Results 1 to 10 of about 3,589,167 (266)
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
doaj +5 more sources
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
doaj +7 more sources
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 ...
Michael M. Shara, Jarrod Robert Hurley
exaly +4 more sources
The origin of free-floating planets [PDF]
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.
Núria Miret-Roig
exaly +6 more sources
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
doaj +4 more sources
Interaction of free-floating planets with a star–planet pair [PDF]
Celestial Mechanics and Dynamical Astronomy, 2012 The recent discovery of free-floating planets and their theoretical interpretation as celestial bodies, either condensed independently or ejected from parent stars in tight clusters, introduced an intriguing possibility. Namely, that some exoplanets are not condensed from the protoplanetary disk of their parent star.
Kleomenis Tsiganis, Harry Varvoglis
exaly +3 more sources
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
doaj +3 more sources
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 ...
exaly +3 more sources
Microlensing due to free-floating moon-planet systems
Monthly Notices of the Royal Astronomical Society, 2023 ABSTRACT Gravitational microlensing is a powerful method for detecting and characterizing free-floating planetary-mass objects (FFPs). FFPs could have exomoons rotating them. In this work, we study the probability of realizing these systems (i.e. free-floating moon-planet ones) through microlensing observations. These systems make mostly
Sedighe Sajadian
exaly +3 more sources
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
doaj +3 more sources