Hydrodynamic Simulations of Starburst-driven Superwinds

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

Transcript

1. Ashkbiz Danehkar Department of Astronomy, University of Michigan danehkar@umich.edu 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)
2. 21/06/2021 ChaICA-III 2 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
3. 21/06/2021 ChaICA-III 3 Superwinds & Superbubbles Superwind and Superbubble in NGC 3079 (Credit: X-ray:NASA/CXC/UMich/J-T Li;Optical:NASA/STScI)
4. 21/06/2021 ChaICA-III 4 Superwinds & Superbubbles Superwind and Superbubble (Romero+ 2018, Strickland+ 2003)
5. 21/06/2021 ChaICA-III 5 Superwind Theory: Adiabatic Adiabatic Solutions – Adiabatic Wind (γ=5/3) – Chevalier & Clegg 1985 Chevalier & Clegg 1985
6. 21/06/2021 ChaICA-III 6 Superwind Theory: Adiabatic Adiabatic Bubble Solutions – Castor+ 1975 – Weaver+ 1977 Weaver+ 1977 Weaver+ 1977
7. 21/06/2021 ChaICA-III 7 Superwind Theory Gray, Oey, Silich + 2019
8. 21/06/2021 ChaICA-III 8 Catastrophic Cooling NGC 2366 Green Pea analog! [O II], [O III] and Continuum (Oey+ 2017) Mrk 71 Oey + 2017
9. 21/06/2021 ChaICA-III 9 Catastrophic Cooling Super Star Cluster NGC 5253 (Turner et al. 2017)
10. 21/06/2021 ChaICA-III 10 Superwind Theory: Radiative  Radiative Solutions – Silich et al. 2004 – With Radiative Cooling Silich + 2004
11. 21/06/2021 ChaICA-III 11 Superwind Theory: Radiative Radiative Cooling Silich + 2004 Silich + 2004
12. 21/06/2021 ChaICA-III 12 Hydrodynamic Simulations Danehkar, Oey, Gray, 2021
13. 21/06/2021 ChaICA-III 13 Hydrodynamic Simulations Danehkar, Oey, Gray, 2021
14. 21/06/2021 ChaICA-III 14 Hydrodynamic Simulations MAIHEM Package built on FLASH code (Will + 2015) Temperature Density Danehkar, Oey, Gray, 2021
15. 21/06/2021 ChaICA-III 15 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
16. 21/06/2021 ChaICA-III 16 Danehkar, Oey, Gray, 2021 Hydrodynamic Simulations
17. 21/06/2021 ChaICA-III 17 Photoionization Modeling Danehkar, Oey, Gray, 2021 Photoionization + Hydro Collisional Ionization
18. 21/06/2021 ChaICA-III 18 Photoionization Modeling Danehkar, Oey, Gray, 2021 PI (Pure Photoionization), CPI (Photoionization + Hydro Collisional Ionization)
19. 21/06/2021 ChaICA-III 19 Diagnostic Diagrams Emission Lines of Superwinds Danehkar, Oey, Gray, 2021 Gray, Oey, Silich + 2019
20. 21/06/2021 ChaICA-III 20 BPT Diagnostic Diagrams Danehkar, Oey, Gray, 2021 Optical Emission Lines (radiation-bounded)
21. 21/06/2021 ChaICA-III 21 UV Diagnostic Diagrams Danehkar, Oey, Gray, 2021 UV Emission Lines (radiation-bounded)
22. 21/06/2021 ChaICA-III 22 UV Diagnostic Diagrams UV Emission Lines (radiation-bounded) Danehkar, Oey, Gray, 2021
23. 21/06/2021 ChaICA-III 23 Model Results Danehkar, Oey, Gray, 2021  Hydrodynamics & Photoionization Results https://superwinds.astro.lsa.umich.edu/
24. 21/06/2021 ChaICA-III 24 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
25. 21/06/2021 ChaICA-III 25 Thank you for your attention Superbubble in NGC 3079 (Credit: X-ray:NASA/CXC/UMich/J-T Li;Optical:NASA/STScI)