3 papers
astro-ph.GA2024
The VIRUS-dE Survey II: Cuspy and round halos in dwarf ellipticals -- A result of early assembly?
Mathias Lipka, Jens Thomas, Roberto Saglia +3
We analyze the dark matter (DM) halos of a sample of dwarf Ellitpicals (dE) and discuss cosmological and evolutionary implications. Using orbit modeling we recover their density sl…
astro-ph.GA2024
The VIRUS-dE Survey I: Stars in dwarf elliptical galaxies - 3D dynamics and radially resolved stellar initial mass functions
Mathias Lipka, Jens Thomas, Roberto Saglia +9
We analyse the stellar structure of a sample of dwarf ellipticals (dE) inhabiting various environments within the Virgo cluster. Integral-field observations with a high spectral re…
astro-ph.GA2021
A novel approach to optimize the regularization and evaluation of dynamical models using a model selection framework
Mathias Lipka, Jens Thomas
Orbit superposition models are a non-parametric dynamical modelling technique to determine the mass of a galaxy's central supermassive black hole (SMBH), its stars, or its dark-mat…