Publications (13)
The stellar structure and kinematics of dwarf spheroidal galaxies formed by tidal stirring
Ewa L. Lokas, Stelios Kazantzidis, Jaroslaw Klimentowski +2
Using high-resolution N-body simulations we study the stellar properties of dwarf spheroidal galaxies resulting from the tidally induced morphological transformation of disky dwarf…
Formation and Hardening of Supermassive Black Hole Binaries in Minor Mergers of Disk Galaxies
Fazeel Mahmood Khan, Ingo Berentzen, Peter Berczik +4
We model for the first time the complete orbital evolution of a pair of Supermassive Black Holes (SMBHs) in a 1:10 galaxy merger of two disk dominated gas-rich galaxies, from the s…
Tidal stirring of Milky Way satellites: a simple picture with the integrated tidal force
Ewa L. Lokas, Stelios Kazantzidis, Lucio Mayer +1
Most of dwarf spheroidal galaxies in the Local Group were probably formed via environmental processes like the tidal interaction with the Milky Way. We study this process via N-bod…
On the Efficiency of the Tidal Stirring Mechanism for the Origin of Dwarf Spheroidals: Dependence on the Orbital and Structural Parameters of the Progenitor Disky Dwarfs
Stelios Kazantzidis, Ewa L. Lokas, Simone Callegari +2
(Abridged) The tidal stirring model posits the formation of dSph galaxies via the tidal interactions between rotationally-supported dwarfs and MW-sized host galaxies. Using a set o…
Recoiling Massive Black Holes in Gas-Rich Galaxy Mergers
Javiera Guedes, Piero Madau, Lucio Mayer +1
The asymmetric emission of gravitational waves produced during the coalescence of a massive black hole (MBH) binary imparts a velocity "kick" to the system that can displace the ho…
Forming Realistic Late-Type Spirals in a LCDM Universe: The Eris Simulation
Javiera Guedes, Simone Callegari, Piero Madau +1
Simulations of the formation of late-type spiral galaxies in a cold dark matter LCDM universe have traditionally failed to yield realistic candidates. Here we report a new cosmolog…
Pairing of Supermassive Black Holes in unequal-mass galaxy mergers
Simone Callegari, Lucio Mayer, Stelios Kazantzidis +4
We examine the pairing process of supermassive black holes (SMBHs) down to scales of 20-100 pc using a set of N-body/SPH simulations of binary mergers of disk galaxies with mass ra…
Observability of Dual Active Galactic Nuclei in Merging Galaxies
Sandor Van Wassenhove, Marta Volonteri, Lucio Mayer +3
Supermassive black holes (SMBHs) have been detected in the centers of most nearby massive galaxies. Galaxies today are the products of billions of years of galaxy mergers, but also…
The Effects of Ram-pressure Stripping and Supernova Winds on the Tidal Stirring of Disky Dwarfs: Enhanced Transformation into Dwarf Spheroidals
Stelios Kazantzidis, Lucio Mayer, Simone Callegari +2
A conclusive model for the formation of dwarf spheroidal (dSph) galaxies still remains elusive. Owing to their proximity to the massive spirals Milky Way (MW) and M31, various envi…
Massive black hole seeds born via direct gas collapse in galaxy mergers: their properties, statistics and environment
Silvia Bonoli, Lucio Mayer, Simone Callegari
We study the statistics and cosmic evolution of massive black hole seeds formed during major mergers of gas-rich late-type galaxies. Generalizing the results of the hydro-simulatio…
Structural color tuning in 1D photonic crystals with electric field and magnetic field
Eduardo Aluicio-Sarduy, Simone Callegari, Diana Gisell Figueroa del Valle +3
A tuning of the light transmission properties of 1D photonic structures employing an external stimulus is very attracting and opens the way to the fabrication of optical switches f…
Inside Out and Upside Down: Tracing the Assembly of a Simulated Disk Galaxy Using Mono-Age Stellar Populations
Jonathan C. Bird, Stelios Kazantzidis, David H. Weinberg +4
We analyze the present-day structure and assembly history of a high resolution hydrodynamic simulation of the formation of a Milky Way (MW)-like disk galaxy, from the "Eris" simula…
Direct Formation of Supermassive Black Holes via Multi-Scale Gas Inflows in Galaxy Mergers
Lucio Mayer, Stelios Kazantzidis, Andres Escala +1
Observations of distant bright quasars suggest that billion solar mass supermassive black holes (SMBHs) were already in place less than a billion years after the Big Bang. Models i…