Bubble-Induced Star Formation in Dwarf Irregular Galaxies Daisuke Kawata 1 , Brad Gibson 2 , David Barnes 1 , Robert Grand 1 , Awat Rahimi 3 1 Mullard Space Science Laboratory, University College London, UK 2 Jeremiah Horrocks Institute, U. Central Lancashire, UK 3 National Astronomical Observatory, Chinese Academy of Science, China Mullard Space Science Laboratory Kawata et al. arXiv:1306.6632
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Bubble-Induced Star Formation in Dwarf Irregular Galaxies · 2013-07-10 · Bubble-Induced Star Formation in Dwarf Irregular Galaxies Daisuke Kawata1, Brad Gibson2, David Barnes1,
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Bubble-Induced Star Formationin Dwarf Irregular Galaxies
Daisuke Kawata1, Brad Gibson2, David Barnes1, Robert Grand1, Awat Rahimi3
1Mullard Space Science Laboratory, University College London, UK2Jeremiah Horrocks Institute, U. Central Lancashire, UK
3National Astronomical Observatory, Chinese Academy of Science, China
Mullard Space Science Laboratory
Kawata et al. arXiv:1306.6632
Why dIrr?
• Small, but forming stars continuously:Typical stellar mass ~ 107 M⊙◉☉⨀gas mass ~108 M⊙◉☉⨀
• An easier(?) system to simulate:require fewer particles to resolve smaller mass scale phenomena.
• Powerful laboratory to study star formation and feedback effects.(e.g. Mori et al. 1997; Carraro et al. 2001; Ricotti & Gnedin 2002; Kawata et al. 2006; Kaufmann et al. 2007, Stinson et al. 2007,09; Governato et al. 2010; Sawala et al. 2011; Revaz & Jablonka 2012; Bekki et al. 2013, Simpson et al. 2013; Teyssier et al. 2013; Schroyen et al. 2013)
Kudrtizki
Wolf-Lundmark Melotte (WLM) dIrr:Local Group dIrr, but relatively isolated
Jackson et al. 2007
Average SFR in the last ~10 Gyr: 0.0002 M⊙◉☉⨀ yr-1 (Dolphin 2000) Current SFR~0.006 M⊙◉☉⨀ yr-1 (Hunter et al. 2010)