Talk presented at IAU Symposium 362 (IAUS362): Predictive Power of Computational Astrophysics as a Discovery Tool (Online Video-Conference), November 8, 2021, https://doi.org/10.6084/m9.figshare.17125607
Spermiogenesis or Spermateleosis or metamorphosis of spermatid
Hydrodynamic Simulations and Time-dependent Photoionization Modeling of Starburst-driven Superwinds
1. Hydrodynamic Simulations and
Hydrodynamic Simulations and
Time-dependent Photoionization Modeling of
Time-dependent Photoionization Modeling of
Starburst-driven Superwinds
Starburst-driven Superwinds
Ashkbiz Danehkar
Department of Astronomy, University of Michigan
danehkar@umich.edu
In Collaborations with: Sally Oey, and Will Gray
IAUS 362: Predictive Power of Computational Astrophysics as a Discovery Tool, November 8, 2021
Image
Credit:
NASA,
ESA,
and
the
Hubble
Heritage
Team
(STScI/AURA)
2. 08 Nov 2021 IAUS362
2
Cooling Superwinds
M82 (Cigar Galaxy)
M82 (Cigar Galaxy)
Image
Credit:
NASA,
ESA,
and
the
Hubble
Heritage
Team
(STScI/AURA)
8. 08 Nov 2021 IAUS362
8
Hydrodynamic Simulations
Cooling Function (Λ) and Photo-Heating Function (Γ):
the Atomic Chemistry and Cooling Package MAIHEM (Gray + 2019):
Ion-by-ion Cooling Efficiencies from (Λi
) from Gnat & Ferland 2012.
Heating Efficiencies from (Γi
) made with photoionization cross sections
from Verner & Yakovlev 1995, and Verner, Ferland, et al. 1996.
9. 08 Nov 2021 IAUS362
9
Hydrodynamic Simulations
Model Grids: https://superwinds.astro.lsa.umich.edu/
Temperature Density
Danehkar, Oey, Gray, 2021 (ApJ 921,91)
21. 08 Nov 2021 IAUS362
21
Future Direction: Radiative Transfer
Implementation of detailed Radiative Transfer (RT) calculations
Improvement of radiative cooling and photo-heating processes
Stellar flux at a given distance (e.g. Klassen + 2014):
Inclusion of radiation pressure:
Included in MAIHEM Need RT calculations
23. 08 Nov 2021 IAUS362
23
Thank you for your attention
M82 (Cigar Galaxy)
M82 (Cigar Galaxy)
Image
Credit:
NASA,
ESA,
and
the
Hubble
Heritage
Team
(STScI/AURA)