On the environment of low surface brightness galaxies at different scales
Abstract
We select a volume-limited sample of galaxies derived from the SDSS DR7 to study the environment of low surface brightness (LSB) galaxies at different scales, as well as several physical properties of the dark matter haloes where the LSB galaxies of the sample are embedded. To characterize the environment, we make use of a number of publicly available value-added galaxy catalogues. We find a slight preference for LSB galaxies to be found in filaments instead of clusters, with their mean distance to the nearest filament typically larger than for high surface brightness (HSB) galaxies. The fraction of isolated central LSB galaxies is higher than the same fraction for HSB ones, and the density of their local environment lower. The stellar-to-halo mass ratio using four different estimates is up to ∼20 per cent for HSB galaxies. LSB central galaxies present more recent assembly times when compared with their HSB counterparts. Regarding the λ spin parameter, using six different proxies for its estimation, we find that LSB galaxies present systematically larger values of λ than the HSB galaxy sample, and constructing a control sample with direct kinematic information drawn from ALFALFA, we confirm that the spin parameter of LSB galaxies is 1.6–2 times larger than the one estimated for their HSB counterparts.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Oct 10, 2019
- Source ID
- 10.1093/mnras/stz2847
Entities
People
- Bernardo Cervantes Sodi
- Luis Enrique Pérez-montaño
Organizations
- Alfred P. Sloan Foundation
- American Museum of Natural History
- Case Western Reserve University
- Chinese Academy of Sciences
- Consejo Nacional de Humanidades, Ciencias y Tecnologías
- DGAPA, UNAM
- Drexel University
- Higher Education Funding Council for England
- Institute for Advanced Study
- Johns Hopkins University
- Los Alamos National Laboratory
- Max Planck Society
- National Aeronautics and Space Administration
- National Autonomous University of Mexico
- National Science Foundation
- New Mexico State University
- Ohio State University
- Princeton University
- United States Department of Energy
- United States Naval Observatory
- University of Basel
- University of Cambridge
- University of Chicago
- University of Pittsburgh
- University of Portsmouth
- University of Washington