Tag Archive for 'Brown dwarf binary'

An artist’s impression of the UPM J1040-3551 system against the backdrop of the Milky Way as observed by ESA’s Gaia satellite; on the left, UPM J1040-3551 Aa & Ab appears as a distant bright orange dot, with an inset revealing these two M-type stars in orbit; on the right, in the foreground, a pair of cold brown dwarfs -- UPM J1040-3551 Ba & Bb -- orbit each other for a period of decades while collectively circling UPM J1040-3551 Aab in a vast orbit that takes over 100,000 years to complete. Image credit: Jiaxin Zhong / Zenghua Zhang.

Astronomers Discover Extremely Rare Hierarchical Quadruple System

Aug 19, 2025 by News Staff

Named UPM J1040-3551 AabBab, the newly-discovered quadruple star system consists of a pair of cold brown dwarfs and a pair of young red dwarfs. An artist’s...

This illustration shows an exoplanet orbiting around two brown dwarfs. Image credit: ESO / M. Kornmesser.

Astronomers Discover Polar Circumbinary Exoplanet around Pair of Brown Dwarfs

Apr 23, 2025 by News Staff

The newly-discovered planet orbits at an angle of 90 degrees around 2MASS J15104786-2818174 (hereafter 2M1510), an eclipsing binary composed of two equal-mass...

This artwork highlights a pair of brown dwarfs, named Gliese 229 Ba and Gliese 229 Bb. Image credit: K. Miller / R. Hurt / Caltech / IPAC.

Gliese 229B is Actually Compact Pair of Brown Dwarfs, Astronomers Find

Oct 17, 2024 by News Staff

Gliese 229B was the first known brown dwarf, discovered in 1995. In new research, astronomers observed Gliese 229 B with the GRAVITY interferometer...

At an estimated mass of 5 Jupiter masses, NIRISS-NGC1333-5 (also known as NN5) is a good candidate to be the lowest-mass object found in NGC 1333 thus far and the lowest-mass object with a disk in any region identified to date. Image credit: Langeveld et al., doi: 10.3847/1538-3881/ad6f0c.

Webb Discovers Six Free-Floating Exoplanets in NGC 1333

Aug 27, 2024 by News Staff

Using the Near-Infrared Imager and Slitless Spectrograph (NIRISS) instrument on the NASA/ESA/CSA James Webb Space Telescope, astronomers have discovered...

An artist’s impression of the Roque 12 binary system in the Pleiades cluster. Image credit: Sci-News.com / NASA / ESA / AURA / Caltech.

Astronomers Find Widest-Separation Brown Dwarf Pair to Date

Feb 18, 2022 by Natali Anderson

At an estimated distance of 130.5 light-years, CWISE J014611.20-050850.0AB has a projected separation of 129 AU (astronomical units), or 129 times the...

An artist’s rendering of two brown dwarfs. Image credit: Roberto Molar Candanosa & Sergio Dieterich, Carnegie Institution for Science.

Astronomers Spot Rare Eclipsing Brown-Dwarf Binary System

Mar 10, 2020 by News Staff

Astronomers using robotic telescopes at ESO’s newest planet-hunting SPECULOOS (Search for habitable Planets EClipsing ULtra-cOOl Stars) Observatory in...