142 citations · 791 across the 27 of their papers we have counts for
27 papers
-body modelling of the ED-2 stream progenitor shows Gaia BH3's formation involved dynamical interactions
Daniel Marín Pina, Mark Gieles, Sara Rastello +3
Context. The Gaia collaboration announced the discovery of a binary of a massive black hole (33 M) with a low-mass giant star (Gaia BH3) in the ED-2 stellar stream. The pro…
Hide and Seek with Gaia. Detectability of Predicted Thin-Disc Metal-Rich RR Lyrae Binaries in Gaia DR3 and DR4
Giuliano Iorio, Pranav Nagarajan, Alexey Bobrick +8
RR Lyrae stars (RRLs) are classical tracers of old stellar populations, yet growing evidence suggests the presence of a metal-rich ([Fe/H]>-0.5), intermediate-age (2-7 Gyr) sub-pop…
Teen TITANS simulations -- I. Inefficient intermediate-mass black hole seeding via stellar collisions in young massive clusters
Benedetta Mestichelli, Sara Rastello, Michela Mapelli +2
Young massive clusters (YMCs) provide favorable environments for frequent stellar collisions, potentially leading to the formation of very massive stars (VMSs) and seeds of interme…
BE Lyncis is not a Black Hole Binary: Lessons From Gaia and Hipparcos Astrometry
Pranav Nagarajan, Kareem El-Badry, Thomas J. Maccarone +3
BE Lyncis (BE Lyn) is a well-studied high-amplitude Scuti variable star (HADS). Recently, Niu et al. (2026) analyzed a 39-year baseline of times of maximum light of BE Lyn, rep…
The formation of Gaia BH3
Daniel Marín Pina, Mark Gieles, Sara Rastello +1
The Gaia collaboration announced the discovery of a massive black hole (BH) with a low-mass giant star companion, Gaia BH3, located in the ED-2 stellar stream. The properties of Ga…
Star-Black Hole Interactions in Young Star Clusters
Sara Rastello, Giuliano Iorio, Mark Gieles +1
Close encounters between stars and black holes can trigger micro-tidal disruption events (micro-TDEs) in dense young star clusters (YSCs). Using direct N-body simulations with PETA…
Micro-Tidal Disruption Events in Young Star Clusters
Sara Rastello, Giuliano Iorio, Mark Gieles +1
Dense young star clusters (YSCs) are ideal environments for dynamical interactions between stars and stellar mass black holes (BHs). In such dense environments, stars can undergo c…
The boring history of Gaia BH3 from isolated binary evolution
Giuliano Iorio, Stefano Torniamenti, Michela Mapelli +15
Gaia BH3 is the first observed dormant black hole (BH) with a mass of M and represents the first confirmation that such massive BHs are associated with metal-…
Dynamical formation of Gaia BH3 in the progenitor globular cluster of the ED-2 stream
Daniel Marín Pina, Sara Rastello, Mark Gieles +3
Context. The star-black hole (S-BH) binary known as Gaia BH3, discovered by the Gaia Collaboration is chemically and kinematically associated with the metal-poor ED-2 stream in the…
Dynamical formation of BH1 in a young star cluster
Sara Rastello, Giuliano Iorio, Michela Mapelli +5
BH1, the first quiescent black hole (BH) detected from data, poses a challenge to most binary evolution models: its current mass ratio is , and its orbi…
The Dragon-II simulations -- I. Evolution of single and binary compact objects in star clusters with up to 1 million stars
Manuel Arca Sedda, Albrecht W. H. Kamlah, Rainer Spurzem +7
We present the first results of the \textsc{Dragon-II} simulations, a suite of 19 -body simulations of star clusters with up to stars, with up to of them initially…
Dynamics of binary black holes in young star clusters: the impact of cluster mass and long-term evolution
Stefano Torniamenti, Sara Rastello, Michela Mapelli +3
Dynamical interactions in dense star clusters are considered one of the most effective formation channels of binary black holes (BBHs). Here, we present direct body simulations…
Gravitational background from dynamical binaries and detectability with 2G detectors
Carole Périgois, Filippo Santoliquido, Yann Bouffanais +5
We study the impact of young clusters on the gravitational wave background from compact binary coalescence. We simulate a catalog of sources from population I/II isolated binary st…
Compact Object Mergers in Hierarchical Triples from Low-Mass Young Star Clusters
Alessandro Alberto Trani, Sara Rastello, Ugo N. Di Carlo +3
A binary star orbited by an outer companion constitutes a hierarchical triple system. The outer body may excite the eccentricity of the inner binary through the von~Zeipel-Lidov-Ko…
Dynamics of binary black holes in low-mass young star clusters
Sara Rastello, Michela Mapelli, Ugo N. di Carlo +5
Young star clusters are dynamically active stellar systems and are a common birthplace for massive stars. Low-mass star clusters ( M) are more numerous than…
Intermediate mass black holes from stellar mergers in young star clusters
Ugo N. Di Carlo, Michela Mapelli, Mario Pasquato +8
Intermediate mass black holes (IMBHs) in the mass range bridge the gap between stellar black holes (BHs) and supermassive BHs. Here, we investigate…
GW190521 formation via three-body encounters in young massive star clusters
Marco Dall'Amico, Michela Mapelli, Ugo N. Di Carlo +5
GW190521 is the most massive binary black hole (BBH) merger observed to date, and its primary component lies in the pair-instability (PI) mass gap. Here, we investigate the formati…
The impact of binaries on the evolution of star clusters from turbulent molecular clouds
Stefano Torniamenti, Alessandro Ballone, Michela Mapelli +5
Most of massive stars form in binary or higher-order systems in clumpy, sub-structured clusters. In the very first phases of their life, these stars are expected to interact with t…
New insights on binary black hole formation channels after GWTC-2: young star clusters versus isolated binaries
Yann Bouffanais, Michela Mapelli, Filippo Santoliquido +5
With the recent release of the second gravitational-wave transient catalogue (GWTC-2), which introduced dozens of new detections, we are at a turning point of gravitational wave as…
From hydrodynamics to N-body simulations of star clusters: mergers and rotation
Alessandro Ballone, Stefano Torniamenti, Michela Mapelli +5
We present a new method to obtain more realistic initial conditions for N-body simulations of young star clusters. We start from the outputs of hydrodynamical simulations of molecu…
Effect of binarity in star cluster dynamical mass determination
Sara Rastello, Giovanni Carraro, Roberto Capuzzo-Dolcetta
In this paper we explore the effects that the presence of a fraction of binary stars has in the determination of a star cluster mass via the virial theorem. To reach this aim in an…
The cosmic merger rate density evolution of compact binaries formed in young star clusters and in isolated binaries
Filippo Santoliquido, Michela Mapelli, Yann Bouffanais +5
Next generation ground-based gravitational-wave detectors will observe binary black hole (BBH) mergers up to redshift , probing the evolution of compact binary (CB) m…
Binary black holes in young star clusters: the impact of metallicity
Ugo N. Di Carlo, Michela Mapelli, Nicola Giacobbo +9
Young star clusters are the most common birth-place of massive stars and are dynamically active environments. Here, we study the formation of black holes (BHs) and binary black hol…
Dynamics of black hole - neutron star binaries in young star clusters
Sara Rastello, Michela Mapelli, Ugo N. Di Carlo +5
Young star clusters are likely the most common birthplace of massive stars across cosmic time and influence the formation of compact binaries in several ways. Here, we simulate the…