Results 51 to 60 of about 22,639,627 (262)
Search for (sub)stellar Companions of Exoplanet Hosts by Exploring the Second ESA-Gaia Data Release
Frontiers in Astronomy and Space Sciences, 2021 We present the latest results of an ongoing multiplicity survey of exoplanet hosts, which was initiated at the Astrophysical Institute and University Observatory Jena, using data from the second data release of the ESA-Gaia mission.
K.-U. Michel, M. Mugrauer
doaj +1 more source
ASTEROSEISMIC DETERMINATION OF OBLIQUITIES OF THE EXOPLANET SYSTEMS KEPLER-50 AND KEPLER-65 [PDF]
, 2013 Results on the obliquity of exoplanet host stars—the angle between the stellar spin axis and the planetary orbital axis—provide important diagnostic information for theories describing planetary formation.
W. Chaplin +30 more
semanticscholar +1 more source
Homogeneous Transit Timing Analyses of Ten Exoplanet Systems [PDF]
, 2022 16 pages, 5 figures, accepted for publication by the ...
Baştürk, Ö +21 more
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The Astronomical Journal, 2023 The K-type star TOI-2525 has an estimated mass of M = ${0.849}_{-0.033}^{+0.024}$ M _⊙ and radius of R = ${0.785}_{-0.007}^{+0.007}$ R _⊙ observed by the TESS mission in 22 sectors (within sectors 1 and 39).
Trifon Trifonov +46 more
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Exoplanet Transit Parallax [PDF]
, 2007 The timing and duration of exoplanet transits has a dependency on observer position due to parallax. In the case of an Earth-bound observer with a 2 AU baseline the dependency is typically small and slightly beyond the limits of current timing precision ...
Bienayme O., Caleb A. Scharf, Dravins D.
core +3 more sources
HD3651B: the first directly imaged brown dwarf companion of an exoplanet host star [PDF]
, 2006 In the course of our ongoing multiplicity study of exoplanet host stars we detected a faint companion located at ~43arcsec (480AU physical projected separation) north-west of its primary -- the exoplanet host star HD3651 at 11pc.
Mazeh, T. +3 more
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Resilient habitability of nearby exoplanet systems [PDF]
Monthly Notices of the Royal Astronomical Society, 2019 ABSTRACT We investigate the possibility of finding Earth-like planets in the habitable zone of 34 nearby FGK-dwarfs, each known to host one giant planet exterior to their habitable zone detected by RV. First we simulate the dynamics of the planetary systems in their present day configurations and determine the fraction of stable ...
Giorgi Kokaia +2 more
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Predictions of the Nancy Grace Roman Space Telescope Galactic Exoplanet Survey. II. Free-floating Planet Detection Rates [PDF]
Astronomical Journal, 2020 The Nancy Grace Roman Space Telescope (Roman) will perform a Galactic Exoplanet Survey (RGES) to discover bound exoplanets with semimajor axes greater than 1 au using gravitational microlensing. Roman will even be sensitive to planetary-mass objects that
Samson A. Johnson +7 more
semanticscholar +1 more source
General AMD-stability criterion for exoplanet systems
The increasing discovery of extrasolar systems has made it necessary to study their stability. In this work, we present a generalization of the AMD-stability criterion defined by Laskar and Petit (2017), which defines a critical AMD-value below which close encounters are prevented and the system can be considered stable.
Justine Bodart +2 more
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X-Ray studies of exoplanet systems [PDF]
, 2022 X-rays are integral to furthering our knowledge of exoplanetary systems. In this work we discuss the use of X-ray observations to understand star-planet interac- tions, mass-loss rates of an exoplanet’s atmosphere and the study of an exoplanet’s atmospheric components using future X-ray spectroscopy.
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