Orbit properties of massive prolate galaxies in the Illustris simulation

  title={Orbit properties of massive prolate galaxies in the Illustris simulation},
  author={Yougang Wang and Shude Mao and Hongyu Li and Dandan Xu and Xuelei Chen and Volker Springel},
  journal={Monthly Notices of the Royal Astronomical Society},
We explore orbit properties of 35 prolate-triaxial galaxies selected from the Illustris cosmological hydrodynamic simulation. We present a detailed study of their orbit families, and also analyse relations between the relative abundance of the orbit families and the spin parameter, triaxiality, the ratio of the angular momentum and the baryon fraction. We find that box orbits dominate the orbit structure for most prolate-triaxial galaxies, especially in the central region. The fraction of… 
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