• Corpus ID: 118672798

Mass Models of Dwarf Spheroidal Galaxies with Variable Stellar Anisotropy. I. Jeans Analysis

  title={Mass Models of Dwarf Spheroidal Galaxies with Variable Stellar Anisotropy. I. Jeans Analysis},
  author={Sergey Mashchenko},
  journal={arXiv: Astrophysics of Galaxies},
  • S. Mashchenko
  • Published 30 April 2015
  • Physics
  • arXiv: Astrophysics of Galaxies
Using a flexible galactic model with variable stellar velocity anisotropy, I apply the classical Jeans mass modeling approach to the five dwarf spheroidal galaxies with the largest homogeneous datasets of stellar line-of-sight velocities (between 330 and 2500 stars per galaxy) – Carina, Fornax, Leo I, Sculptor, and Sextans. I carry out an exhaustive model parameter search, assigning absolute probabilities to each parameter combination. My main finding is that there is a well defined radius… 

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