failed star


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failed star:

see brown dwarfbrown dwarf,
in astronomy, celestial body that is larger than a planet but does not have sufficient mass to convert hydrogen into helium via nuclear fusion as stars do. Also called "failed stars," brown dwarfs form in the same way as true stars (by the contraction of a swirling
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.

failed star

[¦fāld ′stär]
(astronomy)
References in periodicals archive ?
The mass of the planet places it almost exactly at the conventional boundary that separates planets from brown dwarfs, and this is why scientists cannot determine whether it is, in fact, a planet that was born out of the disk around its host star or if it is a low-mass failed star.
An infrared camera on the orbiting Spitzer Space Telescope took just 20 seconds to find evidence of the disk around the failed star, OTS 44, also known as a brown dwarf.
According to International Astronomical Union standards, the heavier body is a failed star known as a brown dwarf.
At both Keck II and Gemini North, Liu and his colleagues took images of a failed star, or brown dwarf, orbiting a young, sun-like star at a distance that could be just slightly greater than that at which Saturn orbits our sun.
Washington, July 30 (ANI): Astronomers have discovered a very young brown dwarf (or failed star dubbed "PZ Tel B") in a tight orbit around a young nearby Sun-like star (PZ Tel A).
Among the seven TW Hydrae stars that they examined, they found a disk around two, a dusty ring around another, and, for a fourth, an orbiting companion whose large mass qualifies it as a failed star.
One system features an orbiting body so massive it may qualify as a failed star.
If we see the system almost pole-on - a slim possibility - the orbiting object could even be a brown dwarf, a failed star dozens of times Jupiter's mass.
That's why many astronomers argue that the newly found bodies are not planets at all but an unusually low-mass version of a failed star called a brown dwarf.
15, the Chandra X-ray Observatory stared at an old, failed star for 9 hours and saw absolutely nothing.
However, she also suggested that the object might be a failed star, known as a brown dwarf, or it could still be a planet--though hotter and possibly younger than she had thought.
The Gaia mission is also expected to discover hundreds of thousands of unknown celestial objects, including extra-solar planets and failed stars, known as brown dwarfs.