Results 41 to 50 of about 404,312 (236)
Effect of the exoplanet magnetic field topology on its magnetospheric radio emission [PDF]
A&A, Forthcoming article, 2018, 2018 The magnetized wind from stars that impact exoplanets should lead to radio emissions. According to the scaling laws derived in the solar system, the radio emission should depend on the stellar wind, interplanetary magnetic field, and topology of the exoplanet magnetosphere. The aim of this study is to calculate the dissipated power and subsequent radio
arxiv +1 more source
Radial velocity eclipse mapping of exoplanets [PDF]
, 2015 Planetary rotation rates and obliquities provide information regarding the history of planet formation, but have not yet been measured for evolved extrasolar planets.
Barnes J. W. +23 more
core +2 more sources
Dynamical Mass of the Exoplanet Host Star HR 8799
The Astronomical Journal, 2022 Abstract HR 8799 is a young A5/F0 star hosting four directly imaged giant planets at wide separations (∼16–78 au), which are undergoing orbital motion and have been continuously monitored with adaptive optics imaging since their discovery over a decade ago. We present a dynamical mass of HR 8799 using 130 epochs of relative astrometry of
Aldo G. Sepulveda, Brendan P. Bowler
openaire +2 more sources
TOI-1670 c, a 40 day Orbital Period Warm Jupiter in a Compact System, Is Well Aligned
The Astrophysical Journal Letters, 2023 We report the measurement of the sky-projected obliquity angle λ of the warm Jovian exoplanet TOI-1670 c via the Rossiter–McLaughlin effect. We observed the transit window during UT 2023 April 20 for 7 continuous hours with NEID on the 3.5 m WIYN ...
Jack Lubin +23 more
doaj +1 more source
Observations of Extrasolar Planets During the non-Cryogenic Spitzer Space Telescope Mission [PDF]
, 2007 Precision infrared photometry from Spitzer has enabled the first direct studies of light from extrasolar planets, via observations at secondary eclipse in transiting systems.
David Charbonneau +7 more
core +2 more sources
Regular and chaotic orbits in the dynamics of exoplanets [PDF]
The European Physical Journal Special Topics, 2016 Many of exoplanetary systems consist of more than one planet and the study of planetary orbits with respect to their long-term stability is very interesting. Furthermore, many exoplanets seem to be locked in a mean-motion resonance (MMR), which offers a phase protection mechanism, so that, even highly eccentric planets can avoid close encounters ...
openaire +3 more sources
Know the Star, Know the Planet. III. Discovery of Late-Type Companions to Two Exoplanet Host Stars [PDF]
, 2015 We discuss two multiple star systems that host known exoplanets: HD 2638 and 30 Ari B. Adaptive optics imagery revealed an additional stellar companion to both stars.
Baranec, Christoph +6 more
core +3 more sources
The Astronomical Journal, 2023 Large-scale exoplanet surveys like the Transiting Exoplanet Survey Satellite (TESS) mission are powerful tools for discovering large numbers of exoplanet candidates.
Christopher R. Mann +50 more
doaj +1 more source
Classification of Trajectories in a Two-planet Exosystem Using the Generalized Three-body Problem
The Astrophysical Journal, 2023 We deploy the theory of the generalized three-body problem to describe an exosystem composed of a host star, a transiting Jupiter-sized exoplanet, and an Earth-sized exoplanet.
Eman M. Moneer +5 more
doaj +1 more source
Exclusion of Stellar Companions to Exoplanet Host Stars [PDF]
, 2017 Given the frequency of stellar multiplicity in the solar neighborhood, it is important to study the impacts this can have on exoplanet properties and orbital dynamics.
Ciardi, David R. +5 more
core +3 more sources