Tag Archive for 'Binary star'

An artist’s impression of a stellar-mass black hole surrounded by a disk of gas and plasma gravitationally pulled from a close binary star companion. Image credit: NASA / CXC / M. Weiss.

Astrophysicists Suggest New Way to Detect Stellar-Mass Black Holes

Sep 22, 2020 by Sergio Prostak

An analysis of archival X-ray data from NASA’s Rossi X-Ray Timing Explorer has revealed a clear separation between the characteristics of stellar-mass...

An artist’s impression of the Gliese 414 system. Image credit: Sci-News.com.

Astronomers Find Two Massive Exoplanets in Nearby Binary System

Sep 21, 2020 by Natali Anderson

Astronomers have discovered two planets orbiting a bright dwarf star in the binary stellar system Gliese 414. An artist’s impression of the Gliese 414...

SN LSQ14fmg exploded in SDSS J221646.15+152114.2, a star-forming galaxy 100 million light-years away. Image credit: Hsiao et al, doi: 10.3847/1538-4357/abaf4c.

Astronomers Observe Slowest Rising Type Ia Supernova Ever Seen

Sep 10, 2020 by News Staff

The exaggerated properties of a Type Ia supernova dubbed SN LSQ14fmg may help reveal the origin of the ‘super-Chandrasekhar’ group of supernovae it...

An artist’s conception of a potential solar companion, which theorists believe was developed in the Sun’s birth cluster and later lost. If proven, the solar companion theory would provide additional credence to theories that the Oort Cloud formed as we see it today, and that Planet Nine was captured rather than formed in place. Image credit: M. Weiss.

Early Solar System May Have Had Two Suns

Aug 19, 2020 by News Staff

In a paper published in the Astrophysical Journal Letters, Harvard University astrophysicists Avi Loeb and Amir Siraj show that an equal-mass stellar companion...

An artist’s impression of a thermonuclear supernova: the material ejected by the supernova will initially expand very rapidly, but then gradually slow down, forming an intricate giant bubble of hot glowing gas; eventually, the charred remains of the white dwarf that exploded will overtake these gaseous layers, and speed out onto its journey across our Milky Way Galaxy. Image credit: Mark Garlick / University of Warwick.

Thermonuclear Supernova Ejects White Dwarf from Binary System

Jul 15, 2020 by News Staff

A white dwarf star called SDSS J124043.01+671034.68 (SDSS J1240+6710) is traveling at 900,000 km/h (559,234 mph) through our Milky Way Galaxy. It also...

An artist’s impression of the atmosphere of Antares. As seen with the naked eye (up until the photosphere), Antares is around 700 times larger than our sun, big enough to fill the Solar System beyond the orbit of Mars (Solar System scale shown for comparison). But ALMA and VLA showed that its atmosphere, including the lower and upper chromosphere and wind zones, reaches out 12 times farther than that. Image credit: NRAO / AUI / NSF / S. Dagnello.

Radio Telescopes Reveal Lukewarm Atmosphere of Nearby Red Supergiant Star Antares

Jul 3, 2020 by News Staff

Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) and NSF’s Karl G. Jansky Very Large Array (VLA) have created the most detailed...

An artist’s rendition of a mystery compact object in ‘mass gap’ found by LIGO and Virgo gravitational wave detectors. Image credit: LIGO / Caltech / MIT / R. Hurt, IPAC.

GW190814 Sheds Light on Mass Gap between Neutron Stars and Black Holes

Jun 25, 2020 by News Staff

The gravitational-wave signal GW190814, detected on August 14, 2019 by NSF’s Laser Interferometer Gravitational-Wave Observatory (LIGO) and the Virgo...

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

Young Brown Dwarf in Pleiades Cluster Has Companion

Jun 11, 2020 by Natali Anderson

Astronomers have found evidence of a substellar companion — a low-mass brown dwarf or a giant planet — orbiting Roque 12, a member of the young...

An artist’s impression of an ultraluminous X-ray pulsar. Image credit: NASA / JPL-Caltech.

Astronomers Find Ultraluminous X-Ray Pulsar in Magellanic Bridge

Jun 8, 2020 by Enrico de Lazaro

Astronomers using ISRO’s AstroSat space observatory have detected a very rare ultraluminous X-ray source in the Magellanic Bridge, a 43,000-light-year-long...

Chandra Catches Relativistic Jets from Stellar-Mass Black Hole

Jun 2, 2020 by News Staff

Astronomers using NASA’s Chandra X-ray Observatory have observed a pair of relativistic jets blasting away from a black hole in the binary system MAXI...

An artist’s impression of the super-Earth Gliese 338Bb and its stars. Image credit: Sci-News.com.

Gliese 338Bb: Super-Earth Found in Nearby Binary System

Apr 6, 2020 by Natali Anderson

Astronomers using the CARMENES spectrograph at Calar Alto Observatory in Spain have discovered a super-Earth exoplanet orbiting an M-dwarf star in the...

An artist’s impression of a double sunset on a ‘Tatooine’ exoplanet forming in a circumbinary disk that is misaligned with the orbits of its binary stars. Image credit: NRAO / AUI / NSF / S. Dagnello.

ALMA Observes Protoplanetary Disks around Binary Stars

Mar 19, 2020 by News Staff

Using data from the Atacama Large Millimeter/submillimeter Array (ALMA), a team of astronomers has found striking orbital geometries in circumbinary protoplanetary...

An artist’s impression of two white dwarfs in the process of merging; depending on the combined mass, the system may explode in a thermonuclear supernova, or coalesce into a single heavy white dwarf, as with WD J0551+4135. Image credit: Mark Garlick / University of Warwick.

Astronomers Discover First Pulsating White Dwarf in Eclipsing Binary System

Mar 17, 2020 by Natali Anderson

Astronomers have spotted a pulsating white dwarf star in the binary stellar system SDSS J115219.99+024814.4 (SDSS J1152+0248 for short). An artist’s...

TESS Discovers New Class of Pulsating Star

Mar 10, 2020 by News Staff

Using data from NASA’s Transiting Exoplanet Survey Satellite (TESS), a team of professional astronomers and citizen scientists has discovered a star...

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...

Astronomers Spot Ultra-Massive White Dwarf with Unique Atmosphere

Mar 3, 2020 by News Staff

Astronomers have discovered an ultra-massive white dwarf with a unique carbon-hydrogen mixed atmosphere. Named WD J055134.612+413531.09 (WD J0551+4135...

This ALMA image shows the outcome of a stellar fight: a complex and stunning gas environment surrounding the binary system HD 101584. The colors represent speed, going from blue (gas moving the fastest towards us) to red (gas moving the fastest away from us). Jets, almost along the line of sight, propel the material in blue and red. The stars in the binary are located at the single bright dot at the center of the ring-like structure shown in green, which is moving with the same velocity as the system as a whole along the line of sight. Astronomers believe this ring has its origin in the material ejected as the lower mass star in the binary spiraled towards its red-giant partner. Image credit: ALMA / ESO / NAOJ / NRAO / Olofsson et al / Robert Cumming.

Astronomers Probe Peculiar Binary System: HD 101584

Feb 5, 2020 by News Staff

There is growing evidence that evolution of red giant stars is often affected by an interplay with a nearby companion. Using the Atacama Large Millimeter/submillimeter...

An artist’s depiction of a rapidly spinning neutron star and a white dwarf dragging the fabric of spacetime around its orbit. Image credit: Mark Myers, OzGrav ARC Centre of Excellence.

Exotic Binary System Confirms Relativistic Frame-Dragging

Jan 31, 2020 by News Staff

An international team of astronomers has found exciting new evidence for Lense-Thirring precession — an effect of relativistic frame-dragging —...

An artist’s impression of the KSN:BS-C11a system. Image credit: NASA / L. Hustak, STScI / R. Ridden-Harper, STScI & Australian National University.

Kepler Observes Earliest Stages of Dwarf Nova’s Super-Outburst

Jan 29, 2020 by News Staff

Using the archival data from NASA’s Kepler Space Telescope, astronomers have identified a previously unknown dwarf nova that underwent a ‘supermaxima’...

Astrophysicists One Step Closer to Unlocking Mystery of Superluminous Supernovae

Jan 24, 2020 by News Staff

SN 2006gy, a superluminous supernova discovered in 2006, gained its exceptional brightness when a normal Type Ia explosion smashed into a dense shell of...

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