Emission Lines from Superwinds of Super Star Clusters

Talk presented at American Astronomical Society (AAS) Winter 237st Virtual Meeting, USA, January 2021

Transcript

1. Ashkbiz Danehkar
   Department of Astronomy, University of Michigan
   danehkar@umich.edu
   In Collaborations with: Sally Oey, and Will Gray
   237th AAS Meeting, Virtually Anywhere, January 12th, 2021
   Emission Lines from
   Superwinds of
   Super Star Clusters
   

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2. 2
   Superwinds and Super Bubbles
   Schematic View of Superwind and Super Bubble (Romero+ 2018, Strickland+ 2003)
   

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3. 3
   Catastrophic Cooling of Superwind
   NGC 2366
   Green Pea analog!
   [O II], [O III] and Continuum (Oey+ 2017)
   Mrk 71
   Oey + 2017
   

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4. 4
   Superwind Theory
   
   Adiabatic Solution
   – Chevalier & Clegg 1985
   – Without Radiative Cooling
   
   Radiative Solution
   – Silich et al. 2004
   – With Radiative Cooling
   Silich + 2004
   

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5. 5
   Superwind Theory
   
   Superbubble Theory
   – Castor+ 1975
   – Weaver+ 1977
   Weaver+ 1977
   Weaver+ 1977
   

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6. 6
   Hydrodynamic Simulation of Superwinds
   Radiative Cooling
   Silich + 2004
   Silich + 2004
   

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7. 7
   Hydrodynamic Simulation of Superwinds
   MAIHEM: modified version of FLASH: Gray+2015, 2016, 2017
   Gray, Oey, Silich + 2019
   

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8. 8
   Hydrodynamic Simulation of Superwinds
   MAIHEM Simulations in FLASH
   Temperature Density
   Danehkar, Oey, Gray, 2021
   

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9. 9
   Hydrodynamic Simulation of Superwinds
   Radiative Cooling
   
   adiabatic (AC), adiabatic with bubble (AB),
   
   catastrophic cooling (CC), catastrophic cooling the bubble (CB)
   Temperature discrepancy factor (fT = Trad / Tadi)
   Danehkar, Oey, Gray, 2021
   

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10. 10
    Diagnostic Diagrams
    Emission Lines of Superwinds
    Danehkar, Oey, Gray, 2021
    Gray, Oey, Silich + 2019
    

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11. 11
    Diagnostic Diagrams
    Danehkar, Oey, Gray, 2021
    Optical Emission Lines (radiation-bounded)
    

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12. 12
    Diagnostic Diagrams
    Danehkar, Oey, Gray, 2021
    UV Emission Lines (radiation-bounded)
    

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13. 13
    Diagnostic Diagrams
    Danehkar, Oey, Gray, 2021
    UV Emission Lines (partially density-bounded)
    

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14. 14
    Diagnostic Diagrams
    Danehkar, Oey, Gray, 2021
    UV Emission Lines (radiation-bounded)
    

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15. 15
    Diagnostic Diagrams
    Danehkar, Oey, Gray, 2021
    UV Emission Lines (partially density-bounded)
    

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16. 16
    Summary
    
    Superwinds Theory
     Without Radiative Cooling (Chevalier & Clegg 85)
     With Radiative Cooling (Silich + 2004)
    
    Superwind Suppression
    – Catastrophic Cooling (Gray, Oey, Silich, 2019)
    – Parametric Investigation (Danehkar, Oey, Gray, 2021)
    
    Emission-line Predictions (Danehkar, Oey, Gray, 2021)
    – Emission flux calculated for adiabatic and cooling solutions
    – BPT & UV Diagnostic Diagrams
    

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17. 17
    Thank you for your attention
    

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