exoplanetas
noticias
Enanas marrones
Los enanos marrones son "estrellas fallidas", objetos entre planetas gigantes como Júpiter y estrellas verdaderas. En su interior no hay fusión estable de hidrógeno como en el Sol, solo una combustión limitada de deuterio. Si orbitan estrellas, parecen parientes lejanos de los planetas, pero también existen vagabundos solitarios. Sus temperaturas son mucho más bajas que las de las estrellas, enfriándose a veces hasta niveles terrestres.
- Percentage of Enanas marrones within 98.5 años luz: 12.24 % (1165 from 9520 stars)
- Average masa of Enanas marrones: 1.2-8.0% solar mass
- Average radius of Enanas marrones: 9-11% solar radius
- Average temperatura of Enanas marrones: 600-2500 K
Enanas marrones
Advertisement
Enanas marrones
| Nombre de la estrella | Masa | Distancia | ||
|---|---|---|---|---|
|
|
Luhman 16 LUH 16, Luhman–WISE 1, WISE J104915.57−531906.1, DENIS-P J104919.0−531910, 2MASS J10491891−5319100, IRAS Z10473-5303, AKARI J1049166−531907, GSC2.2 S11132026703, GSC2.3 S4BM006703 |
L7.5 | 0.03 M☉ | 6.5 ly |
|
|
Luhman 16 B | T0.5 | 0.03 M☉ | 6.5 ly |
|
|
WISE 0855-0714 WISEA J085510.74-071442.5, WISE J085510.83-071442.5 |
Y2 | 0.01 M☉ | 7.3 ly |
|
|
2MASS J1812-2608 2MASS J18121245-2608024, IRAS 18090-2608, TIC 264867486, OGLE BLG-LPV-225466, Gaia DR2 4064714550310189440 |
T | 0.02 M☉ | 11.6 ly |
|
|
Epsion Indi Bb | T6 | 0.05 M☉ | 12 ly |
Enanas marrones
Latest news from Enanas marrones
Massive brown dwarf HD 203771 b confirmed in eccentric orbit around orange dwarf
14. 10. 2026
Estrellas | Exoplanetas | Enana naranja | Enanas marroneThe massive brown dwarf known as HD 203771 b has been characterized as orbiting its host orange dwarf star once every 1140 days. Brown dwarfs are often called failed stars because they are more massive than planets but not heavy enough to sustain the nuclear fusion that powers stars. This particular companion follows an eccentric, or elongated, path that is inclined at an angle of approximately 130 degrees relative to its host. The host star itself has a mass estimated at 0.79 times that of the ...
Advertisement
9. 10. 2026Estrellas | Enanas marrones | Atmósferas planetariAnalysis of three early L-dwarfs, HD 89744 B, Gliese 1048 B, and LSPM J0632+5053 B, reveals gaseous silicon monoxide and silicate clouds in their atmospheres. JWST data confirms these mineral clouds form as silicon gas condenses, mimicking processes in giant planets....
9. 10. 2026Estrellas | Exoplanetas | Enanas marroneA new exoplanet candidate, PALTA-1 b, has been identified orbiting the nearby ultracool dwarf star DENIS-P J1253108-570924. The planet, which has a mass roughly equivalent to a fraction of Jupiter, was found after eight years of precise positional monitoring....
9. 10. 2026Estrellas | Enanas marroneRadio observations of the L3.5 dwarf LSPM J0036+1821 reveal Jupiter-like auroral activity. The star shows a 3.08-hour rotation period and persistent magnetic pulses driven by electron interactions in its magnetosphere....
25. 9. 2026Estrellas | Enanas marrones | Telescopio espacial James Webb | GaiBrown dwarf WISEA J155349.96+693355.2 is the first of its kind linked to the Gaia-Enceladus substructure. JWST data reveals its metal-poor atmosphere and an extreme, eccentric orbit, confirming its origin as an accreted object from an ancient galaxy collision....
Research in Gaia
Explore los últimos estudios científicos sobre estrellas y exoplanetas en nuestra galaxia. Descubra las últimas investigaciones sobre astrofísica y astronomía estelar.
La investigación actual
Publicaciones más antiguas