Results 21 to 30 of about 20,871 (275)
Masses for free-floating planets and dwarf planets [PDF]
Research in Astronomy and Astrophysics, 2021 Abstract The mass and distance functions of free-floating planets (FFPs) would give major insights into the formation and evolution of planetary systems, including any systematic differences between those in the disk and bulge. We show that the only way to measure the mass and distance of individual FFPs over a broad range of distances ...
Gould, Andrew +3 more
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Free-floating planets in stellar clusters? [PDF]
Monthly Notices of the Royal Astronomical Society, 2001 We have simulated encounters between planetary systems and single stars in various clustered environments. This allows us to estimate the fraction of systems liberated, the velocity distribution of the liberated planets, and the separation and eccentricity distributions of the surviving bound systems.
Smith, Kester W., Bonnell, Ian A.
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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.
Varvoglis, Harry +2 more
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Interpreting the M22 Spike Events [PDF]
, 2001 Recently Sahu et al., using the Hubble Space Telescope to monitor stars in the direction of the old globular cluster M22, detected six events in which otherwise constant stars brightened by ~50% during a time of 1 AU would have been ionized by random ...
Armitage P. J. +11 more
core +2 more sources
The Astronomical Journal, 2023 We report the discoveries of low-mass free-floating planet (FFP) candidates from the analysis of 2006–2014 MOA-II Galactic bulge survey data. In this data set, we found 6111 microlensing candidates and identified a statistical sample consisting of 3535 ...
Naoki Koshimoto +31 more
doaj +1 more source
Free-floating planets in the Milky Way [PDF]
Arabian Journal of Mathematics, 2019 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Hamolli L. +3 more
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Geosciences, 2018 “Free-floating, non-deuterium-burning, substellar objects” are isolated bodies of a few Jupiter masses found in very young open clusters and associations, nearby young moving groups, and in the immediate vicinity of the Sun.
José A. Caballero
doaj +1 more source
Direct imaging constraints on planet populations detected by microlensing [PDF]
, 2012 Results from gravitational microlensing suggested the existence of a large population of free-floating planetary mass objects. The main conclusion from this work was partly based on constraints from a direct imaging survey.
Beaulieu +14 more
core +1 more source
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, Parisa Sangtarash
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Free-floating Planet Mass Function from MOA-II 9 yr Survey toward the Galactic Bulge
The Astronomical Journal, 2023 We present the first measurement of the mass function of free-floating planets (FFPs), or very wide orbit planets down to an Earth mass, from the MOA-II microlensing survey in 2006–2014.
Takahiro Sumi +28 more
doaj +1 more source