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Driving Spiral Arms in the Circumstellar Disks of HD 100546 and HD 141569A

  • Authors: Alice C. Quillen, Peggy Varnière, Ivan Minchev, and Adam Frank

Quillen et al. 2005 The Astronomical Journal 129 2481.

  • Provider: AAS Journals

Caption: Fig. 4.

Effect of the sound speed on spiral structure driven by an external planet or bound star. Two simulations, F and L, are shown for times when the planet is at periapse (left panels), at apoapse (right panels), and at an intermediate time (middle panels). The planets have eccentricities ﹩e=0.25﹩ and planet mass ratios ﹩q=5\times 10^{-3}﹩. The simulations shown in the top panels have disk aspect ratios of ﹩h/ r=0.04﹩, and those shown in the bottom panels have ﹩h/ r=0.10﹩. Thicker (or higher sound speed) disks exhibit lower amplitude and a more open spiral structure.

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