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Hydrodynamic Simulations of Starburst-driven Superwinds

Hydrodynamic Simulations of Starburst-driven Superwinds

Talk presented at Challenges and Innovations in Computational Astrophysics - III (ChaICA-III; Virtual), 21 June 2021

Ashkbiz Danehkar

June 21, 2021
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  1. Ashkbiz Danehkar
    Department of Astronomy, University of Michigan
    [email protected]
    In Collaborations with: Sally Oey, and Will Gray
    Challenges and Innovations in Computational Astrophysics - III, June 21, 2021
    Hydrodynamic Simulations of
    Starburst-driven Superwinds
    Superbubble in NGC 3079 (Credit: X-ray:NASA/CXC/UMich/J-T Li;Optical:NASA/STScI)

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  2. 21/06/2021 ChaICA-III
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    Outline
     Superwinds & Superbubbles
    – Superwind Theory: Adiabatic Solution
    – Superbubble & Superwind Theory
     Catastrophic Cooling
    – Superwind Theory: Radiative Solution
     Hydrodynamic Simulations
     Photoionization Modeling
    – Diagnostic Diagrams
     Hydrodynamic and Photoionization Results
     Summary & Future Directions

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  3. 21/06/2021 ChaICA-III
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    Superwinds & Superbubbles
    Superwind and Superbubble in NGC 3079
    (Credit: X-ray:NASA/CXC/UMich/J-T Li;Optical:NASA/STScI)

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  4. 21/06/2021 ChaICA-III
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    Superwinds & Superbubbles
    Superwind and Superbubble (Romero+ 2018, Strickland+ 2003)

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  5. 21/06/2021 ChaICA-III
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    Superwind Theory: Adiabatic
    Adiabatic Solutions
    – Adiabatic Wind (γ=5/3)
    – Chevalier & Clegg 1985
    Chevalier & Clegg 1985

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  6. 21/06/2021 ChaICA-III
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    Superwind Theory: Adiabatic
    Adiabatic Bubble Solutions
    – Castor+ 1975
    – Weaver+ 1977
    Weaver+ 1977
    Weaver+ 1977

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  7. 21/06/2021 ChaICA-III
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    Superwind Theory
    Gray, Oey, Silich + 2019

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  8. 21/06/2021 ChaICA-III
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    Catastrophic Cooling
    NGC 2366
    Green Pea analog!
    [O II], [O III] and Continuum (Oey+ 2017)
    Mrk 71
    Oey + 2017

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  9. 21/06/2021 ChaICA-III
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    Catastrophic Cooling
    Super Star Cluster NGC 5253 (Turner et al. 2017)

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  10. 21/06/2021 ChaICA-III
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    Superwind Theory: Radiative

    Radiative Solutions
    – Silich et al. 2004
    – With Radiative Cooling
    Silich + 2004

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  11. 21/06/2021 ChaICA-III
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    Superwind Theory: Radiative
    Radiative Cooling
    Silich + 2004
    Silich + 2004

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  12. 21/06/2021 ChaICA-III
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    Hydrodynamic Simulations
    Danehkar, Oey, Gray, 2021

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  13. 21/06/2021 ChaICA-III
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    Hydrodynamic Simulations
    Danehkar, Oey, Gray, 2021

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  14. 21/06/2021 ChaICA-III
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    Hydrodynamic Simulations
    MAIHEM Package built on FLASH code (Will + 2015)
    Temperature Density
    Danehkar, Oey, Gray, 2021

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  15. 21/06/2021 ChaICA-III
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    Hydrodynamic Simulations
    Radiative Cooling

    adiabatic bubble (AB), adiabatic pressure-confined (AP)

    catastrophic cooling (CC), catastrophic cooling bubble (CB)
    Temperature discrepancy factor (fT = Tw / Tadi)
    Danehkar, Oey, Gray, 2021

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  16. 21/06/2021 ChaICA-III
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    Danehkar, Oey, Gray, 2021
    Hydrodynamic Simulations

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  17. 21/06/2021 ChaICA-III
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    Photoionization Modeling
    Danehkar, Oey, Gray, 2021
    Photoionization
    + Hydro Collisional Ionization

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  18. 21/06/2021 ChaICA-III
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    Photoionization Modeling
    Danehkar, Oey, Gray, 2021
    PI (Pure Photoionization), CPI (Photoionization + Hydro Collisional Ionization)

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  19. 21/06/2021 ChaICA-III
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    Diagnostic Diagrams
    Emission Lines of Superwinds
    Danehkar, Oey, Gray, 2021
    Gray, Oey, Silich + 2019

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  20. 21/06/2021 ChaICA-III
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    BPT Diagnostic Diagrams
    Danehkar, Oey, Gray, 2021
    Optical Emission Lines (radiation-bounded)

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  21. 21/06/2021 ChaICA-III
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    UV Diagnostic Diagrams
    Danehkar, Oey, Gray, 2021
    UV Emission Lines (radiation-bounded)

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  22. 21/06/2021 ChaICA-III
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    UV Diagnostic Diagrams
    UV Emission Lines (radiation-bounded)
    Danehkar, Oey, Gray, 2021

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  23. 21/06/2021 ChaICA-III
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    Model Results
    Danehkar, Oey, Gray, 2021
     Hydrodynamics & Photoionization Results
    https://superwinds.astro.lsa.umich.edu/

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  24. 21/06/2021 ChaICA-III
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    Summary
     Superwind Theory
    – Adiabatic Solution (Chevalier & Clegg 85)
    – Radiative Solution (Silich + 2004)
     Hydrodynamic Simulations
    – Catastrophic Cooling (Gray, Oey, Silich, 2019)
    – Radiative Cooling increases with (Danehkar, Oey, Gray, 2021):
    • higher mass-loading, lower outflow velocity, higher metallicity
     Photoionization Modeling (Photoionization + Hydro Collisional Ionization)
    – Emission lines predicted for adiabatic and cooling outflows
    – BPT & UV Diagnotic Diagrams
     Future Directions
    – Non-equilibrium Photoionization (Photoionization + NEI; next work)
    – 2-D simulations: Instability-induced gas clumping

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  25. 21/06/2021 ChaICA-III
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    Thank you for your attention
    Superbubble in NGC 3079 (Credit: X-ray:NASA/CXC/UMich/J-T Li;Optical:NASA/STScI)

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