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In most current debris disc models, the dynamical and the collisional evolutions are studied separately, with N-body and statistical codes, respectively, because of stringent computational constraints. We present here LIDT-DD, the first…

Earth and Planetary Astrophysics · Physics 2015-06-17 Quentin Kral , Philippe Thébault , Sébastien Charnoz

Planet--Planet scattering is an efficient and robust dynamical mechanism for producing eccentric exoplanets. Coupled to tidal interactions with the central star, it can also explain close--in giant planets on circularized and potentially…

Earth and Planetary Astrophysics · Physics 2019-05-29 F. Marzari , M. Nagasawa

We introduce swordfish, a Monte-Carlo-free Python package to predict expected exclusion limits, the discovery reach and expected confidence contours for a large class of experiments relevant for particle- and astrophysics. The tool is…

High Energy Physics - Phenomenology · Physics 2017-12-15 Thomas D. P. Edwards , Christoph Weniger

We present an open-source Python package, SpinWaveToolkit (SWT), for (semi-)analytical modeling of spin-wave dynamics in thin ferromagnetic films and exchange-coupled magnetic bilayers. SWT combines analytical models based on the…

Mesoscale and Nanoscale Physics · Physics 2026-02-02 Jan Klíma , Ondřej Wojewoda , Jakub Krčma , Martin Hrtoň , Dominik Pavelka , Jakub Holobrádek , Michal Urbánek

In order to characterize giant exoplanets and better understand their origin, knowledge of how the planet's composition depends on its mass and stellar environment is required. In this work, we simulate the thermal evolution of gaseous…

Earth and Planetary Astrophysics · Physics 2020-11-18 Simon Müller , Maya Ben-Yami , Ravit Helled

High-contrast imaging surveys for exoplanet detection have shown giant planets at large separations to be rare. It is important to push towards detections at smaller separations, the part of the parameter space containing most planets. The…

Earth and Planetary Astrophysics · Physics 2021-03-16 M. Samland , J. Bouwman , D. W. Hogg , W. Brandner , T. Henning , M. Janson

We constrain the planetary atmospheric mass fraction at the time of the dispersal of the protoplanetary disk and the evolution of the stellar rotation rate for a dozen multi-planet systems that host sub-Neptunes and/or super-Earths. We…

Earth and Planetary Astrophysics · Physics 2021-12-22 A. Bonfanti , L. Fossati , D. Kubyshkina , P. E. Cubillos

In order to gain possible hints for planet formation from the current data of known extra-solar planets, the period-ratios and mass-ratios of adjacent planet pairs in multi-planet systems are determined. A moderate period-ratio-mass-ratio…

Earth and Planetary Astrophysics · Physics 2021-05-26 Sridhar Gajendran , Li-Chin Yeh , Ing-Guey Jiang

We explore the origin of the trend of heavy elements in observed massive exoplanets. Coupling of better measurements of mass ($M_p$) and radius of exoplanets with planet structure models enables estimating the total heavy element mass…

Earth and Planetary Astrophysics · Physics 2018-10-10 Yasuhiro Hasegawa , Geoffrey Bryden , Masahiro Ikoma , Gautam Vasisht , Mark Swain

Spin-orbit coupling of planetary systems plays an important role in the dynamics and habitability of planets. However, symplectic integrators that can accurately simulate not only how orbit affects spin but also how spin affects orbit have…

Earth and Planetary Astrophysics · Physics 2021-10-04 Renyi Chen , Gongjie Li , Molei Tao

(Abridged) The chemical composition of planetary atmospheres has long been thought to store information regarding where and when a planet accretes its material. Predicting this chemical composition theoretically is a crucial step in linking…

Earth and Planetary Astrophysics · Physics 2020-10-28 Alex J. Cridland , Ewine F. van Dishoeck , Matthew Alessi , Ralph E. Pudritz

We have updated the PlanetS catalog of transiting planets with precise and robust mass and radius measurements and use this catalog to explore mass-radius (M-R) diagrams. On the one hand, we propose new M-R relationships to separate…

Earth and Planetary Astrophysics · Physics 2024-08-07 Léna Parc , François Bouchy , Julia Venturini , Caroline Dorn , Ravit Helled

Theoretical studies of giant planet formation suggest that substantial quantities of metals - elements heavier than hydrogen and helium - can be delivered by solid accretion during the envelope-assembly phase. This metal enhancement process…

Earth and Planetary Astrophysics · Physics 2024-09-23 Mark R. Swain , Yasuhiro Hasegawa , Daniel P. Thorngren , Gael M. Roudier

Mass and radius are two fundamental properties for characterising exoplanets, but only for a relatively small fraction of exoplanets are they both available. Mass is often derived from radial velocity measurements, while the radius is…

Earth and Planetary Astrophysics · Physics 2019-10-09 S. Ulmer-Moll , N. C. Santos , P. Figueira , J. Brinchmann , J. P. Faria

Plastic deformation of crystalline and amorphous matter often involves intermittent local strain burst events. To understand the physical background of the phenomenon a minimal stochastic mesoscopic model was introduced, where…

Materials Science · Physics 2017-02-15 Péter Dusán Ispánovity , Dániel Tüzes , Péter Szabó , Michael Zaiser , István Groma

This paper continues a series in which we predict the main observable characteristics of exoplanets based on their formation. In Paper I we described our global planet formation and evolution model. In Paper II we studied the planetary…

Earth and Planetary Astrophysics · Physics 2017-12-13 C. Mordasini , G. -D. Marleau , P. Mollière

The recently discovered exoplanets in binary or higher-order multiple stellar systems sparked a new interest in the study of proto-planetary discs in stellar aggregations. Here we focus on disc solids, as they make up the reservoir out of…

Earth and Planetary Astrophysics · Physics 2021-09-08 Francesco Zagaria , Giovanni P. Rosotti , Giuseppe Lodato

Probabilistic relationships between the mass and radius of planets are useful for a variety of purposes, including estimating the yields of planet discovery efforts and the radii of discovered planets given their masses. Previous work on…

Earth and Planetary Astrophysics · Physics 2019-09-23 Daniel P. Thorngren , Mark S. Marley , Jonathan J. Fortney

Correlations between stellar properties and the occurrence rate of exoplanets can be used to inform the target selection of future planet search efforts and provide valuable clues about the planet formation process. We analyze a sample of…

Earth and Planetary Astrophysics · Physics 2015-05-19 John Asher Johnson , Kimberly M. Aller , Andrew W. Howard , Justin R. Crepp

Gas accretion onto the circumplanetary disks and the source region of accreting gas are important to reveal dust accretion that leads to satellite formation around giant planets. We performed local three-dimensional high-resolution…

Earth and Planetary Astrophysics · Physics 2022-08-24 Natsuho Maeda , Keiji Ohtsuki , Takayuki Tanigawa , Masahiro N. Machida , Ryo Suetsugu