Results 11 to 20 of about 21,014 (313)
Free-floating Planets, Survivor Planets, Captured Planets, and Binary Planets from Stellar Flybys [PDF]
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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Microlensing planets in M 22: Free-floating or bound? [PDF]
Astronomy & Astrophysics, 2001 We use detailed numerical simulations and theoretical estimates to show that, if confirmed, the unusually brief microlensing events observed by Sahu et al.
R. de la Fuente Marcos +1 more
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Free-floating or Wide-orbit? Keck Adaptive-optics Observations of Free-floating Planet Candidates Detected with Gravitational Microlensing [PDF]
The Astronomical Journal, 2023 Recent detections of extremely short-timescale microlensing events imply the existence of a large population of Earth- to Neptune-mass planets that appear to have no host stars.
Przemek Mróz +3 more
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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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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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MICROLENSING BY KUIPER, OORT, AND FREE-FLOATING PLANETS
Journal of The Korean Astronomical Society, 2016 Microlensing is generally thought to probe planetary systems only out to a few Einstein radii. Microlensing events generated by bound planets beyond about 10 Einstein radii generally do not yield any trace of their hosts, and so would be classified as ...
Andrew Gould
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The Astrophysical JournalThe discovery of numerous free-floating planets (FFPs) has intensified interest in their origins and dynamical histories. A leading formation mechanism is planet–planet scatterings in unstable multiplanetary systems, which can naturally lead to planetary
Xiumin Huang, Dong Lai
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Secure Identification of Free-Floating Planets
The 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.
Cheongho Han +3 more
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Free-floating planets from core accretion theory: microlensing predictions [PDF]
Monthly Notices of the Royal Astronomical Society: Letters, 2016 We calculate the microlensing event rate and typical time-scales for the free-floating planet (FFP) population that is predicted by the core accretion theory of planet formation.
Ida, Shigeru +4 more
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Planet-Planet Scattering Alone Cannot Explain the Free-Floating Planet Population [PDF]
Monthly Notices of the Royal Astronomical Society: Letters, 2012 Recent gravitational microlensing observations predict a vast population of free-floating giant planets that outnumbers main sequence stars almost twofold.
Adams +62 more
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