Results 21 to 30 of about 21,014 (313)

The microlensing rate and distribution of free-floating planets towards the Galactic bulge [PDF]

, 2016
Ground-based optical microlensing surveys have provided tantalising, if inconclusive, evidence for a significant population of free-floating planets (FFPs).
Makiko Ban, E. Kerins, A. C. Robin
openalex   +7 more sources

Formation of Free-floating Planets via Ejection: Population Synthesis with a Realistic IMF and Comparison to Microlensing Observations

The Astrophysical Journal
Microlensing observations suggest that the mass distribution of free-floating planets (FFPs) follows a declining power law with increasing mass. The origin of such distribution is unclear.
Kangrou Guo, Shigeru Ida, Masahiro Ogihara   +2 more
doaj   +3 more sources

KMT-2024-BLG-3237: Another Free-floating Planet Candidate with Angular Einstein Radius Measurement

The Astronomical Journal
Planet-formation theories suggest the presence of free-floating planets (FFPs) that are ejected from their formation sites. While these planets emit very little light, they can be identified through gravitational microlensing.
Tanagodchaporn Inyanya, Youn Kil Jung, Hongjing Yang, Kyu-Ha Hwang, Andrew Gould, Michael D. Albrow, Sun-Ju Chung, Cheongho Han, Yoon-Hyun Ryu, In-Gu Shin, Yossi Shvartzvald, Jennifer C. Yee, Weicheng Zang, Dong-Jin Kim, Chung-Uk Lee, Byeong-Gon Park   +15 more
doaj   +2 more sources

HST pre-imaging of a free-floating planet candidate microlensing event [PDF]

Astronomy & Astrophysics
High-cadence microlensing observations uncovered a population of very short-timescale microlensing events, which are believed to be caused by the population of free-floating planets (FFPs) roaming the Milky Way.
Kapusta Mateusz, Mróz Przemek, Ryu Yoon-Hyun, Udalski Andrzej, Kozłowski Szymon, Terry Sean, Szymański Michał K., Soszyński Igor, Pietrukowicz Paweł, Poleski Radosław, Skowron Jan, Ulaczyk Krzysztof, Gromadzki Mariusz, Rybicki Krzysztof, Iwanek Patryk, Wrona Marcin, Mróz Mateusz J., Albrow Michael D., Chung Sun-Ju, Gould Andrew, Han Cheongho, Hwang Kyu-Ha, Jung Youn Kil, Shin In-Gu, Shvartzvald Yossi, Yee Jennifer C., Yang Hongjing, Zang Weicheng, Cha Sang-Mok, Kim Dong-Jin, Kim Seung-Lee, Lee Chung-Uk, Lee Dong-Joo, Lee Yongseok, Park Byeong-Gon, Pogge Richard W.   +35 more
doaj   +2 more sources

Tilted Circumbinary Planetary Systems as Efficient Progenitors of Free-floating Planets

The Astrophysical Journal Letters
The dominant mechanism for generating free-floating planets has so far remained elusive. One suggested mechanism is that planets are ejected from planetary systems due to planet–planet interactions.
Cheng Chen, Rebecca G. Martin, Stephen H. Lubow, C. J. Nixon   +3 more
doaj   +4 more sources

A free-floating planet population in the Galaxy? [PDF]

, 2001
4 pages, 0 figures, to be published in Microlensing 2000: A New Era of Microlensing Astrophysics, ASP conference Series, Vol. 000, 2001, J.W. Menzies and P.D.
H. Zinnecker
openalex   +3 more sources

Two new free-floating or wide-orbit planets from microlensing [PDF]

, 2019
Planet formation theories predict the existence of free-floating planets that have been ejected from their parent systems. Although they emit little or no light, they can be detected during gravitational microlensing events. Microlensing events caused by
Przemek Mróz, Andrzej Udalski, David P. Bennett, Yoon-Hyun Ryu, Takahiro Sumi, Yossi Shvartzvald, Jan Skowron, Radosław Poleski, Paweł Pietrukowicz, Szymon Kozłowski, Michał K. Szymański, Łukasz Wyrzykowski, Igor Soszyński, Krzysztof Ulaczyk, Krzysztof Rybicki, Patryk Iwanek, Michael D. Albrow, Sun-Ju Chung, Andrew Gould, Cheongho Han, Kyu-Ha Hwang, Youn Kil Jung, In-Gu Shin, Jennifer C. Yee, Weicheng Zang, Sang-Mok Cha, Dong-Jin Kim, Hyoun-Woo Kim, Seung-Lee Kim, Chung-Uk Lee, Dong-Joo Lee, Yongseok Lee, Byeong-Gon Park, Richard W. Pogge, Fumio Abe, Richard Barry, Aparna Bhattacharya, Ian A. Bond, Martin Donachie, Akihiko Fukui, Yuki Hirao, Yoshitaka Itow, Kohei Kawasaki, Iona Kondo, Naoki Koshimoto, Man Cheung Alex Li, Yutaka Matsubara, Yasushi Muraki, Shota Miyazaki, Masayuki Nagakane, Clément Ranc, Nicholas J. Rattenbury, Haruno Suematsu, Denis J. Sullivan, Daisuke Suzuki, Paul J. Tristram, Atsunori Yonehara, Dan Maoz, Shai Kaspi, Matan Friedmann   +59 more
openalex   +5 more sources

On the capture of free floating planets

, 2015
Diese Masterarbeit bearbeitet die Interaktion zwischen einem free-floating planet und einem gebundenen Stern-Planeten System. Besonders wird dabei auf den Fall einge- gangen, in dem der free-floating planet vom System eingefangen wird und auf einer Bahn gravitativ gebunden bleibt. Sogenannte free-floating planets werden laufend entdeckt.
Birgit Loibnegger
openalex   +2 more sources

The JWST/NIRISS Deep Spectroscopic Survey for Young Brown Dwarfs and Free-floating Planets

The Astronomical Journal
The discovery and characterization of free-floating planetary-mass objects (FFPMOs) is fundamental to our understanding of star and planet formation. Here we report results from an extremely deep spectroscopic survey of the young star cluster NGC1333 ...
Adam B. Langeveld, Aleks Scholz, Koraljka Mužić, Ray Jayawardhana, Daniel Capela, Loïc Albert, René Doyon, Laura Flagg, Matthew de Furio, Doug Johnstone, David Lafrèniere, Michael Meyer   +11 more
doaj   +2 more sources

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, Zang, Weicheng, Mao, Shude, Dong, Subo   +3 more
openaire   +2 more sources