Results 21 to 30 of about 1,706 (153)
AIP Conference Proceedings, 2009 Much effort has been invested in recent years, both observationally and theoretically, to understand the interacting processes taking place in planetary systems consisting of a hot Jupiter orbiting its star within 10 stellar radii. Several independent studies have converged on the same scenario: that a short-period planet can induce activity on the ...
Evgenya Shkolnik +9 more
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X-Ray Activity Variations and Coronal Abundances of the Star–Planet Interaction Candidate HD 179949
The Astrophysical Journal, 2023 We carry out detailed spectral and timing analyses of the Chandra X-ray data of HD 179949, a prototypical example of a star with a close-in giant planet with possible star–planet interaction (SPI) effects. We find a low coronal abundance A (Fe)/ A H) ≈ 0.
Anshuman Acharya +4 more
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Star-planet interactions and dynamical evolution of exoplanetary systems
EPJ Web of Conferences, 2015 The dynamical evolution of planetary systems, after the evaporation of the accretion disk, is the result of the competition between tidal dissipation and the net angular momentum loss of the system.
Damiani Cilia
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A COMPREHENSIVE STATISTICAL ASSESSMENT OF STAR-PLANET INTERACTION [PDF]
The Astrophysical Journal, 2015 16 pages, 2 tables, 10 figures, accepted to ...
Miller, Brendan P. +3 more
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Energetics of star–planet magnetic interactions
Astronomy & AstrophysicsContext. Star–planet magnetic interactions (SPMIs) occurring in the sub-Alfvénic regime can, in principle, induce stellar chromospheric hotspots. These hotspots could serve as observational markers for inferring key planetary properties, especially the ...
Paul Arghyadeep, Strugarek Antoine
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The Astronomical JournalStudying the relative orientations of the orbits of exoplanets and wide-orbiting binary companions (semimajor axis greater than 100 au) can shed light on how planets form and evolve in binary systems. Previous observations by multiple groups discovered a
Sam Christian +35 more
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Magnetic Effect on the Evolution of an Eccentric and Inclined Orbit
The Astrophysical JournalWe provide a method to calculate the evolution of an eccentric and inclined orbit under the magnetic effect. Taking the unipolar interaction as an example, we study both coplanar and inclined orbits. We calculate the Lorentz force and then the changes in
Xing Wei
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CoRoT-2a Magnetic Activity: Hints for Possible Star–Planet Interaction [PDF]
Earth, Moon, and Planets, 2009 CoRoT-2a is a young (about 0.5 Gyr) G7V star accompanied by a transiting hot-Jupiter, discovered by the CoRoT satellite (Alonso et al. 2008; Bouchy et al. 2008). An analysis of its photospheric activity, based on spot modelling techniques previously developed by our group for the analysis of the Sun as a star, shows that the active regions on CoRoT-2a ...
Pagano, Isabella +5 more
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Modelling star-planet magnetic interactions of HD 189733
Monthly Notices of the Royal Astronomical Society, 2022 ABSTRACT Magnetic interactions between stars and close-in planets may lead to a detectable signal on the stellar disc. HD 189733 is one of the key exosystems thought to harbour magnetic interactions, which may have been detected in 2013 August.
Strugarek, A +12 more
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III.9 Star-planet Interactions
, 2016 This book is dedicated to all the people interested in the CoRoT mission and the beautiful data that were delivered during its six year duration. Either amateurs, professional, young or senior researchers, they will find treasures not only at the time of this publication but also in the future twenty or thirty years. It presents the data in their final
Lanza, A. F., Ferraz-Mello, S.
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