SDSS-IV MaNGA: A SERENDIPITOUS OBSERVATION of A POTENTIAL GAS ACCRETION EVENT

Edmond Cheung, David V. Stark, Song Huang, Kate H.R. Rubin, Lihwai Lin, Christy Tremonti, Kai Zhang, Renbin Yan, Dmitry Bizyaev, Médéric Boquien, Joel R. Brownstein, Niv Drory, Joseph D. Gelfand, Johan H. Knapen, Roberto Maiolino, Olena Malanushenko, Karen L. Masters, Michael R. Merrifield, Zach Pace, Kaike PanRogemar A. Riffel, Alexandre Roman-Lopes, Wiphu Rujopakarn, Donald P. Schneider, John P. Stott, Daniel Thomas, Anne Marie Weijmans

Producción científica: Articlerevisión exhaustiva

11 Citas (Scopus)

Resumen

The nature of warm, ionized gas outside of galaxies may illuminate several key galaxy evolutionary processes. A serendipitous observation by the MaNGA survey has revealed a large, asymmetric Hα complex with no optical counterpart that extends ≈8″ (≈6.3 kpc) beyond the effective radius of a dusty, starbursting galaxy. This Hα extension is approximately three times the effective radius of the host galaxy and displays a tail-like morphology. We analyze its gas-phase metallicities, gaseous kinematics, and emission-line ratios and discuss whether this Hα extension could be diffuse ionized gas, a gas accretion event, or something else. We find that this warm, ionized gas structure is most consistent with gas accretion through recycled wind material, which could be an important process that regulates the low-mass end of the galaxy stellar mass function.

Idioma originalEnglish
Número de artículo182
PublicaciónAstrophysical Journal
Volumen832
N.º2
DOI
EstadoPublished - dic 1 2016

Nota bibliográfica

Publisher Copyright:
© 2016. The American Astronomical Society. All rights reserved.

Financiación

The Ohio State University, Pennsylvania State University, Shanghai Astronomical Observatory, United Kingdom Participation Group, Universidad Nacional Autonoma de Mexico, 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. D.B. is supported by grant RSCF-14-22-00041. A.W. acknowledges support from a Leverhulme Early Career Fellowship. J.H.K. acknowledges financial support from the Spanish Ministry of Economy and Competitiveness (MINECO) under grant number AYA2013-41243-P and thanks the Astrophysics Research Institute of Liverpool John Moores University for their hospitality, and the Spanish Ministry of Education, Culture and Sports for financial support of his visit there, through grant number PR2015-00512.

FinanciadoresNúmero del financiador
The Pennsylvania State University
University of Wisconsin-Madison
Leverhulme Trust
Ohio Water Resources Center, Ohio State University
University of Utah Health
Virginia Agricultural Experiment Station, Virginia Polytechnic Institute and State University
University of Portsmouth
The George Washington University
Vanderbilt Digestive Diseases Research Center, Vanderbilt University Medical Center
Yale UniversityRSCF-14-22-00041
Yale University
Science and Technology Facilities CouncilST/K00090X/1, ST/K003119/1, ST/N000668/1, ST/M001172/1
Science and Technology Facilities Council
Ministerio de Economía y CompetitividadAYA2013-41243-P
Ministerio de Economía y Competitividad
Ministerio de Educación, Cultura y DeportePR2015-00512
Ministerio de Educación, Cultura y Deporte
Japan Society for the Promotion of Science Fund for the Promotion of Joint International Research15K17604
Japan Society for the Promotion of Science Fund for the Promotion of Joint International Research

    ASJC Scopus subject areas

    • Astronomy and Astrophysics
    • Space and Planetary Science

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