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Derived from first physical principles, a few simple rules are presented that can help in both the planning and interpretation of CCD and IR-array camera observations of resolvable stellar populations. These rules concern the overall size…

Astrophysics · Physics 2010-10-28 Alvio Renzini

We perform binary population synthesis calculations to investigate the incidence of low-mass X-ray binaries and their birth rate in the Galaxy. We use a binary evolution algorithm that models all the relevant processes including tidal…

Astrophysics · Physics 2009-11-11 Paul D. Kiel , Jarrod R. Hurley

(abridged) This thesis presents theoretical and statistical techniques broadly related to systems of dynamically-interacting particles composed of several different types of populations. They are applied to observations of dense star…

Solar and Stellar Astrophysics · Physics 2011-08-04 Nathan Leigh

Observations of binary black hole (BBH) mergers provide a unique window into the lives of massive stars across cosmic time. Connecting redshift-dependent merger properties to massive star progenitors requires accurate models of cosmic star…

High Energy Astrophysical Phenomena · Physics 2026-01-29 Sasha Levina , Floor Broekgaarden , Lieke van Son , Emanuele Berti , Amedeo Romagnolo , Ruediger Pakmor , Ana Lam

Simulating a survey of fluxes and redshifts (distances) from an astrophysical population is a routine task. \texttt{popsynth} provides a generic, object-oriented framework to produce synthetic surveys from various distributions and…

Instrumentation and Methods for Astrophysics · Physics 2021-07-20 J. Michael Burgess , Francesca Capel

We report here on two complementary population synthesis studies which relate directly to the formation and evolution of neutron star binaries in globular clusters. In the first, we compute the probability of retaining neutron stars in…

Astrophysics · Physics 2007-05-23 Saul Rappaport , Eric Pfahl , Fred Rasio , Philipp Podsiadlowski

Binaries that contain a hot subdwarf (sdB) star and a main sequence companion may have interacted in the past. This binary population has historically helped determine our understanding of binary stellar evolution. We have computed a grid…

Solar and Stellar Astrophysics · Physics 2015-06-03 Drew Clausen , Richard A Wade , Ravi kumar Kopparapu , Richard O'Shaughnessy

Population inference in gravitational-wave astronomy allows us to connect individual detections to the astrophysics of compact objects and their environments. Current approaches employed for population inference with LIGO-Virgo-KAGRA data…

Instrumentation and Methods for Astrophysics · Physics 2026-04-07 Alexander W. Criswell , Sharan Banagiri , Vera Delfavero , Maria Jose Bustamante-Rosell , Stephen R. Taylor , Robert Rosati

This thesis work represents the first efforts to combine population synthesis studies of the Galactic isolated neutron stars with deep-learning techniques with the aim of better understanding neutron-star birth properties and evolution. In…

High Energy Astrophysical Phenomena · Physics 2024-04-25 Michele Ronchi

The cornerstone mission of the European Space Agency, Gaia, has revealed properties of 260 000 white dwarfs in the Galaxy, allowing us for the first time to constrain the evolution of white dwarfs with a large sample. Complementary surveys…

Solar and Stellar Astrophysics · Physics 2020-10-12 Nadège Lagarde , Céline Reylé

We performed populations synthesis calculations of single stars and binaries and show that binary evolution is extremely important for Galactic astronomy. We review several binary evolution models and conclude that they give quite different…

Astrophysics · Physics 2007-05-23 S. F. Portegies Zwart , L. R. Yungelson , G. Nelemans

Using neural networks, we integrate the ability to account for Doppler smearing due to a pulsar's orbital motion with the pulsar population synthesis package \psrpoppy\ to develop accurate modeling of the observed binary pulsar population.…

High Energy Astrophysical Phenomena · Physics 2021-05-12 Nihan Pol , Maura McLaughlin , Duncan R. Lorimer , Nathan Garver-Daniels

Aims. We present here a new theoretical approach to population synthesis. The aim is to predict colour magnitude diagrams (CMDs) for huge numbers of stars. With this method we generate synthetic CMDs for N-body simulations of galaxies.…

Solar and Stellar Astrophysics · Physics 2015-06-05 S. Pasetto , C. Chiosi , D. Kawata

Synthetic population generation is the process of combining multiple socioeconomic and demographic datasets from different sources and/or granularity levels, and downscaling them to an individual level. Although it is a fundamental step for…

Machine Learning · Computer Science 2019-11-12 Colin Wan , Zheng Li , Alicia Guo , Yue Zhao

Binary populations in young star clusters show multiplicity fractions both lower and up to twice as high as those observed in the Galactic field. We follow the evolution of a population of binary stars in dense and loose star clusters…

Astrophysics of Galaxies · Physics 2015-06-05 Michael Marks , Pavel Kroupa

Galactic white dwarf binaries (WDBs) and black hole binaries (BHBs) will be gravitational wave (GW) sources for LISA. Their detection will provide insights into binary evolution and the evolution of our Galaxy through cosmic history. Here,…

Astrophysics of Galaxies · Physics 2024-10-24 Petra Tang , Jan Eldridge , Renate Meyer , Astrid Lamberts , Guillaume Boileau , Wouter van Zeist

Small planets ($R_{p} \leq 4 R_{\oplus}$) are divided into rocky super-Earths and gaseous sub-Neptunes separated by a radius gap, but the mechanisms that produce these distinct planet populations remain unclear. Binary stars are the only…

Population synthesis involves generating synthetic yet realistic representations of a target population of micro-agents for behavioral modeling and simulation. Traditional methods, often reliant on target population samples, such as census…

BONNFIRES, a new generation of population synthesis code, can calculate nuclear reaction, various mixing processes and binary interaction in a timely fashion. We use this new population synthesis code to study the interplay between binary…

Solar and Stellar Astrophysics · Physics 2014-03-05 Herbert H. B. Lau , Robert G. Izzard , Fabian R. N. Schneider

I present StarEstate, an open-source Python package for producing rapid, statistically robust galactic population synthesis models. By utilizing optimized pre-calculated inverse-cumulative distribution function samplers, the tool generates…

Instrumentation and Methods for Astrophysics · Physics 2025-11-27 Amedeo Romagnolo