Tag Archive for 'Binary star'

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...

This artist’s impression shows the merger of two white dwarfs. Image credit: Nicole Reindl, University of Potsdam.

Astronomers Discover New Type of Subdwarf Star

Feb 14, 2022 by News Staff

Astronomers using the Large Binocular Telescope have discovered two unusual hot subdwarf stars: PG 1654+322 and PG 1528+025. While normal stars have surfaces...

An artist’s impression of a transition disk around an evolved binary star. Image credit: N. Stecki.

Astronomers Spot Second-Generation Planet-Forming Disks around Ancient Binary Stars

Feb 1, 2022 by Enrico de Lazaro

Astronomers have assembled a catalog of all known Galactic binaries featuring massive disks of gas and dust that are similar to the protoplanetary disks...

This artist’s impression shows a binary stellar system at the start of a common envelope phase. Image credit: Danielle Futselaar, artsource.nl.

ALMA Investigates Nature of Water-Fountain Stellar Systems

Jan 4, 2022 by News Staff

One of the most poorly understood stellar evolutionary paths is that of binary stellar systems undergoing common-envelope evolution, when the enormous...

This color image from the DECam Plane Survey shows TIC 400799224. Image credit: Powell et al., doi: 10.3847/1538-3881/ac2c81.

TESS Spots Mysterious Dust-Emitting Object in Binary Stellar System

Jan 4, 2022 by Enrico de Lazaro

Astronomers using NASA’s Transiting Exoplanet Survey Satellite (TESS) have discovered a unique object of uncertain nature — possibly a disintegrating...

An artist’s impression of b Centauri b and its host stars. Image credit: ESO / L. Calçada.

SPHERE Directly Images Wide-Orbit Gas Giant in Nearby Binary System

Dec 9, 2021 by Enrico de Lazaro

Named b Centauri (AB)b (or b Centauri b), the newfound exoplanet is estimated to be only 15 million years old and 10 times the mass of Jupiter, according...

An artist’s rendering of a classical nova. Image credit: David Hardy, www.astroart.org.

New Type of Binary Star Observed

Dec 3, 2021 by News Staff

Using new data from ESA’s Gaia star-mapping satellite, the Zwicky Transient Facility, and the Shane Telescope at Lick Observatory, astronomers have observed...

This artist’s illustration depicts what Chu et al. think is happening in the binary system KPD 0005+5106. The data suggest the white dwarf (blue sphere) is blasting a companion object (brown and red object on right), which is either a low-mass star or planet, with waves of heat and radiation. The white dwarf is also pulling material from the companion into a disk around itself, which the artist shows in orange, before it slams into its north and south poles. This process is contributing to the destruction of the companion through powerful gravitational forces. Image credit: NASA / CXC / M. Weiss / ASIAA / Chu et al.

Hard X-Ray Emission from White Dwarfs Reveals Their Hidden Companions

Nov 23, 2021 by News Staff

Using NASA’s Chandra X-ray Observatory and ESA’s XMM-Newton satellite, astronomers have investigated unusual X-ray activity in three white dwarfs:...

An artist’s impression of LAMOST J024048.51+195226.9, the fastest spinning confirmed white dwarf and only second ever magnetic propeller known. Image credit: Mark Garlick / University of Warwick.

Astronomers Spot Rapidly Spinning White Dwarf

Nov 23, 2021 by News Staff

A white dwarf in the binary system LAMOST J024048.51+195226.9 (J0240+1952 for short) completes a full rotation once every 24.93 seconds, making it the...

This artist’s impression shows NGC 1850 BH1 and a massive star orbiting it. The distortion of the star’s shape is due to the strong gravitational force exerted by the black hole. Image credit: M. Kornmesser / ESO.

Astronomers Detect Stellar-Mass Black Hole in Large Magellanic Cloud

Nov 12, 2021 by Natali Anderson

Astronomers using the Multi Unit Spectroscopic Explorer (MUSE) instrument on ESO’s Very Large Telescope have discovered a low-mass black hole in the...

Graphical table of all gravitational wave events discovered from 2015 through the end of LIGO/Virgo’s third observing run. The table includes the gravitational event name, the type of binary component (black hole, neutron star, or uncertain), the masses of the primary and secondary, and the mass of the final merged object. Image credit: LIGO / Virgo / KAGRA / C. Knox / H. Middleton.

Astrophysicists Detect 35 New Gravitational-Wave Events

Nov 10, 2021 by News Staff

Astrophysicists from the LIGO-Virgo-KAGRA Collaboration have detected a further 35 gravitational waves since the last catalog release in October 2020,...

This Hubble image shows NGC 1535, a planetary nebula located 5,500-7,500 light-years away in the constellation of Eridanus. Image credit: NASA / ESA / Bond et al. / Gladys Kober, NASA & Catholic University of America.

Hubble Sees Cleopatra’s Eye Nebula

Nov 5, 2021 by Enrico de Lazaro

The NASA/ESA Hubble Space Telescope has captured this vivid image of NGC 1535, or the Cleopatra’s Eye Nebula. This Hubble image shows NGC 1535, a planetary...

An artist’s impression of the binary system MAXI J1820+070. Image credit: John Paice.

Warped Accretion Disk Spotted around Stellar-Mass Black Hole

Oct 28, 2021 by News Staff

Variations in the brightness of light seen from around a stellar-mass black hole in the binary system MAXI J1820+070 were caused by a huge warp in its...

An artist’s impression of a white dwarf -- in this case a white dwarf in the MV Lyrae system -- accreting as it draws in material from a companion star. Image credit: Helena Uthas.

TESS Finds Pulsating White Dwarf in TW Pictoris System

Oct 19, 2021 by News Staff

The white dwarf observed by NASA’s Transiting Exoplanet Survey Satellite (TESS) is a member of the binary system TW Pictoris and is known to be accreting...

Red dwarfs flare actively and expel particles that can alter and evaporate the atmospheres of planets in their orbit. Image credit: Leibniz Institute for Astrophysics Potsdam / J. Fohlmeister.

LOFAR Detects Coherent Radio Emission from 19 Red Dwarfs

Oct 13, 2021 by News Staff

Astronomers using the Low Frequency Array (LOFAR), a large radio telescope network located mainly in the Netherlands, have detected coherent low-frequency...

This ALMA image shows the shadow of the innermost ring on the rest of the circumtriple protoplanetary disk around GW Orionis. Image credit: ALMA / ESO / NAOJ / NRAO / University of Exeter / Kraus et al.

Massive Planets May Be Orbiting Young Triple Star GW Orionis

Oct 4, 2021 by Natali Anderson

Astronomers have found strong evidence of a massive planet (or planets) — the first planet(s) in a circumtriple orbit — in a hierarchical triple...

Fast-moving debris from a supernova explosion triggered by a stellar collision in the VT 1210+4956 system crashes into material thrown out earlier, and the shocks cause bright radio emission seen by the VLA. Image credit: Bill Saxton / NRAO / AUI / NSF.

Compact Object Collision with Companion Star Triggers Supernova Event

Sep 2, 2021 by News Staff

Using data collected by the Very Large Array Sky Survey (VLASS), astronomers have found evidence that a compact object — a black hole or neutron...

An artist’s impression of brown dwarf-like objects around TOI-148, TOI-587, TOI-681, and TOI-746b. Image credit: Roger Thibaut.

Astronomers Find Five Brown Dwarf-Like Objects with Masses near Hydrogen-Burning Limit

Aug 27, 2021 by News Staff

Using data from NASA’s Transiting Exoplanet Survey Satellite (TESS) and ground-based telescopes, astronomers have discovered five transiting companions...

This composite image features a spectacular set of eight separate concentric rings around a black hole in the V404 Cygni binary system, captured using NASA’s Chandra X-ray Observatory and Neil Gehrels Swift Observatory. The image also contains optical data from the Pan-STARRS telescope in Hawaii that show the stars in the field of view. Image credit: NASA / CXC / University of Wisconsin-Madison / Heinz et al. / Pan-STARRS.

Astronomers Spot Giant X-Ray Rings around Stellar-Mass Black Hole

Aug 9, 2021 by News Staff

Astronomers using NASA’s Chandra X-ray Observatory and Neil Gehrels Swift Observatory have detected a set of eight X-ray rings around a low-mass black...

An artist’s impression of HD 265435, a binary system located approximately 1,500 light-years away in the constellation of Gemini. Image credit: Mark Garlick / University of Warwick.

HD 265435 Will Explode as Type Ia Supernova in 70 Million Years, Astronomers Say

Jul 13, 2021 by News Staff

HD 265435 is a binary system with an orbital period of around 100 min that consists of a white dwarf and a hot subdwarf star. An artist’s impression...

«‹3 456 7 ›»