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The Response of Galactic Gas Disks to A Spiral Density-wave Potential

The Response of Galactic Gas Disks to A Spiral Density-wave Potential. Speaker : Hsiang-Hsu Wang Collaborator: Dr. Chi Yuan Institute of Astronomy and Astrophysics, Academia Sinica, Taiwan, R.O.C. EANAM 2006. Galactic Shock and star formation. M81. M51. near IR (3.4um, Spitzer).

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The Response of Galactic Gas Disks to A Spiral Density-wave Potential

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  1. The Response of Galactic Gas Disks to A Spiral Density-wave Potential Speaker : Hsiang-Hsu Wang Collaborator: Dr. Chi Yuan Institute of Astronomy and Astrophysics, Academia Sinica, Taiwan, R.O.C. EANAM 2006

  2. Galactic Shock and star formation M81 M51 near IR (3.4um, Spitzer) visible light JHK band visible light spiral potential gas response galactic shock

  3. Chaotic structure M51 M81 Simulation Near IR image (Spitzer) Near IR image (8um, Spitzer) Rayleigh shear instability

  4. Higher order response Azimuthal cut at different radius: 7.3, 12, 16, 18 kpc Density response on disk plane ILR = 3.03 kpc CR = 12.25 kpc OLR = 21.22 kpc 4:1 resonance: 7.35/17.14 kpc 6:1 resonance: 8.71/15.8 kpc

  5. With self-gravity

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