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Astronomical research on stellar and brown dwarf properties
Overview
Astronomers have introduced new methodologies for studying stellar and sub-stellar objects. One approach involves analyzing chemical compositions, specifically beryllium and lithium levels, to identify stars that have consumed orbiting planets. A team led by the University of São Paulo utilized these differences to detect planetary matter ingestion; specifically, studying the binary star system HD 129171 revealed an excess of refractory elements and beryllium, suggesting the star absorbed rocky material exceeding 11 Earth masses. Simultaneously, researchers have utilized James Webb Space Telescope (JWST) data to analyze the atmospheric conditions of distant celestial objects. By applying Principal Component Analysis (PCA) to data from the Near-Infrared Spectrograph and Mid-Infrared Instrument, teams identified recurring weather patterns in the brown dwarf SIMP 0136, located approximately 20 light-years away. Researchers from Trinity College Dublin found that the object's atmosphere undergoes cyclic changes driven by temperature fluctuations and vertical cloud structures, creating three recurring weather patterns where hotter regions feature thinner clouds and cooler regions host thicker, higher-altitude cloud layers. Further JWST observations expanded to GJ 504 b, a pink-hued object approximately 57 light-years away, where models suggest clouds composed of manganese sulfide and potassium chloride. Recent JWST observations have also focused on WISE 0855, the coldest known brown dwarf, located approximately 7.5 light-years from Earth. A research team from the University of Arizona’s Steward Observatory conducted 11 hours of continuous spectroscopic observations to monitor the object. The study revealed that high-altitude water clouds thicken and dissipate as the object rotates, driven by both rotation and internal heat. Researchers also detected rhythmic changes in carbon monoxide and phosphine rising from the interior, a process described as being “similar to a lava lamp.”
Entities
James Webb Space Telescope · WISE 0855 · University of Arizona · NASA · Brittany Miles
Timeline
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[TECHNOLOGY] 3 sourcesJames Webb Space Telescope reveals rogue black hole and cold brown dwarf
James Webb Space Telescope observations confirm a rogue supermassive black hole leaving a massive trail of stars and provide new data on the ultra-cold brown dwarf WISE 0855.
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[TECHNOLOGY] 4 sourcesJames Webb Telescope detects water clouds on brown dwarf WISE 0855-0714
The James Webb Space Telescope has confirmed the presence of fluctuating water clouds in the atmosphere of the nearby brown dwarf WISE 0855-0714.
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[TECHNOLOGY] 2 sourcesWISE 0855 shows evidence of evolving water clouds
Observations from the James Webb Space Telescope suggest the brown dwarf WISE 0855 possesses an atmosphere with evolving water clouds, offering new insights into celestial objects beyond our solar system.
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[TECHNOLOGY] 2 sourcesJames Webb Space Telescope detects variable water clouds on brown dwarf
The James Webb Space Telescope has identified variable water clouds on the brown dwarf WISE 0855, revealing atmospheric changes in thickness and detecting gases like carbon monoxide and phosphine.
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[TECHNOLOGY] 3 sourcesJames Webb Space Telescope reveals atmospheric patterns on SIMP 0136
Researchers using the James Webb Space Telescope have identified three recurring atmospheric states on the object SIMP 0136, revealing organized weather patterns beneath its turbulent atmosphere.
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[TECHNOLOGY] 4 sourcesJames Webb Telescope detects changing weather on brown dwarf WISE 0855
Using the James Webb Space Telescope, astronomers have observed changing water clouds and weather patterns on the nearby brown dwarf WISE 0855, marking a first in extrasolar meteorology.
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[TECHNOLOGY] 2 sourcesJames Webb Space Telescope detects shifting water clouds on brown dwarf
Using the James Webb Space Telescope, astronomers have confirmed the presence of shifting water clouds on the cold brown dwarf WISE 0855, marking the first direct observation of such weather patterns.
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[TECHNOLOGY] 5 sourcesJames Webb Space Telescope detects changing water clouds on brown dwarf
The James Webb Space Telescope has detected fluctuating water clouds on WISE 0855, a cold brown dwarf located 7.5 light-years away, revealing active weather patterns on a Jupiter-sized object.
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[TECHNOLOGY] 2 sourcesAstronomers observe unusual shock waves and distant weather patterns
Astronomers discover a long-lasting shock wave around white dwarf RXJ0528+2838 and develop a new method to track weather patterns on the distant brown dwarf SIMP 0136.
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[TECHNOLOGY] 2 sourcesJames Webb Space Telescope reveals atmospheric patterns in distant worlds
James Webb Space Telescope data reveals recurring weather patterns on the brown dwarf SIMP 0136 and suggests the presence of salt-based clouds in the atmosphere of the pink object GJ 504 b.
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[TECHNOLOGY] 2 sourcesJames Webb Space Telescope reveals weather on brown dwarf SIMP 0136
Researchers using the James Webb Space Telescope have identified recurring weather patterns on the brown dwarf SIMP 0136, driven by temperature changes and cloud structures.
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[TECHNOLOGY] 4 sourcesAstronomers develop new methods to detect consumed planets and analyze brown dwarf weather
Astronomers have identified a new method to detect stars that consumed planets via chemical signatures and analyzed the cyclic, Jupiter-like weather patterns of the brown dwarf SIMP 0136.
Sources
arynews.tv · borba.me · conowego.pl · demokrata.hu · dominicanaaldia.com · fakti.bg · finance.technews.tw · forbes.com.br · forbesliberia.com · geekweek.interia.pl · gry-online.pl · interestingengineering.com · knowridge.com · merca2.es · meteored.cl · mokslolietuva.lt · naukawpolsce.pap.pl · negarmag.com · ng.24.hu · oantagonista.uol.com.br · origo.hu · perfil.com · politika.rs · rokna.net · tech.everyeye.it · tech.wp.pl · tecnoandroid.it · tempo.pt · theweather.com · theweather.net · timesng.com · universeToday.com · ve.lt · world-today-journal.com · xataka.com
This summary has been updated 9 times: see revision history