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CFBDSIR 2149-0403
CFBDSIR 2149-0403 (full designation CFBDSIR J214947.2-040308.9) is a free-floating planetary-mass object (87% likelihood) or low-mass brown dwarf (13% likelihood), likely part of the AB Doradus moving group (ABDMG) as indicated by its position and proper motion.〔〔 There is insufficient evidence to demonstrate that CFBDSIR 2149-0403 formed as a planet and was subsequently ejected. Objects with masses similar to that of CFBDSIR 2149-0403 are predicted to form from the fragmentation of molecular cloud cores like stars do. Although there have been candidates for objects like this reported before, it is the first such object with a spectroscopically confirmed low age and an upper limit on its estimated mass below 13 Jupiter masses. It must be noted that the estimation of its mass rely on its suspected membership in AB Doradus (which provides a distance and an age), as well as on the current generation of brown dwarfs evolutionary models. It is thus by no means a direct mass measurement.
== Discovery ==
CFBDSIR 2149-0403 was discovered by the Canada-France Brown Dwarfs Survey, a near infrared sky survey, and confirmed by WISE data.〔
Philippe Delorme, of the Institute of Planetology and Astrophysics of Grenoble in France and his team, including researchers at Université de Montréal in Canada, detected CFBDSIR2149's infrared signature using the Canada-France-Hawaii Telescope, then examined the body's properties with the European Southern Observatory's Very Large Telescope in Chile.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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