296 citations · 4.9k across the 120 of their papers we have counts for
15 papers · 1 filter
Formation of supermassive black hole seeds in nuclear star clusters via gas accretion and runaway collisions
Arpan Das, Dominik R. G. Schleicher, Nathan W. C. Leigh +1
More than two hundred supermassive black holes (SMBHs) of masses have been discovered at . One promising pathway for the formation o…
A phylogenetic analysis of galaxies in the Coma Cluster and the field: a new approach to galaxy evolution
M. Martínez-Marín, R. Demarco, G. Cabrera-Vives +3
We propose a phylogenetic approach (PA) as a novel and robust tool to detect galaxy populations (GPs) based on their chemical composition. The branches of the tree are interpreted…
Hot Jupiter and ultra-cold Saturn formation in dense star clusters
Yi-Han Wang, Nathan W. C. Leigh, Rosalba Perna +1
The discovery of high incidence of hot Jupiters in dense clusters challenges the field-based hot Jupiter formation theory. In dense clusters, interactions between planetary systems…
Small-N Collisional Dynamics V: Beyond the Realm of Not-So-Small-N
Carlos Barrera, Nathan W. C. Leigh, Bastián Reinoso +2
Direct collisions between finite-sized particles occur commonly in many areas of astrophysics. Such collisions are typically mediated by chaotic, bound gravitational interactions i…
Massive Stellar Triples Leading to Sequential Binary Black-Hole Mergers in the Field
Alejandro Vigna-Gómez, Silvia Toonen, Enrico Ramirez-Ruiz +3
Stellar triples with massive stellar components are common, and can lead to sequential binary black-hole mergers. Here, we outline the evolution towards these sequential mergers, a…
Filament rotation in the California L1482 cloud
Rodrigo H. Álvarez-Gutiérrez, Amelia M. Stutz, Chi Y. Law +5
We analyze the gas mass distribution, the gas kinematics, and the young stellar object (YSO) content of the California Molecular Cloud (CMC) L1482 filament. We derive a Gaia DR2 YS…
AGN as Potential Factories for Eccentric Black Hole Mergers
J. Samsing, I. Bartos, D. J. D'Orazio +6
There is some weak evidence that the black hole merger named GW190521 had a non-zero eccentricity. In addition, the component black holes' masses exceeded the limit predicted by st…
Evolution of Retrograde Orbiters in an AGN Disk
Amy Secunda, Betsy Hernandez, Jeremy Goodman +4
AGN disks have been proposed as promising locations for the mergers of stellar mass black hole binaries (BBHs). Much recent work has been done on this merger channel, but the major…
Mergers of Equal-Mass Binaries with Compact Object Companions from Mass Transfer in Triple Star Systems
N. W. C. Leigh, S. Toonen, S. F. Portegies Zwart +1
In this paper, we consider triple systems composed of main-sequence (MS) stars, and their internal evolution due to stellar and binary evolution. Our focus is on triples that produ…
Orbital Migration of Interacting Stellar Mass Black Holes in Disks around Supermassive Black Holes II. Spins and Incoming Objects
Amy Secunda, Jillian Bellovary, Mordecai-Mark Mac Low +6
The masses, rates, and spins of merging stellar-mass binary black holes (BBHs) detected by aLIGO and Virgo provide challenges to traditional BBH formation and merger scenarios. An…
Chaos and Lévy Flights in the Three-Body Problem
Viraj Manwadkar, Alessandro A. Trani, Nathan W. C. Leigh
We study chaos and Lévy flights in the general gravitational three-body problem. We introduce new metrics to characterize the time evolution and final lifetime distributions, namel…
Giant planet swaps during close stellar encounters
Yi-Han Wang, Rosalba Perna, Nathan W. C. Leigh
The discovery of planetary systems outside of the solar system has challenged some of the tenets of planetary formation. Among the difficult-to-explain observations, are systems wi…
Planetary Architectures in Interacting Stellar Environments
Yi-Han Wang, Rosalba Perna, Nathan W. C. Leigh
The discovery of Exoplanetary Systems has challenged some of the theories of planet formation, which assume unperturbed evolution of the host star and its planets. However, in star…
On the eccentricity evolution of massive black hole binaries in stellar backgrounds
Matteo Bonetti, Alexander Rasskazov, Alberto Sesana +6
We study the dynamical evolution of eccentric massive black hole binaries (MBHBs) interacting with unbound stars by means of an extensive set of three body scattering experiments.…
The X-ray Emissivity of Low-Density Stellar Populations
C. O. Heinke, M. G. Ivanov, E. W. Koch +17
The dynamical production of low-mass X-ray binaries and brighter cataclysmic variables (CVs) in dense globular clusters is well-established. We investigate how the X-ray emissivity…