The Effect of Radiation and Supernovae Feedback on LyC Escape in Local Star-forming Galaxies
Feedback is widely recognized as an essential condition for Lyman continuum (LyC) escape in star-forming galaxies. However, the mechanisms by which galactic outflows clear neutral gas and dust remain unclear. In this paper, we model the Mg ii 2796 Å, 2804 Å absorption and emission lines in 29 galaxi...
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| author | Cody A. Carr Renyue Cen Claudia Scarlata Xinfeng Xu Alaina Henry Rui Marques-Chaves Daniel Schaerer Ricardo O. Amorín M. S. Oey Lena Komarova Sophia Flury Anne Jaskot Alberto Saldana-Lopez Zhiyuan Ji Mason Huberty Timothy Heckman Göran Östlin Omkar Bait Matthew James Hayes Trinh Thuan Swara Ravindranath Danielle A. Berg Mauro Giavalisco Michael Rutkowski Sanchayeeta Borthakur John Chisholm Harry C. Ferguson Leo Michel-Dansac Anne Verhamme Gábor Worseck |
| author_facet | Cody A. Carr Renyue Cen Claudia Scarlata Xinfeng Xu Alaina Henry Rui Marques-Chaves Daniel Schaerer Ricardo O. Amorín M. S. Oey Lena Komarova Sophia Flury Anne Jaskot Alberto Saldana-Lopez Zhiyuan Ji Mason Huberty Timothy Heckman Göran Östlin Omkar Bait Matthew James Hayes Trinh Thuan Swara Ravindranath Danielle A. Berg Mauro Giavalisco Michael Rutkowski Sanchayeeta Borthakur John Chisholm Harry C. Ferguson Leo Michel-Dansac Anne Verhamme Gábor Worseck |
| author_sort | Cody A. Carr |
| collection | DOAJ |
| description | Feedback is widely recognized as an essential condition for Lyman continuum (LyC) escape in star-forming galaxies. However, the mechanisms by which galactic outflows clear neutral gas and dust remain unclear. In this paper, we model the Mg ii 2796 Å, 2804 Å absorption and emission lines in 29 galaxies taken from the Low- z LyC Survey to investigate the impact of (radiation and mechanical) feedback on LyC escape. Using constraints on Mg ^+ and photoionization models, we map the outflows’ neutral hydrogen content and predict ${f}_{{\rm{esc}}}^{{\rm{LyC}}}$ with a multiphase wind model. We measure mass-, momentum, and energy loading factors for the neutral winds, which carry up to 10% of the momentum and 1% of the energy in star formation rate (SFR)-based deposition rates. We use spectral energy distribution template fitting to determine the relative ages of stellar populations, allowing us to identify radiation feedback dominant systems. We then examine feedback related properties (stellar age, loading factors, etc.) under conditions that optimize feedback efficiency, specifically high-SFR surface density and compactness. Our findings indicate that the strongest leakers are radiation feedback dominant, lack deep Mg ii absorption features, but have extended broad components in higher-ionization lines like [O iii ] 5007 Å, as observed by Amorín et al. In contrast, galaxies experiencing supernovae feedback typically exhibit weaker ${f}_{{\rm{esc}}}^{{\rm{LyC}}}$ and show evidence of outflows in both Mg ii and higher-ionization lines. We attribute these findings to enhanced LyC escape facilitated by turbulence and cloud fragmentation in intense radiation fields, prolonged in low-metallicity environments experiencing delayed supernova feedback. |
| format | Article |
| id | doaj-art-8be5b71cd4e144e6a1cb6e9c1621adcf |
| institution | DOAJ |
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| language | English |
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| spelling | doaj-art-8be5b71cd4e144e6a1cb6e9c1621adcf2025-08-20T02:40:29ZengIOP PublishingThe Astrophysical Journal1538-43572025-01-01982213710.3847/1538-4357/adb72fThe Effect of Radiation and Supernovae Feedback on LyC Escape in Local Star-forming GalaxiesCody A. Carr0https://orcid.org/0000-0003-4166-2855Renyue Cen1https://orcid.org/0000-0001-8531-9536Claudia Scarlata2https://orcid.org/0000-0002-9136-8876Xinfeng Xu3https://orcid.org/0000-0002-9217-7051Alaina Henry4https://orcid.org/0000-0002-6586-4446Rui Marques-Chaves5https://orcid.org/0000-0001-8442-1846Daniel Schaerer6https://orcid.org/0000-0001-7144-7182Ricardo O. Amorín7https://orcid.org/0000-0001-5758-1000M. S. Oey8https://orcid.org/0000-0002-5808-1320Lena Komarova9https://orcid.org/0000-0002-5235-7971Sophia Flury10https://orcid.org/0000-0002-0159-2613Anne Jaskot11https://orcid.org/0000-0002-6790-5125Alberto Saldana-Lopez12https://orcid.org/0000-0001-8419-3062Zhiyuan Ji13https://orcid.org/0000-0001-7673-2257Mason Huberty14https://orcid.org/0009-0002-9932-4461Timothy Heckman15https://orcid.org/0000-0001-6670-6370Göran Östlin16https://orcid.org/0000-0002-3005-1349Omkar Bait17https://orcid.org/0000-0003-2722-8841Matthew James Hayes18https://orcid.org/0000-0001-8587-218XTrinh Thuan19https://orcid.org/0000-0001-5331-2030Swara Ravindranath20https://orcid.org/0000-0002-5269-6527Danielle A. Berg21https://orcid.org/0000-0002-4153-053XMauro Giavalisco22https://orcid.org/0000-0002-7831-8751Michael Rutkowski23https://orcid.org/0000-0001-7016-5220Sanchayeeta Borthakur24https://orcid.org/0000-0002-2724-8298John Chisholm25https://orcid.org/0000-0002-0302-2577Harry C. Ferguson26https://orcid.org/0000-0001-7113-2738Leo Michel-Dansac27Anne Verhamme28https://orcid.org/0000-0002-2201-1865Gábor Worseck29https://orcid.org/0000-0003-0960-3580Center for Cosmology and Computational Astrophysics, Institute for Advanced Study in Physics, Zhejiang University , Hangzhou 310058, People’s Republic of China ; codycarr24@gmail.com, renyuecen@zju.edu.cn; Institute of Astronomy, School of Physics, Zhejiang University , Hangzhou 310058, People’s Republic of ChinaCenter for Cosmology and Computational Astrophysics, Institute for Advanced Study in Physics, Zhejiang University , Hangzhou 310058, People’s Republic of China ; codycarr24@gmail.com, renyuecen@zju.edu.cn; Institute of Astronomy, School of Physics, Zhejiang University , Hangzhou 310058, People’s Republic of ChinaMinnesota Institute for Astrophysics, School of Physics and Astronomy, University of Minnesota , 316 Church Street SE, Minneapolis, MN 55455, USADepartment of Physics and Astronomy, Northwestern University , 2145 Sheridan Road, Evanston, IL 60208, USA; Center for Interdisciplinary Exploration and Research in Astrophysics (CIERA), Northwestern University , 1800 Sherman Avenue, Evanston, IL 60201, USASpace Telescope Science Institute , 3700 San Martin Drive, Baltimore, MD 21218, USA; Center for Astrophysical Sciences, Department of Physics & Astronomy, Johns Hopkins University , Baltimore, MD 21218, USAObservatoire de Genève, Université de Genève , 51 Ch. des Maillettes, 1290 Versoix, SwitzerlandObservatoire de Genève, Université de Genève , 51 Ch. des Maillettes, 1290 Versoix, SwitzerlandInstituto de Astrofísica de Andalucía (CSIC) , Apartado 3004, 18080 Granada, SpainAstronomy Department, University of Michigan , Ann Arbor, MI 48109, USAAstronomy Department, University of Michigan , Ann Arbor, MI 48109, USADepartment of Astronomy, University of Massachusetts , Amherst, MA 01003, USA; Institute for Astronomy, University of Edinburgh , Royal Observatory, Edinburgh, EH9 3HJ, UKDepartment of Astronomy, Williams College , Williamstown, MA 01267, USADepartment of Astronomy, Oskar Klein Centre, Stockholm University , 106 91 Stockholm, SwedenSteward Observatory, University of Arizona , 933 N. Cherry Avenue, Tucson, AZ 85721, USAMinnesota Institute for Astrophysics, School of Physics and Astronomy, University of Minnesota , 316 Church Street SE, Minneapolis, MN 55455, USACenter for Astrophysical Sciences, Department of Physics & Astronomy, Johns Hopkins University , Baltimore, MD 21218, USADepartment of Astronomy, Oskar Klein Centre, Stockholm University , 106 91 Stockholm, SwedenObservatoire de Genève, Université de Genève , 51 Ch. des Maillettes, 1290 Versoix, Switzerland; SKA Organization , Jodrell Bank, Lower Whitington, Macclesfield, SK11 9FT, UKDepartment of Astronomy, Oskar Klein Centre, Stockholm University , 106 91 Stockholm, SwedenAstronomy Department, University of Virginia , Charlottesville, VA 22904, USAAstrophysics Science Division, NASA Goddard Space Flight Center , 8800 Greenbelt Road, Greenbelt, MD 20771, USA; Center for Research and Exploration in Space Science and Technology II, Department of Physics, Catholic University of America , 620 Michigan Avenue N.E., Washington DC 20064, USADepartment of Astronomy, The University of Texas at Austin , 2515 Speedway, Stop C1400, Austin, TX 78712, USADepartment of Astronomy, University of Massachusetts , Amherst, MA 01003, USADepartment of Physics and Astronomy, Minnesota State University , Mankato, MN 56001, USASchool of Earth & Space Exploration, Arizona State University , Tempe, AZ 85287, USADepartment of Astronomy, The University of Texas at Austin , 2515 Speedway, Stop C1400, Austin, TX 78712-1205, USASpace Telescope Science Institute , 3700 San Martin Drive, Baltimore, MD 21218, USAAix Marseille Univ, CNRS, CNES, LAM , Marseille, FranceObservatoire de Genève, Université de Genève , 51 Ch. des Maillettes, 1290 Versoix, SwitzerlandInstitut für Physik und Astronomie, Universität Potsdam , Karl-Liebknecht-Str. 24/25, D-14476 Potsdam, GermanyFeedback is widely recognized as an essential condition for Lyman continuum (LyC) escape in star-forming galaxies. However, the mechanisms by which galactic outflows clear neutral gas and dust remain unclear. In this paper, we model the Mg ii 2796 Å, 2804 Å absorption and emission lines in 29 galaxies taken from the Low- z LyC Survey to investigate the impact of (radiation and mechanical) feedback on LyC escape. Using constraints on Mg ^+ and photoionization models, we map the outflows’ neutral hydrogen content and predict ${f}_{{\rm{esc}}}^{{\rm{LyC}}}$ with a multiphase wind model. We measure mass-, momentum, and energy loading factors for the neutral winds, which carry up to 10% of the momentum and 1% of the energy in star formation rate (SFR)-based deposition rates. We use spectral energy distribution template fitting to determine the relative ages of stellar populations, allowing us to identify radiation feedback dominant systems. We then examine feedback related properties (stellar age, loading factors, etc.) under conditions that optimize feedback efficiency, specifically high-SFR surface density and compactness. Our findings indicate that the strongest leakers are radiation feedback dominant, lack deep Mg ii absorption features, but have extended broad components in higher-ionization lines like [O iii ] 5007 Å, as observed by Amorín et al. In contrast, galaxies experiencing supernovae feedback typically exhibit weaker ${f}_{{\rm{esc}}}^{{\rm{LyC}}}$ and show evidence of outflows in both Mg ii and higher-ionization lines. We attribute these findings to enhanced LyC escape facilitated by turbulence and cloud fragmentation in intense radiation fields, prolonged in low-metallicity environments experiencing delayed supernova feedback.https://doi.org/10.3847/1538-4357/adb72fCircumgalactic mediumNeutral hydrogen cloudsUltraviolet astronomyGalactic windsReionizationInterstellar medium |
| spellingShingle | Cody A. Carr Renyue Cen Claudia Scarlata Xinfeng Xu Alaina Henry Rui Marques-Chaves Daniel Schaerer Ricardo O. Amorín M. S. Oey Lena Komarova Sophia Flury Anne Jaskot Alberto Saldana-Lopez Zhiyuan Ji Mason Huberty Timothy Heckman Göran Östlin Omkar Bait Matthew James Hayes Trinh Thuan Swara Ravindranath Danielle A. Berg Mauro Giavalisco Michael Rutkowski Sanchayeeta Borthakur John Chisholm Harry C. Ferguson Leo Michel-Dansac Anne Verhamme Gábor Worseck The Effect of Radiation and Supernovae Feedback on LyC Escape in Local Star-forming Galaxies The Astrophysical Journal Circumgalactic medium Neutral hydrogen clouds Ultraviolet astronomy Galactic winds Reionization Interstellar medium |
| title | The Effect of Radiation and Supernovae Feedback on LyC Escape in Local Star-forming Galaxies |
| title_full | The Effect of Radiation and Supernovae Feedback on LyC Escape in Local Star-forming Galaxies |
| title_fullStr | The Effect of Radiation and Supernovae Feedback on LyC Escape in Local Star-forming Galaxies |
| title_full_unstemmed | The Effect of Radiation and Supernovae Feedback on LyC Escape in Local Star-forming Galaxies |
| title_short | The Effect of Radiation and Supernovae Feedback on LyC Escape in Local Star-forming Galaxies |
| title_sort | effect of radiation and supernovae feedback on lyc escape in local star forming galaxies |
| topic | Circumgalactic medium Neutral hydrogen clouds Ultraviolet astronomy Galactic winds Reionization Interstellar medium |
| url | https://doi.org/10.3847/1538-4357/adb72f |
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