• DOI:10.1093/mnras/stac1375
• Corpus ID: 244270769

Early-type galaxy density profiles from IllustrisTNG – III. Effects on outer kinematic structure

@article{Wang2021EarlytypeGD,
  title={Early-type galaxy density profiles from IllustrisTNG – III. Effects on outer kinematic structure},
  author={Yunchong Wang and Shude Mao and Mark Vogelsberger and Volker Springel and Lars E. Hernquist and Risa H. Wechsler},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2021}
}

• Yunchong Wang, S. Mao, +3 authors R. Wechsler
• Published 16 November 2021
• Physics, Geology
• Monthly Notices of the Royal Astronomical Society

Early-type galaxies (ETGs) possess total density profiles close to isothermal, which can lead to non-Gaussian line-of-sight velocity dispersion (LOSVD) under anisotropic stellar orbits. However, recent observations of local ETGs in the MASSIVE Survey reveal outer kinematic structures at 1.5Reff (effective radius) that are inconsistent with fixed isothermal density profiles; the authors proposed varying density profiles as an explanation. We aim to verify this conjecture and understand the…