Tag Archive for 'Low-mass star'

An artist’s illustration of TOI-6894b behind its host star. Image credit: Mark Garlick / University of Warwick.

Giant Exoplanet Found Orbiting Low-Mass Star TOI-6894

Jun 4, 2025 by News Staff

The discovery of TOI-6894b — an exoplanet around 86% the size of Jupiter in orbit around a 0.2-solar-mass red dwarf — highlights the need for...

An artist’s impression of a super-Neptune exoplanet orbiting a low-mass star near the center of our Milky Way Galaxy. Image credit: NASA / JPL-Caltech / R. Hurt, Caltech-IPAC.

Astronomers May Have Discovered Fastest-Moving Exoplanet System Ever Seen

Feb 11, 2025 by News Staff

The candidate planetary system, detected with the microlensing method, is thought to move at least 540 km per second (1.2 million mph). An artist’s impression...

This is an artist’s impression of a young star surrounded by a disk of gas and dust. Image credit: NASA / JPL.

Webb Detects Abundant Hydrocarbons in Protoplanetary Disk around Very-Low-Mass Star

Jun 6, 2024 by News Staff

Very-low-mass stars host orbiting rocky exoplanets more frequently than other types of stars. The compositions of those planets are largely unknown but...

An artist’s impression of the giant exoplanet Kepler-1704b. Image credit: Sci-News.com.

Neptune-Mass Exoplanet around Ultracool Dwarf Star Challenges Current Theories of Planet Formation

Nov 30, 2023 by Natali Anderson

Current theories predict that low-mass stars should rarely host planets with masses exceeding that of Neptune (17 Earth masses). An artist’s impression...

In a few million years, HD 45166 will explode as a very bright, but not particularly energetic, supernova. During this explosion, its core will contract, trapping and concentrating the star’s already daunting magnetic field lines. The result will be a neutron star with a magnetic field far greater than its progenitor. Image credit: NOIRLab / AURA / NSF / P. Marenfeld / M. Zamani.

Highly Unusual Wolf-Rayet Star Will Evolve into Magnetar, Astronomers Say

Aug 17, 2023 by News Staff

Using spectropolarimetric data gathered by various telescopes around the globe, astronomers from the University of Amsterdam and elsewhere have identified...

The left panel shows a three-color composite mosaic of NGC 346 combining Webb’s F277W (blue), F335M (green) and F444W (red) filters. The region is rich in structures of knots, arcs and filaments. Areas of bright pink and/or red emission are associated with clumpy star formation. The spatially resolved PAH emission excited by ultraviolet photons in green is brightest in regions corresponding to the edges of dense material, characteristic of a photodissociation region. Massive stars, stars belonging to the BS90 cluster (circled in green) and the Small Magellanic Cloud field population are also visible. The right panel shows a mosaic image from the F335M filter showing four different populations of stars: pre-main-sequence stars (blue circles), young stellar objects with Paα (orange diamonds), young stellar objects without Paα (red squares) and stars matched with the HST-PMS catalogue (purple stars). Image credit: Jones et al., doi: 10.1038/s41550-023-01945-7.

Webb Detects Planetary Ingredients in NGC 346

Apr 25, 2023 by Natali Anderson

Located in the Small Magellanic Cloud at a distance of roughly 200,000 light-years, NGC 346 is a prominent young cluster — roughly 3 million years...

An artist’s impression of a gas-giant exoplanet. Image credit: Sci.News.

Low-Mass Stars are Able to Host Giant Jupiter-Like Exoplanets, Study Suggests

Mar 22, 2023 by News Staff

Gas giants, like other planets, form from protoplanetary disks of material around protostars. According to core accretion theory, they first form a core...