- Has abstract in OpenAlex
- yes