Examples of using Brown dwarfs in English and their translations into Vietnamese
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The use of lithium to distinguish candidate brown dwarfs from low-mass stars is commonly referred to as the lithium test, and was pioneered by Rafael Rebolo and colleagues.
photometric measurements, the two brown dwarfs are no larger than 61 and 50 Jupiter masses,
Methane: Unlike stars, older brown dwarfs are sometimes cool enough that over very long periods of time their atmospheres can gather observable quantities of methane.
This is particularly odd as such low-mass stars near the boundary between brown dwarfs and hydrogen-fusing stars should be expected to have considerably less metal content than the Sun.
Researchers at the Argelander Institute of Astronomy of the University of Bonn have discovered that brown dwarfs need to be treated as a separate class in addition to stars and planets.
much faster than normal stars and other brown dwarfs and are thought to have formed when the Galaxy was very young,
of matter that is hard to observe, such as wimps, or brown dwarfs and low-mass stars that are never hot enough to burn hydrogen.
Barnard's Star and the brown dwarfs Luhman 16 and WISE 0855- 0714 are known to be closer.
types of M7 and later, and extends beyond the coolest stars to brown dwarfs as cool as spectral type T6.5.
Wolf 359 and the brown dwarfs Luhman 16 and WISE 0855-0714 are known to be closer.
The paucity of brown dwarfs in close orbits was first noted between 1998- 2000 when a sufficient number of extrasolar planets had been found to perform statistical studies.
The smallest known brown dwarfs are about 5 to 10 times the mass of our planet Jupiter-- that's as massive as some known gas-giant planets around other stars.
However, deuterium is quite rare, and most brown dwarfs would have ceased fusing deuterium long before their discovery, making them effectively indistinguishable from supermassive planets.[46].
When young(up to a gigayear old) brown dwarfs can have temperatures and luminosities similar to some stars,
old, brown dwarfs can have temperatures and luminosities similar to some stars,
The smallest known brown dwarfs are about five to 10 times the mass of Jupiter- which is as massive as some known gas giant planets around other stars.
Other brown dwarfs that may be closer to the Sun include ε Indi Ba and ε Indi Bb at 11.8 light-years
WISE 0350- 5658 is one of the nearest known brown dwarfs: its trigonometric parallax is 0.184± 0.010 arcsecond,
Brown dwarfs occupy the mass range between that of large gas giant planets and the lowest-mass stars;
Other brown dwarfs that may be closer to the Sun include ε Indi Ba and ε Indi Bb at 11.8 light-years