Results 61 to 70 of about 1,706 (153)
Frontiers in Astronomy and Space SciencesNumerous numerical studies have been carried out in recent years that simulate different aspects of exoplanets’ magnetosphere and stellar winds. These studies have focused primarily on hot Jupiters with sun-like stars. This study addresses the challenges
Fatemeh Bagheri +3 more
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Excitation of planetary inclinations via dynamical bifurcations driven by misaligned disks
Astronomy & AstrophysicsContext. Primordial misalignments between protoplanetary disks and their host stars’ spin axes have been proposed to be important origins of the widespread stellar obliquities observed in exoplanets. Recent works have further revealed nontrivial and rich
Fu Tao, Wang Yue
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On close-in magnetized star-planet interactions
, 2013 4 pages, 1 figure, sf2a conference ...
Strugarek, A., Brun, A. S., Matt, S.
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Signatures of X-Ray-dominated Chemistry in the Spectra of Exoplanetary Atmospheres
The Planetary Science JournalHigh-energy radiation from stars impacts planetary atmospheres, deeply affecting their chemistry and providing departures from chemical equilibrium. While the upper atmospheric layers are dominated by ionizations induced by extreme-ultraviolet radiation,
Daniele Locci +5 more
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A Robust Launching Mechanism for Free- floating Planets from Host Stars with Close-in Planets
The Astrophysical JournalSecular perturbations from binary stars and distant massive planets can drive cold planets onto nearly parabolic orbits with pericenter passages extremely close to their host stars.
Xiaochen Zheng +4 more
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Star-Planet Interactions in X-rays
, 2010 to be published in Cool Stars 16 ...
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Magnetic star-planet interaction can suppress stellar dynamo
, 2021 I present a model of magnetic interaction between planets on close-in orbits and their host stars. It is based on the solution for a stellar -squared dynamo surrounded by a force-free corona and an outer layer consistent with the presence of a Parker stellar wind. This model was obtained analytically and predicts different scenarios. I illustrate how
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The Astrophysical JournalWe introduce Disk2Planet, a machine-learning-based tool to infer key parameters in disk–planet systems from observed protoplanetary disk structures. Disk2Planet takes as input the disk structures in the form of 2D density and velocity maps, and outputs ...
Shunyuan Mao +5 more
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The Astronomical JournalThe LHS 1610 system consists of a nearby ( d = 9.7 pc) M5 dwarf hosting a candidate brown dwarf companion in a 10.6 days, eccentric ( e ∼ 0.37) orbit.
Evan Fitzmaurice +20 more
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Where does the simplified stellar contamination model fail in exoplanet transmission spectroscopy?
Astronomy & AstrophysicsStellar photospheric heterogeneities (e.g., starspots and faculae) distort the apparent stellar spectrum during a transit and imprint wavelength-dependent biases on the measured planet–to–star radius ratio. This transit light source effect (TLSE) must be
Sumida V. Y. D. +3 more
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