Tag

Brown Dwarf

All articles tagged with #brown dwarf

science24 days ago•7 min saved

Astronomers Detect Likely Exomoon Orbiting Brown Dwarf, Blurring Boundaries

An international team using the ESO Very Large Telescope detected a moonlike body orbiting the brown dwarf CD-35 2722 B about 73 light-years away, with a roughly 170-day orbit and a mass of at least 0.9 Jupiter—about 2.5% of the brown dwarf’s mass. Described as an exosatellite rather than a moon, this is the first satellite evidence around a brown dwarf found via the Doppler method, though its exact classification remains under discussion. The discovery challenges traditional moon definitions and could influence theories of planet formation and tidal heating, with future telescopes potentially revealing smaller exomoons.

via WIRED|

#brown-dwarf #doppler-method #exomoon

science28 days ago•40 min saved

Astronomers Signal First Plausible Exomoon, Blurring Moon-Planet Boundaries

Using ESO's VLT CRIRES+ radial-velocity measurements, scientists report strong evidence for an exosatellite (a Jupiter-sized body) orbiting a brown dwarf in the CD-35 2722 system—a three-body setup that challenges Solar System definitions of moon and planet. If confirmed, it would be the first plausible exomoon detection and could accelerate future exomoon searches, though the terminology remains debated.

via Good News Network|

#astronomy #brown-dwarf #cd-35-2722

science1 month ago•7 min saved

Possible exomoon spotted around a brown dwarf, sparking naming debate

Astronomers using the Very Large Telescope report evidence for a moon-sized object orbiting a brown dwarf in the CD-35 2722 system, an exosatellite that defies simple labeling as either moon or planet; detected via radial-velocity wobble rather than transit, this may mark the first exomoon, with confirmation likely from future observations with the ELT.

via Boing Boing|

#brown-dwarf #exomoon #exosatellite

space1 month ago•9 min saved

Astronomers spot a moon-like world around a brown dwarf, hinting at the first exosatellite beyond our solar system

Astronomers report what could be the first plausible detection of an exosatellite—a planet-mass body orbiting a substellar companion around a brown dwarf rather than a star—found by watching tiny wobbles in the brown dwarf; if confirmed, it would expand our understanding of moons beyond our solar system and was described in a Nature paper.

via The Independent|

#astronomy #brown-dwarf #exoplanet

space-and-astronomy1 month ago•49 min saved

First Exomoon Detected: Jupiter-Mass Moon Orbits a Brown Dwarf

Astronomers have identified the first known exomoon—a Jupiter-mass satellite orbiting a brown dwarf (CD-35 2772) about 71 light-years away—discovered via radial velocity measurements, challenging how we classify planets and moons and signaling more exomoon hunts with the forthcoming ELT.

via Yahoo|

#brown-dwarf #eso #exomoon

science1 month ago•22 min saved

Doppler-detected exosatellite around a brown-dwarf companion

Astronomers using high-resolution infrared radial-velocity measurements from VLT/CRIRES+ detected a periodic signal indicating a planetary-mass exosatellite orbiting CD-35 2722 B, a directly imaged brown-dwarf companion to a star. The best-fit model suggests the satellite has a minimum mass of about 0.9 Jupiter masses with an orbital period of roughly 170 days, marking the first evidence of a satellite around a companion brown dwarf and the first time this RV approach has been used to probe exosatellites. It remains uncertain whether this object meets the formal criteria for an exomoon, but the result demonstrates a promising path toward unambiguous exomoon detections as instrumentation advances; data and code are publicly available.

via Nature|

#astronomy #brown-dwarf #exomoon

space1 month ago•105 min saved

Weird exomoon candidate sparks debate on what counts as a moon

Astronomers analyzing the CD-35 2722 system, about 73 light-years away, report a moon‑like object orbiting a brown dwarf—an finding that could be the first exomoon or a case that forces a redefinition of what counts as a moon versus a planet. While the object is clearly moon‑like, the team stresses a definitive exomoon claim would require redefining established terms, since it orbits a body that itself orbits a star. The discovery, published in Nature, underscores the diversity of planetary systems and may be clarified further with observations from the upcoming Extremely Large Telescope (ELT).

via Space|

#astronomy #brown-dwarf #cd-35-2722

space2 months ago•95 min saved

Brown Dwarf Skews Exoplanet System, Rewriting Planet-Formation Tales

Astronomers using TESS uncover an improbable exoplanet system around TOI-201: a massive brown dwarf TOI-201 c on a long, highly eccentric 2,881‑day orbit coexisting with a warm Jupiter (TOI-201 b) and a rocky super‑Earth (TOI-201 d). The brown dwarf’s gravity reshapes the inner disk, forcing planets to form at the hot inner edge and causing pronounced transit timing variations during close approaches. Mass confirmation marks TOI-201 c as a rare long‑period transiting brown dwarf, and the findings—published in Nature—challenge standard gas‑giant formation models.

via Space|

#brown-dwarf #exoplanets #space

space2 months ago•96 min saved

JWST uncovers salty clouds on the cold Pink Planet GJ504b

Using the James Webb Space Telescope, astronomers detected salt clouds in the atmosphere of GJ504b, a cold, planetary‑mass companion orbiting a Sun‑like star about 57 light‑years away. With a mass around 25 Jupiter masses and an age of roughly 2.5–4 billion years, the object may be a planet or a brown dwarf, and the salty clouds help explain its atmospheric spectrum and raise questions about its origin.

via Space|

#brown-dwarf #exoplanets #gj504b

space5 months ago•5 min saved

Milky Way Runaway: 1-Million-MPH Hypervelocity Object Identified by Citizen Scientists

Citizen scientists in NASA's Backyard Worlds project identified CWISE J124909.08+362116.0 traveling at about 1 million miles per hour, fast enough to escape the Milky Way. Its nature is unclear, likely a brown dwarf or low-mass star, possibly ejected by a white-dwarf supernova or a close encounter in a globular cluster. The discovery, reported in Astrophysical Journal Letters, underscores the power of crowdsourced science using NASA's WISE data.

via The Daily Galaxy|

#astronomy #brown-dwarf #citizen-science

science9 months ago•4 min saved

James Webb Reveals Unprecedented Weather Patterns on Distant Brown Dwarf

Using the James Webb Space Telescope, scientists studied the complex, chaotic weather of SIMP 0136, a brown dwarf 20 light-years away, revealing layered, turbulent atmospheres with dynamic cloud formations and vertical mixing, providing insights into atmospheric processes on similar exoplanets.

via ZME Science|

#atmospheric-dynamics #brown-dwarf #exoplanet-weather

science10 months ago•6 min saved

JWST Reveals Auroras and Storms on Sunless Rogue Planet

The James Webb Space Telescope has provided the first detailed weather report of the rogue world SIMP-0136, a brown dwarf about 20 light-years away, revealing stable clouds and intense auroras heating its upper atmosphere, with potential storm systems causing minor temperature fluctuations.

via Space|

#atmospheric-weather #auroras #brown-dwarf

science10 months ago•3 min saved

JWST Reports Stormy, Aurora-Covered Sunless World

Using the James Webb Space Telescope, astronomers have observed the first detailed weather report of a nearby rogue world, SIMP-0136, revealing stormy conditions and auroras caused by a strong magnetic field, providing new insights into the atmospheres of worlds beyond our solar system.

via Yahoo|

#auroras #brown-dwarf #exoplanet-weather

science11 months ago•7 min saved

Cosmic Discoveries Unveil Hidden Chemistry of Giant Planets

A rare brown dwarf nicknamed 'The Accident' has provided the first detection of silane, a silicon-based molecule, revealing new insights into the atmospheric chemistry of giant planets and brown dwarfs, and suggesting that the early universe had less oxygen, allowing silicon to bond with hydrogen instead.

via SciTechDaily|

#brown-dwarf #james-webb-space-telescope #planetary-atmospheres

science11 months ago•5 min saved

NASA and Astronomers Uncover Rare Space Molecule and Celestial Mysteries

A NASA study using the James Webb Space Telescope discovered silane in a peculiar brown dwarf called 'The Accident,' shedding light on the elusive presence of silicon compounds in Jupiter and Saturn's atmospheres and offering insights into planetary chemistry and formation history.

via NASA (.gov)|

#brown-dwarf #james-webb-space-telescope #nasa