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Bílí trpaslíci
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Bílí trpaslíci

Bílí trpaslíci jsou horká, nesmírně hustá jádra hvězd, která zbyla poté, co hvězdy jako naše Slunce vyčerpaly své palivo. Představte si, že byste hmotu celého Slunce stlačili do objemu naší Země; výsledkem by byl objekt tak hustý, že lžička jeho hmoty by vážila tuny. V naší sluneční soustavě Slunce jednou také odhodí své vnější vrstvy a stane se bílým trpaslíkem, zářivým pozůstatkem velikosti planety, který pomalu chladne v prázdnotě. Tato tělesa představují konečné stadium vývoje většiny hvězd a ukazují nám budoucí osud našeho vlastního systému. 
  • Percentage of Bílí trpaslíci within 98.5 světelné roky: 4.93 % (469 from 9522 stars)
  • Average hmotnost of Bílí trpaslíci: 20-140% solar mass
  • Average radius of Bílí trpaslíci: 0.7-1.5% solar radius
  • Average teplota of Bílí trpaslíci: 5000-150000 K

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Latest news from Bílí trpaslíci

Evaporating planet explains gaseous disk formation around white dwarf WD J0914+1914
icon9. 8. 2026
iconHvězdy | Exoplanety | Bílí trpaslíci
Image: Evaporating planet explains gaseous disk formation around white dwarf WD J0914+1914
The white dwarf WD J0914+1914 is surrounded by a ring of gas containing hydrogen, oxygen, and sulfur. This material originates from a nearby Neptune-like or super-puff planet—a planet with a very low density—that is losing its atmosphere due to intense radiation from the star. The escaping gas forms a disk around the star, which is then slowly pulled onto the white dwarf's surface, creating the unique light signals observed by instruments. Advanced simulations were used to model the atmos...
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Wide-orbit stellar companions influence formation of giant planets around Red dwarf stars
icon1. 8. 2026
iconHvězdy | Exoplanety | TESS | Červení trpaslíci | Vznik planet | Bílí trpaslíci
Image: Wide-orbit stellar companions influence formation of giant planets around Red dwarf stars
The giant planet TOI-5628Ab orbits a Red dwarf star every 4.34 days. Observations reveal that Red dwarfs with close-in giant planets are 6 times more likely to have a distant stellar companion, suggesting these neighbors influence planetary migration....
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Atmosphere of planet WD 1856 b contains hydrocarbons and aerosols
icon5. 7. 2026
iconHvězdy | Exoplanety | Atmosféry planet | Bílí trpaslíci
Image: Atmosphere of planet WD 1856 b contains hydrocarbons and aerosols
The atmosphere of planet WD 1856 b, orbiting a white dwarf star, contains hydrocarbons and aerosols. Data from the James Webb Space Telescope reveal the planet is significantly warmer than expected, pointing to a past reheating event during its orbital migration....
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Nova eruption of RS Ophiuchi in 2021 generated million-degree gas and transformed the companion red giant
icon8. 3. 2026
iconHvězdy | Bílí trpaslíci | Obři
Image: Nova eruption of RS Ophiuchi in 2021 generated million-degree gas and transformed the companion red giant
RS Ophiuchi’s 2021 nova eruption was tracked in near-infrared light, revealing million-degree coronal gas and possible changes in the red giant star’s type after the event....
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Secondary star in omicron Ceti (Mira B) might be a very low mass white dwarf
icon1. 3. 2026
iconBílí trpaslíci | Hvězdy
Image: Secondary star in omicron Ceti (Mira B) might be a very low mass white dwarf
Mira B is likely an extremely low-mass white dwarf, accreting material via Wind Roche Lobe Overflow. Photometric data reveal short-term variability and support a mass of just 0.24 solar masses. #Astrophysics #WhiteDwarfs...
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