The On/Off Nature of Star‐Planet Interactions [PDF]
Astrophysical Journal, 2008 Evidence suggesting an observable magnetic interaction between a star and its hot Jupiter appears as a cyclic variation of stellar activity synchronized to the planet's orbit. In this study, we monitored the chromospheric activity of 7 stars with hot Jupiters using new high-resolution echelle spectra collected with ESPaDOnS over a few nights in 2005 ...
Evgenya Shkolnik, Andrew Cameron
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Star-planet interactions [PDF]
Astronomy and Astrophysics, 2018 Context. When planets are formed from the protoplanetary disk and after the disk has dissipated, the evolution of their orbits is governed by tidal interactions, friction, and gravitational drag, and also by changes in the mass of the star and planet. These interactions may change the initial distribution of the distances between the planets and their ...
Christoph Mordasini +2 more
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The corona of GJ 1151 in the context of star–planet interaction [PDF]
Monthly Notices of the Royal Astronomical Society, 2020 ABSTRACT The low-mass star GJ 1151 has been reported to display variable low-frequency radio emission, which has been interpreted as a signpost of coronal star–planet interactions with an unseen exoplanet. Here we report the first X-ray detection of GJ 1151’s corona based on the XMM–Newton data.
J D Alvarado-Gomez +2 more
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Star-planet interactions and dynamical evolution of exoplanetary systems [PDF]
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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X-Ray Activity Variations and Coronal Abundances of the Star–Planet Interaction Candidate HD 179949 [PDF]
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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Tidal star–planet interaction and its observed impact on stellar activity in planet-hosting wide binary systems [PDF]
Monthly Notices of the Royal Astronomical Society, 2022 Katja Poppenhaeger, Nikoleta Ilić
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Sungrazer comets as analogs of star-planet magnetic interactions
Astronomy & AstrophysicsContext. Star–planet magnetic interactions (SPMIs) can transfer energy from an exoplanet to its host star via Alfvén waves when the planet orbits within a sub-Alfvénic stellar wind.
Guité L.-S. +7 more
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MOVES – V. Modelling star–planet magnetic interactions of HD 189733 [PDF]
Monthly Notices of the Royal Astronomical Society, 2022 Aline Vidotto +2 more
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Planetary perturbers: flaring star–planet interactions in Kepler and TESS
Monthly Notices of the Royal Astronomical Society, 2023 J D Alvarado-Gomez +2 more
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Evaluating Star–Planet Interactions with Zeeman Doppler Imaging: Case Study in YZ Ceti
The Astrophysical JournalThe recent detections of radio emission from the nearby exoplanet host, YZ Ceti, suggest that the star is possibly interacting with its rocky innermost planet.
J. Sebastian Pineda +5 more
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