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Planet-star interactions with precise transit timing
Astronomy and Astrophysics, 2022 Context. Hot Jupiters on extremely short-period orbits are expected to be unstable due to tidal dissipation and spiral toward their host stars. That is because they transfer the angular momentum of the orbital motion through tidal dissipation into the stellar interior. Although the magnitude of this phenomenon is related to the physical properties of a
G Maciejewski, J Ohlert, M Mugrauer
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Planet-star interactions with precise transit timing
Astronomy & AstrophysicsAims. Tidal interactions shape the evolution of close-in giant planets and internal gravity-wave breaking offers an efficient pathway for dynamical-tide dissipation, although its population-wide impact remains poorly constrained.
Golonka J., Maciejewski G.
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The birth environment of planetary systems [PDF]
Royal Society Open Science, 2020 Star and planet formation are inextricably linked. In the earliest phases of the collapse of a protostar, a disc forms around the young star and such discs are observed for the first several million years of a star’s life.
Richard J. Parker
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ROME. III. The Arecibo Search for Star–Planet Interactions at 5 GHz
The Astrophysical Journal, 2023 After nearly three decades of discovery, many exoplanetary systems have been studied and characterized in detail with one important exception: exoplanet magnetism.
Matthew Route, Alexander Wolszczan
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Magnetic energy fluxes in sub-Alfvénic planet star and moon planet interactions [PDF]
Astronomy & Astrophysics, 2013 Context. Electromagnetic coupling of planetary moons with their host planets is well observed in our solar system. Similar couplings of extrasolar planets with their central stars have been studied observationally on an individual as well as on a statistical basis.Aims.
J. Saur +4 more
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GJ 357 d: Potentially Habitable World or Agent of Chaos?
The Astronomical Journal, 2023 Multiplanet systems provide important laboratories for exploring dynamical interactions within the range of known exoplanetary system architectures. One such system is GJ 357, consisting of a low-mass host star and three orbiting planets, the outermost ...
Stephen R. Kane, Tara Fetherolf
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Interactions of exoplanets with their environment
Comptes Rendus. Physique, 2023 Exoplanets on close-in orbit are subject to intense interactions with their host star. They receive a strong irradiation from the star, trigger tides within their host, and stars and close-in planets can be magnetically connected.
Strugarek, Antoine
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Acta Astronomica, 2020 From its discovery, the WASP-18 system with its massive transiting planet on a tight orbit was identified as a unique laboratory for studies on tidal planet-star interactions. In an analysis of Doppler data, which include five new measurements obtained with the HIRES/Keck-I instrument between 2012 and 2018, we show that the radial velocity signal of ...
Maciejewski, G. +6 more
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THE REFLECTION EFFECT IN INTERACTING BINARIES OR IN PLANET-STAR SYSTEMS [PDF]
The Astronomical Journal, 2011 There are many similarities between interacting binary stars and stars with a close-in giant extrasolar planet. The reflection effect is a well-known example. Although the generally accepted treatment of this effect in interacting binaries is successful in fitting light curves of eclipsing binaries, it is not very suitable for studying cold objects ...
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The Astronomical Journal, 2023 We leverage Gaia DR2 parallactic distances to deliver new or revised estimates of planetary parameters and X-ray irradiation for a distance-limited (≲100 pc) sample of 27 gaseous planets (from super-Earths to hot Jupiters) with publicly available Chandra
Riccardo Spinelli +6 more
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