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List Of Y-dwarfs
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Y Dwarf
An object with a spectral type Y (also called Y dwarf) is either a brown dwarf or a rogue planet, free-floating planetary-mass object. They have temperatures below around 500 Kelvin (227°C; 440°F) and are colder than T dwarf, T-dwarfs. Y-dwarfs have a similar spectrum when compared to the giant planet Jupiter. Early theories and discovery When the spectral classes of L dwarf, L dwarfs and T dwarf, T dwarfs were defined it was mentioned that the letter Y was available for an additional spectral class. In the early 2000s it was already theorized that objects "beyond the T dwarfs" should exist and that these objects would bridge the gap between T dwarfs and the giant planet, giant planets of the Solar System. Objects colder than T dwarfs would primarily emit infrared as thermal radiation, so observations and discoveries with infrared telescopes such as Wide-field Infrared Survey Explorer, WISE, Spitzer Space Telescope, Spitzer and James Webb Space Telescope were anticipated. Model ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
