Brown dwarfs are substellar objects that have more mass than the biggest gas giant planets, but less than the least massive main-sequence stars. Their...
186 KB (20,207 words) - 06:41, 25 August 2024
is a list of brown dwarfs. These are objects that have masses between heavy gas giants and low-mass stars. The first isolated brown dwarf discovered was...
87 KB (1,787 words) - 20:33, 11 August 2024
A sub-brown dwarf or planetary-mass brown dwarf is an astronomical object that formed in the same manner as stars and brown dwarfs (i.e. through the collapse...
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These red dwarfs have spectral types of L0 to L2. There is some overlap with the properties of brown dwarfs, since the most massive brown dwarfs at lower...
36 KB (4,249 words) - 12:06, 3 July 2024
dwarfs is one observational limit on the universe's age. The name "black dwarf" has also been applied to hypothetical late-stage cooled brown dwarfs –...
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Planetary-mass object (section Sub-brown dwarfs)
planets) or formed through cloud-collapse rather than accretion (sub-brown dwarfs). While the term technically includes exoplanets and other objects, it...
18 KB (1,994 words) - 22:45, 14 August 2024
A white dwarf is a stellar core remnant composed mostly of electron-degenerate matter. A white dwarf is very dense: its mass is comparable to the Sun's...
164 KB (18,719 words) - 11:36, 18 August 2024
A dwarf star is a star of relatively small size and low luminosity. Most main sequence stars are dwarf stars. The meaning of the word "dwarf" was later...
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The brown-dwarf desert is a theorized range of orbits around a star within which brown dwarfs are unlikely to be found as companion objects. This is usually...
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brown dwarfs would have ceased fusion long before their discovery. Binary stars and other multiple-star formations are common, and many brown dwarfs orbit...
84 KB (10,296 words) - 23:19, 23 August 2024
This list covers all known stars, white dwarfs, brown dwarfs, and sub-brown dwarfs within 20 light-years (6.13 parsecs) of the Sun. So far, 131 such objects...
116 KB (5,520 words) - 21:27, 24 August 2024
Stellar classification (redirect from Y Dwarf)
"Yellow" dwarfs such as the Sun are white, "red" dwarfs are a deep shade of yellow/orange, and "brown" dwarfs do not literally appear brown, but hypothetically...
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which is part of the Zooniverse web portal. It aims to discover new brown dwarfs, faint objects that are less massive than stars, some of which might...
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of planetary mass which is not gravitationally bound to any star or brown dwarf. Rogue planets may originate from planetary systems in which they are...
80 KB (7,817 words) - 07:22, 26 August 2024
Nine likeliest dwarf planets and dates of discovery A dwarf planet is a small planetary-mass object that is in direct orbit around the Sun, massive enough...
97 KB (8,987 words) - 12:13, 19 August 2024
fusion of deuterium), it is too massive to be a planet and might be a brown dwarf instead. Known orbital times for exoplanets vary from less than an hour...
147 KB (15,935 words) - 12:18, 23 August 2024
stellar scale. Then there is the fact that these objects might be brown dwarfs, sub-brown dwarfs, or not exist at all. Because of this, this list only cites...
113 KB (8,224 words) - 13:16, 25 August 2024
Perovskite (section In stars and brown dwarfs)
occurs in carbonatite near Schelingen, Kaiserstuhl, Germany. In stars and brown dwarfs the formation of perovskite grains is responsible for the depletion of...
16 KB (1,588 words) - 08:04, 26 April 2024
This is a list of stars, neutron stars, white dwarfs and brown dwarfs which are the least voluminous known (the smallest stars by volume). This is a list...
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generally required to be in orbit around a star, stellar remnant, or brown dwarf, and is not one itself. The Solar System has eight planets by the most...
197 KB (20,743 words) - 12:13, 23 August 2024
hydrogen to begin. These are known as brown dwarfs. The International Astronomical Union defines brown dwarfs as stars massive enough to fuse deuterium...
49 KB (6,421 words) - 19:38, 1 August 2024
Mamajek's team initially hypothesized that J1407b is an exoplanet or brown dwarf orbiting the star, but that has since been disfavored by later studies...
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blue dwarf is a predicted class of star that develops from a red dwarf after it has exhausted much of its hydrogen fuel supply. Because red dwarfs fuse...
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titleholders of being the red dwarf with the smallest volume, and its succession over time. List of least massive stars List of brown dwarfs Lists of stars Croswell...
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B-type main-sequence star (redirect from Blue-white dwarf)
diagram Spectral type O B A F G K M L T Brown dwarfs White dwarfs Red dwarfs Subdwarfs Main sequence ("dwarfs") Subgiants Giants Red giants Blue giants...
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of astronomical objects with the spectral type Y. They are a mix of brown dwarfs and planetary-mass objects. They are the coldest such objects in interstellar...
35 KB (2,469 words) - 06:39, 21 August 2024
sustained (approximately 0.08 solar masses). This definition includes brown dwarfs and former stars similar to EF Eridani B, and can also include objects...
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diagram Spectral type O B A F G K M L T Brown dwarfs White dwarfs Red dwarfs Subdwarfs Main sequence ("dwarfs") Subgiants Giants Red giants Blue giants...
18 KB (2,103 words) - 10:29, 24 August 2024
G-type main-sequence star (redirect from G-type dwarf)
star (spectral type: G-V), also often, and imprecisely, called a yellow dwarf, or G star, is a main-sequence star (luminosity class V) of spectral type...
12 KB (1,178 words) - 10:49, 13 August 2024
Gliese 229 (category T-type brown dwarfs)
as Gl 229 or GJ 229) is a binary system composed of a red dwarf and the second brown dwarf seen by astronomers, 18.8 light years away in the constellation...
18 KB (1,648 words) - 18:29, 18 July 2024