Resumen
Post-starburst galaxies, identified by their unusually strong Balmer absorption lines and weaker than average emission lines, have traditionally been selected based on their central stellar populations. Here we identify 360 galaxies with post-starburst regions from the MaNGA integral field survey and classify these galaxies into three types: 31 galaxies with central post-starburst regions (CPSB), 37 galaxies with off-centre ring-like post-starburst regions (RPSB), and 292 galaxies with irregular post-starburst regions (IPSB). Focusing on the CPSB and RPSB samples, and comparing their radial gradients in Dn4000, HδA, and W(H α) to control samples, we find that while the CPSBs have suppressed star formation throughout their bulge and disc, and there is clear evidence of rapid decline of star formation in the central regions, the RPSBs only show clear evidence of recently rapidly suppressed star formation in their outer regions and an ongoing central starburst. The radial profiles in mass-weighted age and stellar v/σ indicate that CPSBs and RPSBs are not simply different evolutionary stages of the same event, rather the CPSB galaxies are caused by a significant disruptive event, while the RPSB galaxies are caused by disruption of gas fuelling to the outer regions. Compared to the control samples, both CPSB and RPSB galaxies show a higher fraction of interactions/mergers, misaligned gas, or bars that might be the cause of the gas inflows and subsequent quenching.
| Idioma original | English |
|---|---|
| Páginas (desde-hasta) | 5709-5722 |
| Número de páginas | 14 |
| Publicación | Monthly Notices of the Royal Astronomical Society |
| Volumen | 489 |
| N.º | 4 |
| DOI | |
| Estado | Published - nov 11 2019 |
Nota bibliográfica
Publisher Copyright:© 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society.
Financiación
YC acknowledges support from the National Key R&D Program of China (No. 2017YFA0402700), the National Natural Science Foundation of China (NSFC grants 11573013, 11733002, 11922302). VW and KR acknowledge support of the European Research Council via the award of a starting grant (SEDMorph; P.I. V. Wild). CT acknowledges NSF CAREER Award AST-1554877. DB is partly supported by RSCF grant 19-12-00145. RR thanks CNPq, FAPERGS, and CAPES for partially funding this project. We thank MSc student John Proctor for carefully proof reading an early manuscript. Funding for the Sloan Digital Sky Survey IV has been provided by the Alfred P. Sloan Foundation, the U.S. Department of Energy Office of Science, and the Participating Institutions. SDSS-IV acknowledges support and resources from the Center for High-Performance Computing at the University of Utah. The SDSS web site is www.sdss.org. SDSS-IV is managed by the Astrophysical Research Consortium for the Participating Institutions of the SDSS Collaboration including the Brazilian Participation Group, the Carnegie Institution for Science, Carnegie Mellon University, the Chilean Participation Group, the French Participation Group, Harvard-Smithsonian Center for Astrophysics, Instituto de Astrof\u00EDsica de Canarias, The Johns Hopkins University, Kavli Institute for the Physics and Mathematics of the Universe (IPMU) / University of Tokyo, Lawrence Berkeley National Laboratory, Leibniz Institut f\u00FCr Astrophysik Potsdam (AIP), Max-Planck-Institut f\u00FCr Astronomie (MPIA Heidelberg), Max-Planck-Institut f\u00FCr Astrophysik (MPA Garching), Max-Planck-Institut f\u00FCr Extraterrestrische Physik (MPE), National Astronomical Observatories of China, New Mexico State University, New York University, University of Notre Dame, Observat\u00E1rio Nacional / MCTI, The Ohio State University, Pennsylvania State University, Shanghai Astronomical Observatory, United Kingdom Participation Group, Universidad Nacional Aut\u00F3noma de M\u00E9xico, University of Arizona, University of Colorado Boulder, University of Oxford, University of Portsmouth, University of Utah, University of Virginia, University of Washington, University of Wisconsin, Vanderbilt University, and Yale University. YC acknowledges support from the National Key R&D Program of China (No. 2017YFA0402700), the National Natural Science Foundation of China (NSFC grants 11573013, 11733002, 11922302). VW and KR acknowledge support of the European Research Council via the award of a starting grant (SEDMorph; P.I. V. Wild). CT acknowledges NSF CAREER Award AST-1554877. DB is partly supported by RSCF grant 19-12-00145. RR thanks CNPq, FAPERGS, and CAPES for partially funding this project. We thank MSc student John Proctor for carefully proof reading an early manuscript. Funding for the Sloan Digital Sky Survey IV has been provided by the Alfred P. Sloan Foundation, the U.S. Department of Energy Office of Science, and the Participating Institutions. SDSS-IV acknowledges support and resources from the Center for High-Performance Computing at the University of Utah. The SDSS web site is www.sdss.org.
| Financiadores | Número del financiador |
|---|---|
| The Pennsylvania State University | |
| MPIA Heidelberg | |
| Max-Planck-Institut für Astronomie | |
| Observatário Nacional | |
| Leibniz-Institut für Astrophysik Potsdam | |
| University of Wisconsin-Madison | |
| The Johns Hopkins University | |
| Instituto de Astrofísica de Canarias | |
| Ohio Water Resources Center, Ohio State University | |
| Universidad Nacional Autónoma de México, University of Arizona | |
| Maritime and Port Authority of Singapore | |
| IPMU | |
| Max-Planck-Institut für Astrophysik | |
| Conselho Nacional de Desenvolvimento Científico e Tecnológico | |
| Coordenação de Aperfeiçoamento de Pessoal de Nível Superior | |
| University of Utah Health | |
| Mellon College of Science, Carnegie Mellon University | |
| Lawrence Berkeley National Laboratory | |
| University of Colorado Boulder | |
| Notre Dame Integrated Imaging Facility, University of Notre Dame | |
| Alfred P Sloan Foundation | |
| Kavli Institute for the Physics and Mathematics of the Universe | |
| Max-Planck-Institut für extraterrestrische Physik (MPE) | |
| Virginia Agricultural Experiment Station, Virginia Polytechnic Institute and State University | |
| University of Portsmouth | |
| Ministério da Ciência, Tecnologia e Inovação | |
| Yale University | |
| National Science Foundation Office of International Science and Engineering | |
| Fundação de Amparo à Pesquisa do Estado do Rio Grande do Sul | |
| The George Washington University | |
| H2020 European Research Council | |
| New Mexico State University, New York University | |
| Oxford Martin School, University of Oxford | |
| University of Tokyo | |
| Vanderbilt Digestive Diseases Research Center, Vanderbilt University Medical Center | |
| National Astronomical Observatories, Chinese Academy of Sciences | |
| UK Industrial Decarbonization Research and Innovation Centre | 53706 |
| National Key Basic Research and Development Program of China | 2017YFA0402700 |
| U.S. Department of Energy Chinese Academy of Sciences Guangzhou Municipal Science and Technology Project Oak Ridge National Laboratory Extreme Science and Engineering Discovery Environment National Science Foundation National Energy Research Scientific Computing Center National Natural Science Foundation of China | AST-1554877 |
| Robert Sterling Clark Foundation | 19-12-00145 |
| National Natural Science Foundation of China (NSFC) | 11733002, 11922302, 11573013 |
ASJC Scopus subject areas
- Astronomy and Astrophysics
- Space and Planetary Science