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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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Latest astronomy noticias
4. 3. 2026
Exoplanetas | Objetos estelares jóvenes | Formación planetaria | Estrellas | Telescopio espacial James WebbTWA 7 is a young star surrounded by a debris disk, which is a ring of dust and small objects left over from planet formation. Recent observations with the JWST telescope have directly imaged a planet far from the star and revealed detailed features in the disk, such as a sharply defined inner edge and an unusual horseshoe-shaped structure. These features suggest that the system's planets are shaping the disk in complex ways.
Researchers used computer simulations and mathematical models to tes...
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3. 3. 2026Estrellas | Exoplanetas | TESS | Enanas rojResearchers have detected and validated TOI-1080 b (SIPS J1825-5212 b), a small, temperate exoplanet that transits its quiet M4V host star every 3.97 days. The host star is located 25.6 parsecs away. The planet was first identified by the TESS mission and confirmed with both TESS and ground-based observations. Analysis of the light curves shows that TOI-1080 b has a radius of about 1.2 times that of Earth and an equilibrium temperature of 36...
Read article 3. 3. 2026Estrellas | Exoplanetas | Supertierras | Atmósferas planetariScientists have used high-resolution transmission spectroscopy from the Gemini-South telescope to study the atmosphere of the temperate super-Earth exoplanet L 98-59 d. This approach, typically used for larger and hotter planets, was successfully applied to a smaller, more temperate world, demonstrating the capability of ground-based facilities to characterize super-Earth atmospheres.
The team confirmed the presence of hydrogen sulfide (H2S) i...
Read article 2. 3. 2026Estrellas | Exoplanetas | TESS | Enanas rojResearchers conducted the most comprehensive search for planets around mid-to-late M dwarf stars using data from the TESS mission. Surveying over 8,000 such stars, they identified 77 transiting planet candidates and measured how often planets occur as a function of their size, orbital period, and the amount of starlight they receive. The study found that each mid-to-late M dwarf hosts on average about 1.1 planets larger than Earth within 30 ...
Read article 2. 3. 2026Estrellas | Exoplanetas | Atmósferas planetarias | Telescopio espacial James WebbScientists conducted the most sensitive direct imaging search for the nearby Jupiter-analog exoplanet epsilon Eridani b using the JWST/NIRCam coronagraph between 4 and 5 micrometers. Despite achieving a record-breaking contrast sensitivity at the planet’s expected separation, the planet itself was not directly imaged. The study updated the age of the host star epsilon Eridani to 1.1 billion years, which affects the estimated temperature of t...
Read article 2. 3. 2026Estrellas | Objetos estelares jóveneDO Tauri is a classical T Tauri star, a type of young star still surrounded by a disk of gas and dust. Researchers monitored DO Tau using the SPIRou spectropolarimeter at the Canada-France-Hawaii Telescope between 2020 and 2025, aiming to understand its magnetic activity and accretion processes.
The study detected strong, variable magnetic fields in DO Tau, including a rare magnetic polarity reversal—meaning the star's large-sc...
Read article 1. 3. 2026EstreYY Herculis is a symbiotic star system that has experienced several brightening events over the past century. In 2021, astronomers observed a hot-type outburst in YY Herculis using the Himalayan Chandra telescope, focusing on changes that occur during the system's secondary minimum.
This study monitored YY Herculis from 2021 to 2023, covering one and a half orbital cycles. Researchers analyzed how the temperature and brightness...
Read article 1. 3. 2026Estrellas | Enanas rojM dwarfs are small, cool stars that can become tidally deformed when they are part of close binary systems called cataclysmic variables. These distortions change the stars’ shapes and may affect how their magnetic fields are generated. Studying these effects helps scientists understand stellar dynamos and magnetic activity in stars beyond our Sun.
This study examined the relationship between the magnetic cycle period and the rota...
Read article 1. 3. 2026Enanas blancas | EstreMira, also known as omicron Ceti, is one of the most famous variable stars known since antiquity — a giant red star located about 300 light-years away that brightens and dims over a cycle of roughly 332 days. It is not alone: Mira has a faint companion called Mira B, thought to be a white dwarf, the dense Earth-sized remnant left behind when a Sun-like star exhausts its nuclear fuel. A new study used observations of rapid brightness flickeri...
Read article 1. 3. 2026PICASO 4.0 is a major update to an open-source tool for simulating the atmospheres of brown dwarfs and exoplanets. The new version adds cloud modeling, photochemistry, and energy injection features, helping scientists better understand these distant worlds.
The update is motivated by recent discoveries from the JWST telescope, which revealed complex chemistry and clouds in exoplanet atmospheres. PICASO 4.0 is benchmarked against ...
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Exoplanetas recién descubiertos
| 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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