108 citations · 166 across the 10 of their papers we have counts for
10 papers
Triaxial Schwarzschild Models of Brightest Cluster Galaxies with Long-Slit LBT Data
Stefano de Nicola, Roberto P. Saglia, Jens Thomas +3
We present new long-slit stellar kinematics for a sample of 21 Brightest Cluster Galaxies (BCGs) and triaxial Schwarzschild models for 16 of these objects using our orbit modelling…
Eight New Ultramassive Black Hole Masses confirm Best Correlation with Galaxy Core Sizes
Stefano de Nicola, Jens Thomas, Roberto P. Saglia +3
We analyse black-hole scaling relations at the high-mass end, focusing in particular on the regime of ultra-massive black holes, $\mathrm{M}_\mathrm{BH} > 10^{10}\,\mathrm{M}_\odot…
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…
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…
Triaxial Schwarzschild Models of NGC 708: a 10-billion solar mass black hole in a low dispersion galaxy with a Kroupa IMF
Stefano de Nicola, Jens Thomas, Roberto P. Saglia +3
We report the discovery of a M Supermassive Black Hole (BH) at the centre of NGC 708, the Brightest Cluster Galaxy of Abell 262. Such high B…
Stellar populations of massive early-type galaxies observed by MUSE
Taniya Parikh, Roberto Saglia, Jens Thomas +3
Stellar population studies of massive early-type galaxies (ETGs) suggest that the stellar initial mass function may not be universal. In particular, the centres of ETGs seem to con…
Dynamical stellar mass-to-light ratio gradients: Evidence for very centrally concentrated IMF variations in ETGs?
Kianusch Mehrgan, Jens Thomas, Roberto Saglia +4
Evidence from different probes of the stellar initial mass function (IMF) of massive early-type galaxies (ETGs) has repeatedly converged on IMFs more bottom-heavy than in the Milky…
SMART: A new implementation of Schwarzschild's Orbit Superposition technique for triaxial galaxies and its application to an N-body merger simulation
Bianca Neureiter, Jens Thomas, Roberto Saglia +6
We present SMART, a new 3D implementation of the Schwarzschild Method and its application to a triaxial N-body merger simulation. SMART fits full line-of-sight velocity distributio…
Galaxy environment in the 3D-HST fields. Witnessing the onset of satellite quenching at z ~ 1-2
M. Fossati, D. J. Wilman, J. T. Mendel +25
We make publicly available a catalog of calibrated environmental measures for galaxies in the five 3D-HST/CANDELS deep fields. Leveraging the spectroscopic and grism redshifts from…
Breaking the degeneracy between anisotropy and mass: The dark halo of the E0 galaxy NGC 6703
Ortwin Gerhard, Gunther Jeske, R. P. Saglia +1
(abridged) We have measured line-of-sight velocity profiles (VPs) in the E0 galaxy NGC 6703 out to 2.6 R_e. From these data we constrain the mass distribution and the anisotropy of…