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Stellar population synthesis can be approached as an inverse problem. The physical information is extracted from the observations through an inverse model. The process requires the transformation of the observational errors into model…

Astrophysics · Physics 2009-10-31 J. Moultaka , D. Pelat

We seek to quantify the fidelity with which modern population syntheses reproduce observations in view of their use as predictive tools. We compared synthetic populations from the Generation 3 Bern Model of Planet Formation and Evolution…

Context. The populations of small bodies of the Solar System (asteroids, comets, Kuiper-Belt objects) are used to constrain the origin and evolution of the Solar System. Both their orbital distribution and composition distribution are…

Earth and Planetary Astrophysics · Physics 2021-08-13 A. V. Sergeyev , B. Carry

Planetary population synthesis is a tool to understand the physics of planetary system formation. It builds on a model that includes a multitude of physical processes. The outcome can be statistically compared with exoplanet observations.…

Earth and Planetary Astrophysics · Physics 2023-03-02 Alexandre Emsenhuber , Christoph Mordasini , Remo Burn

It is now possible to measure detailed spectral indices for stellar populations in spiral disks. We propose to interpret these data using evolutionary synthesis models computed from the Star Formation Histories obtained from chemical…

Astrophysics · Physics 2015-06-24 M. Molla , S. Cantin , C. Robert , A. Pellerin , E. Hardy

The recent discovery of the first confirmed Interstellar Objects (ISOs) passing through the Solar System on clearly hyperbolic objects opens the potential for near term ISO missions, either to the two known objects, or to similar objects…

Instrumentation and Methods for Astrophysics · Physics 2020-07-27 T. Marshall Eubanks , Jean Schneider , Andreas M. Hein , Adam Hibberd , Robert Kennedy

The discovery of two interstellar objects passing through the Solar System, 1I/`Oumuamua and 2I/Borisov, implies that a galactic population exists with a spatial number density of order $\sim0.1$ au$^{-3}$. The forthcoming Rubin Observatory…

Earth and Planetary Astrophysics · Physics 2023-10-27 Dušan Marčeta , Darryl Z. Seligman

We present a novel population-based Bayesian inference approach to model the average and population variance of spatial distribution of a set of observables from ensemble analysis of low signal-to-noise ratio measurements. The method…

Cosmology and Nongalactic Astrophysics · Physics 2020-12-23 Arya Farahi , Daisuke Nagai , Yang Chen

This is the second paper in a series of papers showing the results of extrasolar planet population synthesis calculations. In the companion paper (Paper I), we have presented in detail our methods. By applying an observational detection…

Earth and Planetary Astrophysics · Physics 2015-05-13 Christoph Mordasini , Yann Alibert , Willy Benz , Dominique Naef

The discoveries of two Interstellar Objects (ISOs) in recent years has generated significant interest in constraining their physical properties and the mechanisms behind their formation. However, their ephemeral passages through our Solar…

Earth and Planetary Astrophysics · Physics 2022-08-02 Samuel H. C. Cabot , Gregory Laughlin

The formation and evolution of binary stars is a critical component of several fields in astronomy. The most numerous sources for gravitational wave observatories are inspiraling and/or merging compact binaries, while binary stars are…

We present SynthPop, a new open source, modular population synthesis Galactic modeling software to simulate catalogs of Milky Way stars along any sightline outward from the Sun. Motivated by a lack flexibility in existing Galactic models,…

Instrumentation and Methods for Astrophysics · Physics 2025-04-16 Jonas Klüter , Macy J. Huston , Abigail Aronica , Samson A. Johnson , Matthew Penny , Marz Newman , Farzaneh Zohrabi , Alison L. Crisp , Allison Chevis

Context. The populations of small bodies of the Solar System (asteroids, comets, Kuiper Belt objects) are used to constrain the origin and evolution of the Solar System. Both their orbital distribution and composition distribution are…

Earth and Planetary Astrophysics · Physics 2022-02-09 A. V. Sergeyev , B. Carry , C. A. Onken , H. A. R. Devillepoix , C. Wolf , S. -W. Chang

We investigate dynamical constraints on the population of large interstellar objects (ISOs) by combining encounter rate analysis, Eddington inversion, and Liouville mapping. Encounter rate scaling demonstrates that detections of…

Earth and Planetary Astrophysics · Physics 2025-09-09 Oem Trivedi , Abraham Loeb

Comparison with artificial galaxy models is essential for translating the incomplete and low signal-to-noise data we can obtain on astrophysical stellar populations to physical interpretations which describe their composition, physical…

Astrophysics of Galaxies · Physics 2020-05-06 Elizabeth R. Stanway

We present Artificial Stellar Populations (ArtPop), an open-source Python package for synthesizing stellar populations and generating artificial images of fully populated stellar systems. The code is designed to be intuitive to use and as…

Astrophysics of Galaxies · Physics 2022-12-21 Johnny P. Greco , Shany Danieli

1I/'Oumuamua (or 1I) and 2I/Borisov (or 2I), the first InterStellar Objects (ISOs) discovered passing through the solar system, have opened up entirely new areas of exobody research. Finding additional ISOs and planning missions to…

Millisecond pulsars (MSPs) are the oldest but fastest pulsars known to date. In the 1980s, to explain how these pulsars could be formed, a new hypothesis was formulated: the recycling of pulsars, i.e the fact that a pulsar could accrete…

High Energy Astrophysical Phenomena · Physics 2026-03-16 Mattéo Sautron , Jérôme Pétri , Dipanjan Mitra , Adélie Dupuy--Junet , Marie-Eloïse Pietrin

We extend the models presented in Mordasini et al. (2009) to the formation of planets orbiting stars of different masses. We discuss the properties of the resulting synthetic planet population in terms of mass, orbit, and metallicity…

Earth and Planetary Astrophysics · Physics 2015-05-20 Yann Alibert , Christoph Mordasini , Willy Benz

The upcoming commencement of the Vera C. Rubin Observatory's Legacy Survey of Space of Time (LSST) will greatly enhance the discovery rate of interstellar objects (ISOs). `Oumuamua and Borisov were the first two ISOs confirmed in the Solar…

Earth and Planetary Astrophysics · Physics 2022-12-14 Amir Siraj , Abraham Loeb