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Stellar Brief: 22. 10. 2026
A young, planet-hosting star called V1298 Tauri is showing how fiercely active infant planetary systems can be: radio emissions appeared in 90 percent of monitoring visits, while its X-ray brightness also changed and showed a stellar flare.
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5. 10. 2026
Sterne | Exoplaneten | Sonnähnliche SterneModern planetary science relies heavily on advanced simulations to interpret the light signatures collected by observatories like the James Webb Space Telescope. These simulations often use a method called amortized simulation-based inference, which is designed to identify the atmospheric conditions of distant worlds. However, this process has faced significant challenges when applied to real data, often producing results that do not align with physical reality. In the case of the exoplanet WASP...
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5. 10. 2026Sterne | Exoplaneten | Sonnähnliche Sterne | GaiThe planetary system orbiting the star HD 65216 contains at least two giant planets moving on elongated, eccentric orbits. By combining radial velocity data, which measures the subtle wobbling motion of a star caused by the gravitational tug of orbiting planets, with astrometric measurements, which track the star's precise movement across the sky, researchers have updated the physical characteristics and orbital paths of these massive worlds....
Read article 5. 10. 2026Sterne | ExoplaneteThe TOI-1408 system is known to host two planets in a 2:1 orbital resonance - meaning the inner planet completes two orbits for every one orbit of the outer planet - alongside a distant companion. A recent study of TESS space telescope data and ground-based observations has reassessed the system's configuration, finding that current measurements of the planets are influenced by complex factors in the data modeling.
Researchers found that the l...
Read article 4. 10. 2026Sterne | Exoplaneten | Sonnähnliche SterneThe Kepler-51 system contains planets with extremely low bulk densities, often described as super-puff planets. These worlds are so light for their size that they challenge current models of how planets are built. One theory suggests these planets may actually have hidden ring systems that make them appear larger than they are, thereby causing researchers to underestimate their true density. This study uses a method called asterodensity profiling...
Read article 3. 10. 2026Sterne | Exoplaneten | Orangefarbener Zwerg | James-Webb-Weltraumteleskop | PlanetenatmosphäreEpsilon Indi Ab is a temperate super-Jupiter orbiting the star Epsilon Indi A. As one of the closest and coldest directly imaged exoplanets, it serves as a bridge for comparing the atmospheric properties of hot gas giants found around other stars with the cooler giants of our own solar system. Infrared observations have now successfully mapped the chemical makeup of its atmosphere despite the challenging light interference from its host star.
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Read article 3. 10. 2026Sterne | Exoplaneten | Sonnähnliche Sterne | James-Webb-Weltraumteleskop | PlanetenatmosphäreLTT 9779 b is an ultrahot Neptune-sized exoplanet that occupies a rare region of space known as the hot Neptune desert, where such planets are seldom found. Despite its intense exposure to radiation from its host star, LTT 9779 b possesses a confirmed atmosphere. A new comprehensive study using data from the James Webb Space Telescope provides a detailed look at the chemical and physical characteristics of this exotic world's atmosphere.
By an...
Read article 3. 10. 2026Sterne | ExoplaneteOuter giant planets play a critical role in the development of planetary systems, yet their long orbital paths make them challenging to observe through traditional methods. By analyzing astrometric data from the Hipparcos and Gaia space missions, researchers have identified 29 candidate planets located far from their host stars. These findings suggest the presence of massive companions orbiting beyond the previously known planets in these systems...
Read article 3. 10. 2026Sterne | Exoplaneten | Rote Zwerge | James-Webb-Weltraumteleskop | PlanetenatmosphäreRocky planets orbiting Red dwarf stars present a unique challenge for observers because the stars themselves often have active surfaces that can mimic the signals of an atmosphere. A new analysis method has been developed to separate these stellar signals from potential atmospheric data. By applying this technique to four observations of the planet TRAPPIST-1 c, researchers have determined that the planet does not show evidence of a significant, ...
Read article 3. 10. 2026Sterne | Exoplaneten | ALMA | Planetenentstehung | Orangefarbener ZwerEpsilon Eridani, a nearby orange dwarf star located about 10.5 light-years away, hosts the closest known debris disk - a ring of dust and icy rocks orbiting the star. This system also features a large planet, Epsilon Eridani b, which is similar to Jupiter. New measurements of the outer debris belt suggest it is remarkably circular and dynamically cold, meaning the particles within it have very orderly, stable orbits.
To determine the shape of ...
Read article 30. 9. 2026Sterne | Exoplaneten | James-Webb-Weltraumteleskop | Planetenatmosphären | Sonnähnliche SterneLTT 9779 b is a Neptune-sized planet that orbits extremely close to its parent star, placing it within the so-called hot Neptune desert - a region where such planets are rarely found due to intense stellar radiation. Observations of this planet are essential to understanding how its atmosphere manages to persist under these extreme conditions. New data from the James Webb Space Telescope provides a broad look at the chemical and physical characte...
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Neu entdeckte Exoplaneten
| EK Chamaeleontis b | 10 / 2026 | 2702.2 M⊕ | 321.3 ly | |
| HD 715 b | 10 / 2026 | 201.9 M⊕ | 542.8 ly | |
| DENIS J1253-5709 b | 10 / 2026 | 244.8 M⊕ | 54.4 ly | |
| L 115-21 b | 10 / 2026 | 0.4 M⊕ | 41.9 ly | |
| TIC 219893931 b | 09 / 2026 | 8.9 M⊕ | 1319.5 ly | |
| TOI-6417 b | 09 / 2026 | 349.7 M⊕ | 1903.9 ly | |
| TOI-6443 b | 09 / 2026 | 1605.4 M⊕ | 2051.6 ly | |
| TOI-7219 b | 09 / 2026 | 661 M⊕ | 1074.2 ly | |
| TOI-4079 B b | 09 / 2026 | 1646.8 M⊕ | 1185.6 ly | |
| HD 45652 b | 09 / 2026 | 1557.7 M⊕ | 113.9 ly | |
| LSPM J0804+1116 b | 09 / 2026 | 6.4 M⊕ | 82.6 ly | |
| HR 8799 f | 09 / 2026 | 524.5 M⊕ | 133.3 ly | |
| 61 Cygni A b | 09 / 2026 | 2543.3 M⊕ | 11.4 ly | |
| TOI-5646 b | 08 / 2026 | 45.9 M⊕ | 1352.3 ly | |
| TOI-4468 c | 08 / 2026 | 11.1 M⊕ | 1233.1 ly |
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