TY - JOUR
T1 - Cold gas stripping in satellite galaxies
T2 - From pairs to clusters
AU - Brown, Toby
AU - Catinella, Barbara
AU - Cortese, Luca
AU - Lagos, Claudia del P.
AU - Davé, Romeel
AU - Kilborn, Virginia
AU - Haynes, Martha P.
AU - Giovanelli, Riccardo
AU - Rafieferantsoa, Mika
N1 - Funding Information:
Funding for SDSS-III has been provided by the Alfred P. Sloan Foundation, the Participating Institutions, the National Science Foundation and the US Department of Energy Office of Science. The SDSS-III web site is http://www.sdss3.org/.
Funding Information:
We wish to thank the referee for his/her helpful comments and constructive suggestions. We are grateful to K. Gereb, S. Janowiecki and A.R.H. Stevens for insightful discussions when writing this paper. We also acknowledge the work of the entire ALFALFA team in observing, flagging and processing the ALFALFA data that this work makes use of. The ALFALFA team at Cornell is supported by NSF grants AST-0607007 and AST-1107390, and by the Brinson Foundation.
Funding Information:
We wish to thank the referee for his/her helpful comments and constructive suggestions. We are grateful to K. Gereb, S. Janowiecki and A.R.H. Stevens for insightful discussions when writing this paper. We also acknowledge the work of the entire ALFALFA team in observing, flagging and processing the ALFALFA data that this work makes use of. The ALFALFA team at Cornell is supported by NSF grants AST-0607007 and AST-1107390, and by the Brinson Foundation. BC is the recipient of an Australian Research Council Future Fellowship (FT120100660). BC and LC acknowledge support from the Australian Research Council's Discovery Projects funding scheme (DP150101734). Funding for SDSS-III has been provided by the Alfred P. Sloan Foundation, the Participating Institutions, the National Science Foundation and the US Department of Energy Office of Science. The SDSS-III web site is http://www.sdss3.org/. SDSS-III is managed by the Astrophysical Research Consortium for the Participating Institutions of the SDSS-III Collaboration including the University of Arizona, the Brazilian Participation Group, Brookhaven National Laboratory, Carnegie Mellon University, University of Florida, the French Participation Group, the German Participation Group, Harvard University, the Instituto de Astrofisica de Canarias, the Michigan State/Notre Dame/JINA Participation Group, Johns Hopkins University, Lawrence Berkeley National Laboratory, Max Planck Institute for Astrophysics, Max Planck Institute for Extraterrestrial Physics, New Mexico State University, New York University, Ohio State University, Pennsylvania State University, University of Portsmouth, Princeton University, the Spanish Participation Group, University of Tokyo, University of Utah, Vanderbilt University, University of Virginia, University of Washington and Yale University.
Funding Information:
BC is the recipient of an Australian Research Council Future Fellowship (FT120100660). BC and LC acknowledge support from the Australian Research Council’s Discovery Projects funding scheme (DP150101734).
Publisher Copyright:
© 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society
PY - 2017/4/1
Y1 - 2017/4/1
N2 - In this paper, we investigate environment-driven gas depletion in satellite galaxies, taking full advantage of the atomic hydrogen (H I) spectral stacking technique to quantify the gas content for the entire gas-poor to -rich regimes. We do so using a multiwavelength sample of 10 600 satellite galaxies, selected according to stellar mass (log M★/M☉ ≥ 9) and redshift (0.02 ≤ z ≤ 0.05) from the Sloan Digital Sky Survey, with H I data from the Arecibo Legacy Fast ALFA survey. Using key H I-to-stellar mass scaling relations, we present evidence that the gas content of satellite galaxies is, to a significant extent, dependent on the environment in which a galaxy resides. For the first time, we demonstrate that systematic environmental suppression of gas content at both fixed stellar mass and fixed specific star formation rate in satellite galaxies begins in halo masses typical of the group regime (log Mh/M☉ < 13.5), well before galaxies reach the cluster environment. We also show that environment-driven gas depletion is more closely associated with halo mass than local density. Our results are then compared with state-of-the-art semi-analytic models and hydrodynamical simulations and discussed within this framework, showing that more work is needed if models are to reproduce the observations. We conclude that the observed decrease of gas content in the group and cluster environments cannot be reproduced by starvation of the gas supply alone and invoke fast acting processes such as ram-pressure stripping of cold gas to explain this.
AB - In this paper, we investigate environment-driven gas depletion in satellite galaxies, taking full advantage of the atomic hydrogen (H I) spectral stacking technique to quantify the gas content for the entire gas-poor to -rich regimes. We do so using a multiwavelength sample of 10 600 satellite galaxies, selected according to stellar mass (log M★/M☉ ≥ 9) and redshift (0.02 ≤ z ≤ 0.05) from the Sloan Digital Sky Survey, with H I data from the Arecibo Legacy Fast ALFA survey. Using key H I-to-stellar mass scaling relations, we present evidence that the gas content of satellite galaxies is, to a significant extent, dependent on the environment in which a galaxy resides. For the first time, we demonstrate that systematic environmental suppression of gas content at both fixed stellar mass and fixed specific star formation rate in satellite galaxies begins in halo masses typical of the group regime (log Mh/M☉ < 13.5), well before galaxies reach the cluster environment. We also show that environment-driven gas depletion is more closely associated with halo mass than local density. Our results are then compared with state-of-the-art semi-analytic models and hydrodynamical simulations and discussed within this framework, showing that more work is needed if models are to reproduce the observations. We conclude that the observed decrease of gas content in the group and cluster environments cannot be reproduced by starvation of the gas supply alone and invoke fast acting processes such as ram-pressure stripping of cold gas to explain this.
KW - Galaxies: ISM
KW - Galaxies: evolution
KW - Galaxies: fundamental parameters
KW - Galaxies: photometry
KW - Radio lines: galaxies
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U2 - 10.1093/mnras/stw2991
DO - 10.1093/mnras/stw2991
M3 - Article
AN - SCOPUS:85015891449
VL - 466
SP - 1275
EP - 1289
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
SN - 0035-8711
IS - 2
ER -