The GALEX Arecibo SDSS Survey - I. Gas fraction scaling relations of massive galaxies and first data release
Year: 2010
Type: article
Abstract: We introduce the GALEX Arecibo SDSS Survey (GASS), an on-going large programme that is gathering high quality H I-line spectra using the Arecibo radio telescope for an unbiased sample of ∼1000 galaxies with stellar masses greater than 10 10 M and redshifts 0.025 < z < 0.05, selected from the Sloan Digital Sky Survey (SDSS) spectroscopic and Galaxy Evolution Explorer (GALEX) imaging surveys.The galaxies are observed until detected or until a low gas mass fraction limit (1.5-5 per cent) is reached.This paper presents the first Data Release, consisting of ∼20 per cent of the final GASS sample.We use this data set to explore the main scaling relations of the H I gas fraction with galaxy structure and NUVr colour.A large fraction (∼60 per cent) of the galaxies in our sample are detected in H I. Even at stellar masses above 10 11 M , the detected fraction does not fall below ∼40 per cent.We find that the atomic gas fraction M H I /M decreases strongly with stellar mass, stellar surface mass density and NUVr colour, but is only weakly correlated with the galaxy bulge-to-disc ratio (as measured by the concentration index of the r-band light).We also find that the fraction of galaxies with significant (more than a few per cent) H I decreases sharply above a characteristic stellar surface mass density of 10 8.5 M kpc -2 .The fraction of gas-rich galaxies decreases much
Authors: Barbara Catinella, David Schiminovich, Guinevere Kauffmann, Silvia Fabello, Jing Wang, Cameron Hummels, Jenna Lemonias, Sean M. Moran, Ronin Wu, Riccardo Giovanelli, Martha P. Haynes, Timothy M. Heckman, Antara R. Basu-Zych, Michael R. Blanton, Jarle Brinchmann, Tamás Budavári, Thiago Gonçalves, Benjamin D. Johnson, Robert C. Kennicutt, Barry F. Madore, Christopher D. Martin, Michael R. Rich, Linda J. Tacconi, David A. Thilker, Vivienne Wild, Ted K. Wyder
Institutions: Max Planck Institute for Astrophysics, Columbia University, University of Science and Technology of China, Johns Hopkins University, New York University, Cornell University, Goddard Space Flight Center, Leiden University, Universidade do Porto, Centro de Astrofísica da Universidade do Porto, Leiden Observatory, University of Cambridge, University of Arizona, Carnegie Institution for Science, Carnegie Observatories, California Institute of Technology, University of California, Los Angeles, Max Planck Institute for Extraterrestrial Physics, Institut d'Astrophysique de Paris
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
Funders: National Science Foundation, U.S. Department of Energy, National Aeronautics and Space Administration, Alfred P. Sloan Foundation, Brinson Foundation, Princeton University, Ohio State University, University of Washington, Johns Hopkins University, University of Pittsburgh, Case Western Reserve University, Drexel University, Universität Basel, University of Portsmouth, New Mexico State University, Chinese Academy of Sciences, Centre National d’Etudes Spatiales, Max-Planck-Gesellschaft, Max-Planck-Institut für Astronomie, Science and Technology Facilities Council, U.S. Naval Observatory, Fermilab, Los Alamos National Laboratory
OpenAlex ID: W2146374955