Detecting Radio AGN Signatures in Red Geysers
Por:
Roy N., Bundy K., Cheung E., Rujopakarn W., Cappellari M., Belfiore F., Yan R., Heckman T., Bershady M., Greene J., Westfall K., Drory N., Rubin K., Law D., Zhang K., Gelfand J., Bizyaev D., Wake D., Masters K., Thomas D., Li C., Riffel R.A.
Publicada:
1 ene 2018
Resumen:
A new class of quiescent galaxies harboring possible AGN-driven winds has been discovered using spatially resolved optical spectroscopy from the ongoing SDSS-IV MaNGA survey. These galaxies, termed "red geysers," constitute 5%-10% of the local quiescent population and are characterized by narrow bisymmetric patterns in ionized gas emission features. Cheung et al. argued that these galaxies host large-scale AGN-driven winds that may play a role in suppressing star formation at late times. In this work, we test the hypothesis that AGN activity is ultimately responsible for the red geyser phenomenon. We compare the nuclear radio activity of the red geysers to a matched control sample with similar stellar mass, redshift, rest-frame NUV - r color, axis ratio, and presence of ionized gas. We have used the 1.4 GHz radio continuum data from the VLA FIRST survey to stack the radio flux from the red geyser and control samples. In addition to a three times higher FIRST detection rate, we find that red geysers have a 5s higher level of average radio flux than control galaxies. After restricting to rest-frame NUV - r color >5 and checking mid-IR WISE photometry, we rule out star formation contamination and conclude that red geysers are associated with more active AGNs. Red geysers and a possibly related class with disturbed Ha emission account for 40% of all radio-detected red galaxies with log (M */M o) < 11. Our results support a picture in which episodic AGN activity drives large-scale, relatively weak ionized winds that may provide a feedback mechanism for many early-type galaxies © 2018. The American Astronomical Society. All rights reserved.
Filiaciones:
Roy N.:
Department of Astronomy and Astrophysics, University of California, 1156 High Street, Santa Cruz, CA 95064, United States
Bundy K.:
Department of Astronomy and Astrophysics, University of California, 1156 High Street, Santa Cruz, CA 95064, United States
UCO/Lick Observatory, Department of Astronomy and Astrophysics, University of California, 1156 High Street, Santa Cruz, CA 95064, United States
Cheung E.:
Kavli Institute for the Physics and Mathematics of the Universe (WPI), University of Tokyo Institutes for Advanced Study, University of Tokyo, Chiba, Kashiwa, 277-8583, Japan
Rujopakarn W.:
Kavli Institute for the Physics and Mathematics of the Universe (WPI), University of Tokyo Institutes for Advanced Study, University of Tokyo, Chiba, Kashiwa, 277-8583, Japan
Department of Physics, Faculty of Science, Chulalongkorn University, 254 Phayathai Road, Pathumwan, Bangkok, 10330, Thailand
Cappellari M.:
Sub-department of Astrophysics, Department of Physics, University of Oxford, Denys Wilkinson Building, Keble Road, Oxford, OX1 3RH, United Kingdom
Belfiore F.:
Department of Astronomy and Astrophysics, University of California, 1156 High Street, Santa Cruz, CA 95064, United States
Yan R.:
Department of Physics and Astronomy, University of Kentucky, 505 Rose Street, Lexington, KY 40506-0055, United States
Heckman T.:
Center for Astrophysical Sciences, Department of Physics and Astronomy, Johns Hopkins University, Baltimore, MD 21218, United States
Bershady M.:
Department of Astronomy, University of Wisconsin-Madison, 475 North Charter Street, Madison, WI 53706, United States
Greene J.:
Department of Astrophysical Sciences, Princeton University, Princeton, NJ 08544, United States
Westfall K.:
Department of Astronomy and Astrophysics, University of California, 1156 High Street, Santa Cruz, CA 95064, United States
UCO/Lick Observatory, Department of Astronomy and Astrophysics, University of California, 1156 High Street, Santa Cruz, CA 95064, United States
Drory N.:
McDonald Observatory, Department of Astronomy, University of Texas at Austin, 1 University Station, Austin, TX 78712-0259, United States
Rubin K.:
Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138, United States
Law D.:
Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, United States
Zhang K.:
Department of Physics and Astronomy, University of Kentucky, 505 Rose Street, Lexington, KY 40506-0055, United States
Gelfand J.:
NYU Abu Dhabi, P.O. Box 129188, Abu Dhabi, United Arab Emirates
Center for Cosmology and Particle Physics, New York University, Meyer Hall of Physics, 4 Washington Place, New York, NY 10003, United States
Bizyaev D.:
Apache Point Observatory and New Mexico State University, P.O. Box 59, Sunspot, NM 88349-0059, United States
Sternberg Astronomical Institute, Moscow State University, Moscow, Russian Federation
Wake D.:
Department of Astronomy, University of Wisconsin-Madison, 475 North Charter Street, Madison, WI 53706, United States
Department of Physical Sciences, Open University, Milton Keynes, MK7 6AA, United Kingdom
Masters K.:
Institute for Cosmology and Gravitation, University of Portsmouth, Dennis Sciama Building, Burnaby Road, Portsmouth, PO1 3FX, United Kingdom
Thomas D.:
Institute for Cosmology and Gravitation, University of Portsmouth, Dennis Sciama Building, Burnaby Road, Portsmouth, PO1 3FX, United Kingdom
Li C.:
Tsinghua Center for Astrophysics and Physics Department, Tsinghua University, Beijing, 100084, China
Riffel R.A.:
Universidade Federal de Santa Maria, Departamento de Física, CCNE, Santa-Maria, 97105-900, Brazil
Laboratório Interinstitucional de E-Astronomia - LIneA, Rio de Janeiro, RJ, Brazil
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