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The spin axis of a rotationally deformed planet is forced to precess about its orbital angular momentum vector, due to the tidal gravity of its host star, if these directions are misaligned. This induces internal fluid motions inside the…

Earth and Planetary Astrophysics · Physics 2016-07-27 Adrian J. Barker

Internal gravity waves propagate in stellar radiative zones and transport angular momentum throughout the evolution of stars, shaping the internal rotation pro le of these regions. We use the analytical study of Andre\'e et al. (2018) to…

Solar and Stellar Astrophysics · Physics 2019-01-23 Q. André , S. Mathis , L. Amard

Nuclear stellar clusters are common in the center of galaxies. We consider the possibility that their progenitors assumed to be globular clusters may have formed elsewhere, migrated to and assembled near their present location. The main…

Astrophysics of Galaxies · Physics 2020-12-09 P. B. Ivanov , D. N. C. Lin

We analyze the physical properties of stellar clusters that are detected in massive star-forming regions in the MYStIX project--a comparative, multiwavelength study of young stellar clusters within 3.6 kpc that contain at least one O-type…

Over the last two decades, a large population of close-in planets has been detected around a wide variety of host stars. Such exoplanets are likely to undergo planetary migration through magnetic and tidal interactions. We aim to follow the…

Earth and Planetary Astrophysics · Physics 2021-06-23 Jérémy Ahuir , Antoine Strugarek , Allan-Sacha Brun , Stéphane Mathis

More and more observations indicate that young star clusters could retain imprints of their formation process. In particular, the degree of substructuring and rotation are possibly the direct result of the collapse of the parent molecular…

Astrophysics of Galaxies · Physics 2020-06-17 Alessandro Ballone , Michela Mapelli , Ugo N. Di Carlo , Stefano Torniamenti , Mario Spera , Sara Rastello

The evolution of tidally truncated globular clusters is investigated by integrating two-dimensional Fokker-Planck equation that allows the development of velocity anisotropy. We start from the isotropic Plummer model with tidal cut off and…

Astrophysics · Physics 2015-06-24 K. Takahashi , H. M. Lee , S. Inagaki

In previous papers of this series, we developed a new algorithm for modeling the formation of star clusters in galaxy formation simulations. Here we investigate how dissolution of bound star clusters affects the shape of the cluster mass…

Astrophysics of Galaxies · Physics 2019-05-21 Hui Li , Oleg Y. Gnedin

We discuss evidence in local, present-day clusters of galaxies (from the ENACS survey) about the way in which those clusters have evolved and about the evolutionary relationships between the galaxies of different morphological types in…

Astrophysics · Physics 2009-11-10 Andrea Biviano , Peter Katgert

Grid-based hydrodynamics simulations of circumstellar disks are often performed in the curvilinear coordinate system, in which the center of the computational domain coincides with the motionless star. However, the center of mass may be…

Solar and Stellar Astrophysics · Physics 2017-04-26 Zs. Regaly , E. Vorobyov

The mass evaporation rate of globular clusters evolving in a strong Galactic tidal field is derived through the analysis of large, multi-mass $N$-body simulations. For comparison, we also study the same evaporation rates using MOCCA Monte…

Astrophysics of Galaxies · Physics 2017-07-19 Juan P. Madrid , Nathan W. C. Leigh , Jarrod R. Hurley , Mirek Giersz

We investigate the internal dynamics of anisotropic, rotating globular clusters with a multimass stellar population by performing new direct N-body simulations. In addition to the well-known radial mass segregation effect, where heavy stars…

Astrophysics of Galaxies · Physics 2019-12-18 Ákos Szölgyén , Yohai Meiron , Bence Kocsis

The tidal tails of stellar clusters provide an important tool for studying the birth conditions of the clusters and their evolution, coupling, and interaction with the Galactic potential. We present the N-body evolution of a Hyades-like…

Astrophysics of Galaxies · Physics 2021-03-24 Tereza Jerabkova , Henri M. J. Boffin , Giacomo Beccari , Guido de Marchi , Jos H. J. de Bruijne , Timo Prusti

[Abridged] Most exoplanets detected so far are close-in planets, which are likely to be affected by tidal dissipation in their host star. To get a complete picture of the evolution of star-planet systems one needs to consider the impact of…

Solar and Stellar Astrophysics · Physics 2021-07-07 J. Ahuir , S. Mathis , L. Amard

Runaway stellar collisions in dense star clusters are invoked to explain the presence of very massive stars or blue stragglers in the center of those systems. This process has also been explored for the first star clusters in the Universe…

Astrophysics of Galaxies · Physics 2020-07-15 B. Reinoso , D. R. G. Schleicher , M. Fellhauer , N. W. C. Leigh , R. S. Klessen

Most planetary systems -- including our own -- are born within stellar clusters, where interactions with neighboring stars can help shape the system architecture. This paper develops an orbit-averaged formalism to characterize the cluster's…

Earth and Planetary Astrophysics · Physics 2020-05-20 Konstantin Batygin , Fred C. Adams , Yuri K. Batygin , Erik A. Petigura

The understanding of the rotational evolution of early-type stars is deeply related to that of anisotropic mass and angular momentum loss. In this paper, we aim to clarify the rotational evolution of rapidly rotating early-type stars along…

Solar and Stellar Astrophysics · Physics 2019-05-22 D. Gagnier , M. Rieutord , C. Charbonnel , B. Putigny , F. Espinosa Lara

Tidal friction is thought to be important in determining the long-term spin-orbit evolution of short-period extrasolar planetary systems. Using a simple model of the orbit-averaged effects of tidal friction, we study the evolution of…

Earth and Planetary Astrophysics · Physics 2009-04-27 A. J. Barker , G. I. Ogilvie

Turbulent friction in convective regions in stars and planets is one of the key physical mechanisms that drive the dissipation of the kinetic energy of tidal flows in their interiors and the evolution of their systems. This friction acts…

Solar and Stellar Astrophysics · Physics 2016-07-20 Stéphane Mathis , Pierre Auclair-Desrotour , Mathieu Guenel , Florian Gallet , Christophe Le Poncin-Lafitte

We consider the evolution of a binary system interacting due to tidal effects without restriction on the orientation of the orbital, and where significant, spin angular momenta, and orbital eccentricity. We work in the low tidal forcing…

Solar and Stellar Astrophysics · Physics 2020-11-11 P. B. Ivanov , J. C. B. Papaloizou
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