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Étoiles de type solaire
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Étoiles de type solaire

Les étoiles de type solaire sont des naines jaunes de la série principale. Imaginez notre système solaire comme un modèle standard : ces étoiles ont une masse, une température et une luminosité similaires à celles de notre Soleil. Dans leur noyau, la fusion thermonucléaire de l'hydrogène en hélium se produit, offrant une stabilité pendant des milliards d'années. Ce sont des candidates idéales pour la recherche de planètes habitables car elles fournissent une source constante d'énergie et de chaleur, tout comme le moteur au centre de notre foyer. Leur température de surface se situe entre 5 000 et 6 000 degrés Celsius.
  • Percentage of Étoiles de type solaire within 98.5 années lumière: 4.11 % (391 from 9520 stars)
  • Average masse of Étoiles de type solaire: 80-120% solar mass
  • Average rayon of Étoiles de type solaire: 80-120% solar radius
  • Average température of Étoiles de type solaire: 5200-6000 K

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Latest news from Étoiles de type solaire

Thick-disk stars identified as hosts to ancient hot jupiter planets
icon16. 10. 2026
iconÉtoiles | Exoplanètes | Étoiles de type solaire | Jupiter chaud | Formation des planète
Image: Thick-disk stars identified as hosts to ancient hot jupiter planets
Large gas giant planets that orbit very close to their parent stars are known as hot Jupiters. By analyzing a sample of 268 stars, researchers have identified several hot Jupiters orbiting stars belonging to the high-alpha thick disk of our galaxy. The thick disk represents a component of the Milky Way containing older stars with specific chemical signatures, particularly higher amounts of alpha elements like magnesium, silicon, and calcium relative to iron. These systems are significantly older...
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Atmospheric differences between morning and evening sides of planet WASP-39 b revealed
icon12. 10. 2026
iconÉtoiles | Exoplanètes | Étoiles de type solaire | Jupiter chaud | Atmosphères planétaire
Image: Atmospheric differences between morning and evening sides of planet WASP-39 b revealed
Observations of the hot Jupiter WASP-39 b reveal significant differences between its morning and evening atmospheres. Climate models successfully match temperature patterns but still struggle to explain the observed asymmetry in carbon dioxide levels....
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Water vapor detected in the atmosphere of ultrahot Neptune LTT 9779 b
icon9. 10. 2026
iconÉtoiles | Exoplanètes | Étoiles de type solaire | Atmosphères planétaire
Image: Water vapor detected in the atmosphere of ultrahot Neptune LTT 9779 b
New observations of the ultrahot Neptune LTT 9779 b reveal the presence of water vapor on its dayside. The planet shows no signs of thermal inversion or significant atmospheric escape, supporting the theory that it is a tidally locked world....
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Leave-one-out cross-validation provides clarity in radial velocity measurements of exoplanetary systems
icon7. 10. 2026
iconÉtoiles | Exoplanètes | Étoiles de type solaire
Image: Leave-one-out cross-validation provides clarity in radial velocity measurements of exoplanetary systems
New statistical analysis refines planetary data. By checking the influence of individual measurements, researchers revised the mass of HD 119130 b, clarified the orbit of Gliese 4276, and confirmed the three-planet system orbiting Gliese 357....
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Improved atmospheric analysis of WASP-39 b using radius-augmented data processing
icon5. 10. 2026
iconÉtoiles | Exoplanètes | Étoiles de type solaire
Image: Improved atmospheric analysis of WASP-39 b using radius-augmented data processing
New research shows that the atmospheric analysis of WASP-39 b was limited by missing radius data. By incorporating the planet's radius into models, researchers have achieved a highly accurate fit for James Webb Space Telescope data. #Exoplanets #WASP39b #JWST...
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