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The unexpectedly large radii of transiting hot Jupiters have led to many proposals for the physical mechanisms responsible for heating their interiors. While it has been shown that hot Jupiters reinflate as their host stars brighten due to…

地球与行星天体物理 · 物理学 2026-03-03 Stephen P. Schmidt , Daniel P. Thorngren , Kevin C. Schlaufman

We present a comprehensive evolutionary model of the Sun's protoplanetary disk, constructed to resolve the "CAI Storage" problem of meteoritics. We predict the abundances of calcium-rich, aluminum-rich inclusions (CAIs) and refractory…

地球与行星天体物理 · 物理学 2018-10-10 Steven J. Desch , Anusha Kalyaan , Conel M. O'D. Alexander

We investigate the chemical composition of the solar system's giant planets atmospheres using a physical formation model with chemistry. The model incorporate disk evolution, pebbles and gas accretion, type I and II migration, simplified…

地球与行星天体物理 · 物理学 2016-12-07 Mohamad Ali-Dib

The core accretion theory for giant planet formation predicts enrichment of elemental abundances in planetary envelopes caused by runaway accretion of planetesimals, which is consistent with measured super-solar abundances of C, N, P, S,…

地球与行星天体物理 · 物理学 2015-06-22 Nikku Madhusudhan , Nicolas Crouzet , Peter R. McCullough , Drake Deming , Christina Hedges

This paper presents a consistent description of the formation and the subsequent evolution of gaseous planets, with special attention to short-period, low-mass hot-Neptune planets characteristic of $\mu$ Ara-like systems. We show that core…

天体物理学 · 物理学 2009-11-11 I. Baraffe , Y. Alibert , G. Chabrier , W. Benz

The growth of Jovian mass planets during migration in their protoplanetary disks is one of the most important problems that needs to be solved in light of observations of the exosolar planets. Studies of the migration of planets in standard…

天体物理学 · 物理学 2011-02-11 Soko Matsumura , Ralph E. Pudritz , Edward W. Thommes

The thermal evolution and interior structure of giant exoplanets are sensitive to the treatment of radiative opacity. At temperatures of ~2000 K, depletion of alkali metals can create a window of reduced opacity, potentially giving rise to…

地球与行星天体物理 · 物理学 2026-03-27 Simon Müller , Ravit Helled

We examine the comparative thermal evolution of Jupiter and Saturn applying recent theoretical results for helium's immiscibility in fluid metallic hydrogen. The redistribution of helium in their interiors proceeds very differently for the…

地球与行星天体物理 · 物理学 2020-02-05 Christopher R. Mankovich , Jonathan J. Fortney

The orbital distribution of trans-Neptunian objects provides strong evidence for the radial migration of Neptune. The outer planets' orbits are thought to have become unstable during the early stages with Jupiter having scattering…

地球与行星天体物理 · 物理学 2018-09-12 David Nesvorny , David Vokrouhlicky , William F. Bottke , Harold F. Levison

The accretion of icy and rocky solids during the formation of a gas giant planet is poorly constrained and challenging to model. Refractory species, like sulfur, are only present in solids in the protoplanetary disk where planets form.…

Radiometric dating indicates that Mars accreted in the first ~4 Myr of solar system formation, which coincides with the formation and possible migration of Jupiter. While nebular gas from the protoplanetary disk was still present, Jupiter…

地球与行星天体物理 · 物理学 2019-04-10 R. Brasser , N. Dauphas , S. J. Mojzsis

A new mechanism is proposed to account for the formation of retrograde hot Jupiter in coplanar star-planet system via close encounter between a Jupiter mass planet and a brown dwarf mass planet. After long timescale scattering between…

地球与行星天体物理 · 物理学 2024-10-23 Wenshuai Liu

Several short-period Jupiter-mass planets have been discovered around nearby solar-type stars. During the circularization of their orbits, the dissipation of tidal disturbance by their host stars heats the interior and inflates the sizes of…

天体物理学 · 物理学 2009-11-10 Pin-Gao Gu , Peter H. Bodenheimer , Douglas N. C. Lin

Deciphering the role of clouds is central to our understanding of exoplanet atmospheres, as they have a direct impact on the temperature and pressure structure, and observational properties of the planet. Super-hot Jupiters occupy a…

We investigate the origin of the measured over-abundance of alkali metals in the atmospheres of hot gas giants, relative to both their host stars and their atmospheric water abundances. We show that formation exterior to the water snow line…

地球与行星天体物理 · 物理学 2021-10-27 Tom Hands , Ravit Helled

The formation of planetary cores must proceed rapidly in order for the giant planets to accrete their gaseous envelopes before the dissipation of the protoplanetary gas disc (<3 Myr). In orbits beyond 10 AU, direct accumulation of…

地球与行星天体物理 · 物理学 2016-04-05 Michiel Lambrechts , Anders Johansen

Kepler's observation shows that many of the detected planets are super-Earths. They are inside a range of critical masses overlapping the core masses (2-20 $M_{\bigoplus}$), which would trigger the runaway accretion and develop the gas…

地球与行星天体物理 · 物理学 2021-12-08 Wei Zhong , Cong Yu

Ultra-hot Jupiters are the most highly irradiated gas giant planets, with equilibrium temperatures from 2000 to over 4000 K. Ultra-hot Jupiters are amenable to characterization due to their high temperatures, inflated radii, and short…

地球与行星天体物理 · 物理学 2019-05-15 Joshua D. Lothringer , Travis S. Barman

Jupiter's magnetic field is generated by the convection of liquid metallic hydrogen in its interior. The transition from molecular hydrogen to metallic hydrogen as temperature and pressure increase is believed to be a smooth one. As a…

地球与行星天体物理 · 物理学 2019-12-20 Yue-Kin Tsang , Chris A. Jones

Gas giants orbiting their host star within the ice line are thought to have migrated to their current locations from farther out. Here we consider the origin and dynamical evolution of observed Jupiters, focusing on hot and warm Jupiters…

地球与行星天体物理 · 物理学 2016-12-07 Fabio Antonini , Adrian S. Hamers , Yoram Lithwick
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