103 citations · 207 across the 24 of their papers we have counts for
26 papers
Simulating tidal disruption events in nuclear star clusters
Philip Cho, Kai Wu, Francesco Flammini Dotti +5
Context. Nuclear star clusters (NSCs) and supermassive black holes (SMBHs) often coexist at the centers of galaxies, engaging in complex dynamical interactions that influence SMBH…
Primordial Binary Stars, Mass segregation and Fractality Effects on the Early Evolution of Young Open Clusters
Vahid Amiri, Francesco Flammini Dotti, Xiaoying Pang +4
We want to understand how the combined effect of initial substructure, primordial mass segregation, and primordial binaries affects the dynamical evolution of the cluster, and whic…
Direct N-body simulations of rotating and extremely massive Population III star clusters
Kai Wu, Ataru Tanikawa, Francesco Flammini Dotti +6
Aims. We present eight direct N-body simulations with NBODY6++GPU of extremely massive, initially rotating Population III star clusters with 1.01 x 10^5 stars. Methods. Our models…
Massive star clusters detected by JWST as natural birth places to form intermediate-mass black holes
Dominik R. G. Schleicher, Matías Liempi, Mirek Giersz +11
The James Webb Space Telescope (JWST) has detected, through gravitational lensing, several young massive star clusters (YMCs), which are considered as relevant building blocks of h…
Pulsars and Millisecond Pulsars III: Tracing Compact Object Dynamics in Globular Clusters with NBODY6++GPU
M. Rah, R. Spurzem, F. Flammini Dotti +1
Neutron stars in globular clusters follow complex evolutionary pathways shaped by binary interactions, mass transfer, and dynamical exchanges. Direct N-body simulations such as NBO…
Modeling Tidal Disruption Events and Compact Object Plunges in Nuclear Star Clusters
Philip Cho, Kai Wu, Francesco Flammini Dotti +2
We study tidal disruption events (TDEs) and compact object inspirals in nuclear star clusters (NSCs) hosting a central supermassive black hole (SMBH), focusing on their role in SMB…
Pulsars and Millisecond Pulsars II: Deep diving into the Evolutionary Mechanisms
Maria Rah, Rainer Spurzem, Francesco Flammini Dotti +1
This second paper in our series investigates the evolutionary mechanisms that shape pulsars and millisecond pulsars (MSPs) across different astrophysical environments. We focus on…
Pulsars and Millisecond Pulsars I: Advancements, Open Questions and finding Gaps via statistical insights
Maria Rah, Areg Mickaelian, Francesco Flammini Dotti +1
We present a statistical study of pulsars and millisecond pulsars (MSPs) based on multiwavelength observations in the Galactic Field and Globular Clusters. We examine their emissio…
Is the overconcentration of pristine populations in Galactic globular clusters real? An N-body approach to the problem
P. Berczik, O. Sobodar, F. Flammini Dotti +5
Recent observations indicate that in some Milky Way globular clusters (GCs) pristine red giant branch (RGB) stars appear more centrally concentrated than enriched ones. This contra…
The long-term evolution of Ultra Faint Dwarf Galaxies and observational implications
Francesco Flammini Dotti, Roberto Capuzzo-Dolcetta, Giovanni Carraro +2
Context. In the Local Group, dwarf spheroidal galaxies (dSphs) and ultra-faint dwarf galaxies (UFDs) exhibit large velocity dispersions. These values are generally attributed to th…
Dynamical evolution of massless particles in star clusters with NBODY6++GPU-MASSLESS: II. The long-term evolution of free-floating comets
Francesco Flammini Dotti, M. B. N. Kouwenhoven, Kai Wu +5
Context. Comets, asteroids, planetesimals, free-floating planets and brown dwarfs, are continuously injected into the intra-cluster environment after expulsion from their host plan…
Modelling Millisecond Pulsar Populations in Globular Clusters with NBODY6++GPU
Yuzhe Song, Debatri Chattopadhyay, Jarrod Hurley +3
Millisecond pulsars (MSPs) are neutron stars with spin periods as short as a few milliseconds, formed through mass accretion from companion stars. In the dense environments of glob…
DRAGON-III simulation: modelling million-body globular and nuclear star clusters
Kai Wu, Philip Cho, Rainer Spurzem +3
As a continuation of DRAGON-II, we present the DRAGON-III project, which focuses on the simulations of million-body globular clusters and nuclear clusters over 10 Gyr. We report on…
Efficient black hole seed formation in low metallicity and dense stellar clusters with implications for JWST sources
M. C. Vergara, A. Askar, F. Flammini Dotti +7
Recent observations with the James Webb Space Telescope (JWST) reveal young massive clusters (YMCs) as key building blocks of early galaxies. They are not only important constituen…
Rapid formation of a very massive star >50000 and subsequently an IMBH from runaway collisions. Direct N-body and Monte Carlo simulations of dense star clusters
Marcelo C. Vergara, Abbas Askar, Albrecht W. H. Kamlah +15
Context. We present simulations of a massive young star cluster using \textsc{Nbody6++GPU} and \textsc{MOCCA}. The cluster is initially more compact than previously published model…
Dynamical evolution of massless particles in star clusters with NBODY6++GPU-MASSLESS: I. Free-floating MLPs
Francesco Flammini Dotti, M. B. N. Kouwenhoven, Peter Berczik +2
Context. Low-mass bodies, such as comets, asteroids, planetesimals, and free-floating planets, are continuously injected into the intra-cluster environment after expulsion from the…
Influence of planets on debris discs in star clusters -- II. The impact of stellar density
Kai Wu, M. B. N. Kouwenhoven, Francesco Flammini Dotti +1
We present numerical simulations of planetary systems in star clusters with different initial stellar densities, to investigate the impact of the density on debris disc dynamics. W…
Efficiency of black hole formation via collisions in stellar systems: An analysis of data from simulations and observations
M. C. Vergara, D. R. G. Schleicher, A. Escala +7
This paper explores the theoretical relation between star clusters and black holes within, focusing on the potential role of nuclear star clusters (NSCs), globular clusters (GCs),…
Hot Jupiter Formation in Dense Star Clusters
Leonard Benkendorff, Francesco Flammini Dotti, Katja Stock +2
Hot Jupiters (HJ) are defined as Jupiter-mass exoplanets orbiting around their host star with an orbital period < 10 days. It is assumed that HJ do not form in-situ but ex-situ. Re…
The dynamical evolution of protoplanetary disks and planets in dense star clusters
Francesco Flammini Dotti, Roberto Capuzzo-Dolcetta, M. B. N. Kouwenhoven
Most stars are born in dense stellar environments where the formation and early evolution of planetary systems may be significantly perturbed by encounters with neighbouring stars.…
3-D selection of 167 sub-stellar companions to nearby stars
Fabo Feng, R. Paul Butler, Steven S. Vogt +20
We analyze 5108 AFGKM stars with at least five high precision radial velocity points as well as Gaia and Hipparcos astrometric data utilizing a novel pipeline developed in previous…
The impact of stellar evolution on rotating star clusters: the gravothermal-gravogyro catastrophe and the formation of a bar of black holes
A. W. H. Kamlah, R. Spurzem, P. Berczik +7
We present results from a suite of eight direct N-body simulations, performed with \textsc{Nbody6++GPU}, representing realistic models of rotating star clusters with up to $1.1\tim…
A highly mutually-inclined, compact warm-Jupiter system KOI-984 ?
Leilei Sun, Panagiotis Ioannidis, Shenghong Gu +6
The discovery of a population of close-orbiting giant planets ( 1 au) has raised a number of questions about their origins and dynamical histories. These issues have still not…
The long-term evolution of main-sequence binaries in DRAGON simulations
Qi Shu, Xiaoying Pang, Francesco Flammini Dotti +3
We present a comprehensive investigation of main-sequence (MS) binaries in the DRAGON simulations, which are the first one-million particles direct -body simulations of globular…