Results 11 to 20 of about 47,304 (316)

Masses for free-floating planets and dwarf planets [PDF]

Research in Astronomy and Astrophysics, 2021
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.
Andrew Gould, Weicheng Zang, Shude Mao, Subo Dong   +3 more
semanticscholar   +6 more sources

Properties of Free-floating Planets Ejected through Planet–Planet Scattering

The Astrophysical Journal
Multiple 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   +4 more sources

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, Barnes, Bihain, Binney, Boley, Boley, Boss, Bowler, Butler, Chabrier, Chambers, Chatterjee, Crida, Cumming, Delorme, Dimitri Veras, Dodson-Robinson, Ford, Ford, Ford, Gould, Holberg, Howard, Johnson, Johnson, Jurić, Kennedy, Lada, Lin, Lin, Lovis, Lucas, Malmberg, Malmberg, Marois, Marois, Marzari, Nielsen, Nielsen, Papaloizou, Parker, Parravano, Rasio, Raymond, Raymond, Raymond, Raymond, Raymond, Ribas, Sean N. Raymond, Shen, Sumi, Tremaine, Udry, Veras, Veras, Veras, Weidenschilling, Weinberg, Wright, Zakamska, Zapatero Osorio, Zapatero Osorio   +62 more
core   +7 more sources

Dynamical Instability of Multiplanet Systems and Free-floating Planets

The Astrophysical Journal
The 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, Man Hoi Lee, Tianjun Gan, Shude Mao   +3 more
doaj   +4 more sources

Free-floating planets in the Milky Way [PDF]

Arabian Journal of Mathematics, 2019
Gravitational microlensing is a powerful method to search for and characterize exoplanets, and it was first proposed by Paczyński in 1986. We provide a brief historical excursus of microlensing, especially focused on the discoveries of free-floating ...
Lindita Hamolli, M. Hafizi, F. De Paolis, Achille Nucita   +3 more
semanticscholar   +4 more sources

Capture of free-floating planets by planetary systems [PDF]

Monthly Notices of the Royal Astronomical Society, 2017
Evidence of exoplanets with orbits that are misaligned with the spin of the host star may suggest that not all bound planets were born in the protoplanetary disk of their current planetary system.
Nadav Goulinski, Erez N. Ribak
semanticscholar   +7 more sources

Microlensing planets in M22: 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.
Adams, Alcock, Bonnell, Boss, C. de la Fuente Marcos, , Cote, Davidge, de la Fuente Marcos, de la Fuente Marcos, de la Fuente Marcos, de la Fuente Marcos, Eggleton, Gaudi, Jetzer, Kerins, Laughlin, Laughlin, Lucas, Mao, Metcalf, Moore, Paczynski, R. de la Fuente Marcos, , Scalo, Smith, Sánchez-Salcedo, Sánchez-Salcedo, Witt, Zapatero Osorio   +28 more
core   +3 more sources

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, Lin, Douglas N. C., Ma, Sizheng, Mao, Shude, Zhu, Wei   +4 more
core   +8 more sources

Microlensing by Kuiper, Oort, and Free-Floating Planets [PDF]

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 ...
Gould, Andrew
core   +4 more sources

Parallax Effect in Microlensing Events Due to Free-floating Planets

The Astronomical Journal
One 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   +4 more sources