Stellar catalog: Discover the nearby universe

Domů
česko
Malá Strana
Stellar catalog: Discover the nearby universe

Database of nearby stars and planets in Milky Way. Current news from astronomy and stellar research.

27/06/2025

Frequent microflares from small but active star ⭐️TRAPPIST-1 create strong ultraviolet noise, that hides signs of escaping atmospheres. No clear atmospheres were detected around any of its seven planets with Hubble telescope
📄 https://www.stellarcatalog.com/study.php?studyID=101670

16/06/2025

Signals where transits and star spots cross each other reveal misaligned orbit of exoplanet 🪐TOI-3884 b. This Neptune-mass planet orbits a tilted red dwarf with a long-lived polar starspot, persisting for at least 7 years
📄 https://www.stellarcatalog.com/study.php?studyID=101662

14/06/2025

A radio signal was detected from star system⭐️HD 189733 consisting of two stars and one known exoplanet. Properties of the signal suggest cyclotron maser emission, possibly from 🪐HD 189733 b or stellar activity
📄 https://www.stellarcatalog.com/study.php?studyID=101657

12/06/2025

⭐️TOI-1117 hosts 3 sub-Neptune expolanets. One of them lies in both the Neptunian Desert and Radius Valley - rare orbital positions for planets of this size
📄 https://www.stellarcatalog.com/study.php?studyID=101658

05/06/2025

🪐LP 791-18 d, an Earth-size planet experiencing significant tidal heating, likely has intense volcanic activity. Its atmosphere's stability is strongly influenced by the interior's oxidation state, with highly oxidized scenarios being more stable
📄 https://www.stellarcatalog.com/study.php?studyID=101647

03/06/2025

The atmosphere of ultra-hot Jupiter🪐WASP-178 b modeled with new precision reveals complex temperature structure. The advanced modeling shows excellent agreement with NUV observations, contrasting previous results
📄 https://www.stellarcatalog.com/study.php?studyID=101644

03/06/2025

Abundant carbon, silicon, and oxygen in 🪐WASP-121 b’s atmosphere suggest formation with rock debris and dynamic chemistry
📄 https://www.stellarcatalog.com/study.php?studyID=101643

02/06/2025

Spectrum of low-density exoplanet🪐Kepler-51 d shows a featureless slope - pointing to either hazy low-metallicity skies or a tilted ring system around the planet
📄 https://www.stellarcatalog.com/study.php?studyID=101639

02/06/2025

Hot, rocky exoplanet🪐Gliese 357 b shows no strong atmospheric features yet, but high escape velocity + low stellar activity hint it may retain a secondary atmosphere. Further observation might show more
📄 https://www.stellarcatalog.com/study.php?studyID=101635

31/05/2025

🪐TOI-2285 b orbits its star every 13.64 days, not 27 as previously thought - making it a warmer sub-Neptune at 358 K. A possible 1.5 🜨 companion was also detected at 9.67 -day orbit
📄 https://www.stellarcatalog.com/study.php?studyID=101633

22/05/2025

TESS spotted 17 229 flares on 173 M dwarf ⭐️stars within 33 light years. Brighter stars flare more often at lower energies; fainter ones less often but more energetically
📄 https://www.stellarcatalog.com/study.php?studyID=101630

21/05/2025

A 3-5 Jupiter-mass candidate 🪐planet spotted 730 AU from a young binary star ⭐️⭐️2MASS J1006-6352. If confirmed, its wide orbit defies core accretion theory, it could reshape how we think gas giants form
https://www.stellarcatalog.com/study.php?studyID=101626

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