Results 1 to 10 of about 480 (252)
Free-floating Planets, Survivor Planets, Captured Planets, and Binary Planets from Stellar Flybys
The Astrophysical JournalIn star clusters, close stellar encounters can strongly impact the architecture of a planetary system or even destroy it. We present a systematic study of the effects of stellar flybys on two-planet systems.
Fangyuan Yu, Dong Lai
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The origin of free-floating planets
Astrophysics and Space Science, 2023 AbstractFree-floating planets (FFPs) are the lightest products of star formation and they carry important information on the initial conditions of the environment in which they were formed. They were first discovered in the 2000 s but still few of them have been identified and confirmed due to observational challenges.
N Miret-Roig
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Properties of Free-floating Planets Ejected through Planet–Planet Scattering
The Astrophysical JournalMultiple studies show that planet–planet scattering plays a key role in the dynamical evolution of planetary systems. It can also contribute to the census of free-floating planets.
Hareesh Gautham Bhaskar, Hagai B. Perets
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How Rare Are TESS Free-floating Planets?
The Astrophysical Journal LettersRecently, Kunimoto et al. claimed that a short-lived signal in the Transiting Exoplanet Survey Satellite (TESS) Sector 61 database was possibly caused by a microlensing event with a terrestrial-mass free-floating planet (FFP) lens.
Hongjing Yang +5 more
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Secure Identification of Free‐floating Planets
Astrophysical Journal, 2006 Among the methods proposed to detect extrasolar planets, microlensing is the only technique that can detect free-floating planets. Free-floating planets are detected through the channel of short-duration isolated lensing events. However, if a seemingly isolated planetary event is detected, it is difficult to firmly conclude that the event is caused by ...
Cheongho Han
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Dynamical Instability of Multiplanet Systems and Free-floating Planets
The Astrophysical JournalThe ejection of planets by the instability of planetary systems is a potential source of free-floating planets. We numerically simulate multiplanet systems to study the evolution process, the properties of the surviving systems, and the statistics of the
Ruocheng Zhai +3 more
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Free‐floating Planets in Stellar Clusters: Not So Surprising [PDF]
Astrophysical Journal, 2002 We find that free-floating planets can remain bound to an open cluster for much longer than was previously calculated: of the order of the cluster half-mass relaxation timescale as opposed to the crossing time. This result is based on N-body simulations performed with the new GRAPE-6 special purpose hardware and is important in the context of the ...
Jarrod R Hurley, Michael M Shara
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ON THE ORIGIN OF PLANETS AT VERY WIDE ORBITS FROM THE RECAPTURE OF FREE FLOATING PLANETS [PDF]
Astrophysical Journal, 2012 In recent years several planets have been discovered at wide orbits (>100 AU) around their host stars. Theoretical studies encounter difficulties in explaining their formation and origin. Here we propose a novel scenario for the production of planetary systems at such orbits, through the dynamical recapture of free floating planets (FFPs) in ...
Hagai B Perets, M B N Kouwenhoven
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Gravitational Microlensing: A Tool for Detecting and Characterizing Free‐Floating Planets [PDF]
Astrophysical Journal, 2004 total 8 pages, including 3 figures, ApJ, in press (Mar 1, 2004)
Cheongho Han +2 more
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Parallax Effect in Microlensing Events Due to Free-floating Planets
The Astronomical JournalOne of the most important applications of microlensing observations is the detection of free-floating planets (FFPs). The timescale of microlensing due to FFPs ( t _E ) is short (a few days). Discerning the annual parallax effect in observations of these
Parisa Sangtarash, Sedighe Sajadian
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