SDSS-IV MaNGA: A SERENDIPITOUS OBSERVATION OF A POTENTIAL GAS ACCRETION EVENT
ABSTRACT 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 H complex with no optical counterpart that extends 8″ ( 6.3 kpc) beyond the effective radius of a du...
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| Veröffentlicht in: | The Astrophysical journal 2016-12, Vol.832 (2), p.182 |
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| creator | Cheung, Edmond Stark, David V. Huang, Song Rubin, Kate H. R. Lin, Lihwai Tremonti, Christy Zhang, Kai Yan, Renbin Bizyaev, Dmitry Boquien, Médéric Brownstein, Joel R. Drory, Niv Gelfand, Joseph D. Knapen, Johan H. Maiolino, Roberto Malanushenko, Olena Masters, Karen L. Merrifield, Michael R. Pace, Zach Pan, Kaike Riffel, Rogemar A. Roman-Lopes, Alexandre Rujopakarn, Wiphu Schneider, Donald P. Stott, John P. Thomas, Daniel Weijmans, Anne-Marie |
| description | ABSTRACT 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 H complex with no optical counterpart that extends 8″ ( 6.3 kpc) beyond the effective radius of a dusty, starbursting galaxy. This H 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 H 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. |
| doi_str_mv | 10.3847/0004-637X/832/2/182 |
| format | Article |
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R. ; Lin, Lihwai ; Tremonti, Christy ; Zhang, Kai ; Yan, Renbin ; Bizyaev, Dmitry ; Boquien, Médéric ; Brownstein, Joel R. ; Drory, Niv ; Gelfand, Joseph D. ; Knapen, Johan H. ; Maiolino, Roberto ; Malanushenko, Olena ; Masters, Karen L. ; Merrifield, Michael R. ; Pace, Zach ; Pan, Kaike ; Riffel, Rogemar A. ; Roman-Lopes, Alexandre ; Rujopakarn, Wiphu ; Schneider, Donald P. ; Stott, John P. ; Thomas, Daniel ; Weijmans, Anne-Marie</creator><creatorcontrib>Cheung, Edmond ; Stark, David V. ; Huang, Song ; Rubin, Kate H. R. ; Lin, Lihwai ; Tremonti, Christy ; Zhang, Kai ; Yan, Renbin ; Bizyaev, Dmitry ; Boquien, Médéric ; Brownstein, Joel R. ; Drory, Niv ; Gelfand, Joseph D. ; Knapen, Johan H. ; Maiolino, Roberto ; Malanushenko, Olena ; Masters, Karen L. ; Merrifield, Michael R. ; Pace, Zach ; Pan, Kaike ; Riffel, Rogemar A. ; Roman-Lopes, Alexandre ; Rujopakarn, Wiphu ; Schneider, Donald P. ; Stott, John P. ; Thomas, Daniel ; Weijmans, Anne-Marie</creatorcontrib><description>ABSTRACT 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 H complex with no optical counterpart that extends 8″ ( 6.3 kpc) beyond the effective radius of a dusty, starbursting galaxy. This H 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 H 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.</description><identifier>ISSN: 0004-637X</identifier><identifier>EISSN: 1538-4357</identifier><identifier>DOI: 10.3847/0004-637X/832/2/182</identifier><language>eng</language><publisher>Philadelphia: The American Astronomical Society</publisher><subject>ABUNDANCE ; Accretion ; APPROXIMATIONS ; Astrophysics ; ASTROPHYSICS, COSMOLOGY AND ASTRONOMY ; ASYMMETRY ; Deposition ; Emission analysis ; Emission lines ; GALACTIC EVOLUTION ; GALAXIES ; galaxies: abundances ; galaxies: evolution ; galaxies: formation ; galaxies: starburst ; Kinematics ; MASS ; METALLICITY ; MORPHOLOGY ; Optical counterparts (astronomy) ; Recycled materials ; STARS ; Stellar mass ; Stellar winds</subject><ispartof>The Astrophysical journal, 2016-12, Vol.832 (2), p.182</ispartof><rights>2016. 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| ispartof | The Astrophysical journal, 2016-12, Vol.832 (2), p.182 |
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| language | eng |
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| subjects | ABUNDANCE Accretion APPROXIMATIONS Astrophysics ASTROPHYSICS, COSMOLOGY AND ASTRONOMY ASYMMETRY Deposition Emission analysis Emission lines GALACTIC EVOLUTION GALAXIES galaxies: abundances galaxies: evolution galaxies: formation galaxies: starburst Kinematics MASS METALLICITY MORPHOLOGY Optical counterparts (astronomy) Recycled materials STARS Stellar mass Stellar winds |
| title | SDSS-IV MaNGA: A SERENDIPITOUS OBSERVATION OF A POTENTIAL GAS ACCRETION EVENT |
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