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Riesen
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Riesen

Sternenriesen sind mehr als nur große Sterne; sie repräsentieren verschiedene Lebensstadien. Blaue Riesen sind jung und massereich, mit Temperaturen über 10.000 K, und leuchten heller als zehntausend Sonnen. Gelbe Riesen wie Capella sind ein kurzer Übergang, so als ob sich unsere Sonne aufblähen und ihre Farbe ändern würde. Rote Riesen sind Sterne im Alter, die ihren Wasserstoff verbraucht haben und so expandieren, dass sie die inneren Planeten unseres Systems verschlucken würden. Während unsere Sonne wie ein Tennisball ist, können diese Riesen so groß wie ein Haus sein. Ihre Farbe hängt direkt mit der Temperatur zusammen: Blau ist am heißesten, Rot am kühlsten. Dieses Wachstum ist ein Schritt der Evolution.
  • Percentage of Riesen within 98.5 lichtjahre: 0.46 % (44 from 9522 stars)
  • Average masse of Riesen: 50-300% solar mass
  • Average radius of Riesen: 500-20000% solar radius
  • Average temperatur of Riesen: 3000-5000 K

exoplanet iconRiesen

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study icon Riesen

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Sternname Masse Entfernung

Pollux
β Geminorum, 78 Geminorum, BD+28°1463, GCTP 1826.00, Gliese 286, GJ 286, HD 62509, HIP 37826, HR 2990, LFT 548, LHS 1945, LTT 12065, SAO 79666, * bet Gem
 K0IIIb 1.9 M☉ 33.8 ly

Arcturus
* alf Boo, Alpha Boötis, Alramech, Abramech, α Boötis, 16 Boötis, BD+19°2777, GJ 541, Gliese 541, HD 124897, HIC 69673, HIP 69673, HR 5340, SAO 100944, LHS 48, GCTP 3242.00
 K1.5IIIFe-0.5 1.1 M☉ 36.7 ly

Delta Capricorni Aa
Deneb Algedi, Deneb Algiedi, Scheddi, δ Cap, Del Cap, 49 Capricorni, BD−16 5943, FK5 819, GJ 837, HD 207098, HIP 107556, HR 8322, SAO 164644, ADS 15314, WDS 21470-1608
 A7m III 2 M☉ 38 ly

Delta Capricorni Ab
 - 38 ly

Capella Aa
13 Aur, ANJ 1, FRH 1A, ADS 3841 AP, CEL 586, 2E 1239, FK5 193, GJ 194, Gliese 194, HD 34029, HIC 24608, HIP 24608, HR 1708, JP11 1010, LSPM J0516+4559, LTT 11619, 2MASS J05164138+4559525, N30 1121, NLTT 14766, NSV 1897, SBC7 214, TIC 368326352, TYC 3358-3141-1, UBV 5009, VVO 236, YPAC 23, Alhajoth, Hokulei, α Aurigae, 13 Aurigae, Capella, Alpha Aurigae
 G3III: 2.6 M☉ 43.5 ly
Riesen

Latest news from Riesen

Twenty-nine giant planets confirmed around bright stars using TESS data
icon5. 10. 2026
iconSterne | Exoplaneten | TESS | Riese
Image: Twenty-nine giant planets confirmed around bright stars using TESS data
The study presents the characterization of 29 new giant planets, often categorized as hot or warm Jupiters due to their massive size and proximity to their host stars. These planets were identified as they transited—or passed in front of—their host stars, which are bright stars similar in type to our Sun (specifically FGK-type stars). In addition to confirming these 29 worlds, the analysis identified three previously unknown bound stellar companions, specifically TOI-3988 B, TOI-6171 B, and ...
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Astrometric data reveals 29 distant giant planet candidates in known planetary systems
icon5. 10. 2026
iconSterne | Exoplaneten | Riese
Image: Astrometric data reveals 29 distant giant planet candidates in known planetary systems
Astrometric analysis of Gaia and Hipparcos data has revealed 29 outer giant planet candidates in known exoplanetary systems. These distant companions, with orbits beyond 8.4 astronomical units, offer new insights into the dynamical evolution of planetary systems....
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Outer giant planet in Pi Mensae system influences the orbit of planet d
icon9. 9. 2026
iconSterne | Exoplaneten | Riese
Image: Outer giant planet in Pi Mensae system influences the orbit of planet d
The Pi Mensae system reveals how an outer giant planet shapes its neighbor. New analysis confirms planet d follows a highly elongated orbit, maintained by the long-term gravitational influence of the massive giant planet b in the same system....
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Ultra-hot super Neptune orbiting the subgiant star TOI-5646 is a desert survivor
icon31. 8. 2026
iconSterne | Exoplaneten | TESS | Riesen | Unterriese
Image: Ultra-hot super Neptune orbiting the subgiant star TOI-5646 is a desert survivor
An ultra-hot super Neptune, TOI-5646b, has been confirmed orbiting the subgiant star TOI-5646. As a rare resident of the Neptune desert, it has lost up to 16 percent of its mass due to intense radiation, highlighting a unique and violent planetary history....
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Simulations show how planets accrete stellar wind from aging stars and may become detectable
icon20. 3. 2026
iconSterne | Exoplaneten | Riese
Image: Simulations show how planets accrete stellar wind from aging stars and may become detectable
Simulations reveal that planets orbiting aging stars can accrete stellar wind, boosting their brightness and making them easier to detect around red giants....
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study iconResearch in Riesen

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Durchsuchen Sie die neuesten wissenschaftlichen Studien zu Sternen und Exoplaneten in unserer Galaxie. Entdecken Sie die neuesten Forschungsergebnisse zur Astrophysik und Sternastronomie.
Aktuelle Forschung

 TOI-4079
1186 ly
 +5 study icon Migration and Evolution of giant ExoPlanets (MEEP). III. Twenty-Nine Giant Planets from the TESS Mission
5. 10. 2026

HD 45652
114 ly
 study icon Astrometric Evidence for Outer Giant Planets in Known Exoplanet Systems
5. 10. 2026

Pi Mensae
59.6 ly
 study icon An Outer Giant Excites and Constrains the Orbit of π Mensae d
9. 9. 2026

TOI-5646
1352 ly
 study icon The Hot Neptune Initiative (HONEI) III. An ultra-hot super Neptune orbiting the metal-rich subgiant star TOI-5646: the largest host for a desert dweller
31. 8. 2026

HD 219415
540 ly
 study icon Wind accretion onto planets orbiting an evolving Solar-like star and their detectability
20. 3. 2026
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