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Star kills its 'congenial' to form together a dwarf-binary system, astronomers confirm

A team of Brazilian astronomers observed a unique binary system consisting of a low-mass white dwarf and a brown dwarf. The white dwarf's existence was cut off due to the loss of matter caused by the companion, resulting in its premature death and transformation into a white dwarf.

SourceFundação de Amparo à Pesquisa do Estado de São Paulo·JournalMonthly Notices of the Royal Astronomical Society·DateNov 9, 2017

Shedding light on the mystery of matter accretion in young stars

An international team of researchers has made a groundbreaking discovery about matter accretion in young stars, allowing for more accurate calculations of the accretion rate. This finding is crucial for understanding the life cycle of stars and their growth under gravity's influence.

SourceInstitut national de la recherche scientifique - INRS·JournalScience Advances·DateNov 2, 2017
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Gravitational waves shed first light on mergers of neutron stars

The LIGO-Virgo Collaboration observed the merger of two neutron stars, producing gravitational waves and a gamma-ray burst, marking the birth of multi-messenger astronomy. This discovery confirms kilonova formation, providing insight into the universe's heaviest elements.

SourceCNRS·JournalPhysical Review Letters·DateOct 16, 2017

A one-of-a-kind star found to change over decades

Researchers at the University of Notre Dame have discovered that the unique binary star system AR Scorpii exhibits variability on a timescale of decades, contrary to initial expectations. The study found that the system's brightness more than doubled in minutes and hours, but also showed long-term changes over decades.

SourceUniversity of Notre Dame·JournalThe Astrophysical Journal Letters·DateSep 12, 2017

Accretion-powered pulsar reveals unique timing glitch

Researchers have observed a sudden change in rotation speed of SXP 1062, a binary pulsar exhibiting the 'glitch' phenomenon. The discovery provides new constraints on neutron star equation of state and sheds light on the interior dynamics of these compact objects.

SourceRoyal Astronomical Society·JournalMonthly Notices of the Royal Astronomical Society·DateSep 6, 2017
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Astronomers use Kepler satellite to study variability in the Seven Sisters Cluster

Researchers have developed a new algorithm to enhance observations from the Kepler Space Telescope and perform detailed studies of stellar variability. The technique, called halo photometry, reveals pulsations in B-type stars with day-long periods, offering insights into poorly understood processes in their cores.

SourceGeorgia State University·JournalMonthly Notices of the Royal Astronomical Society·DateAug 28, 2017

Kepler satellite discovers variability in the Seven Sisters

The Kepler Space Telescope's K2 Mission has observed detailed variations in the brightness of stars in the Seven Sisters star cluster. The team developed a new algorithm to measure relative changes in brightness, overcoming instrumental effects and revealing slow-pulsating B stars.

SourceRoyal Astronomical Society·JournalMonthly Notices of the Royal Astronomical Society·DateAug 25, 2017

Meadow of dancing brittle stars shows evolution at work

Researchers discovered a new species of brittle star, Teleosaster creasyi, preserved in a 275-million-year-old fossilized meadow in Western Australia. The species shows evidence of evolution before the Permian-Triassic extinction event, which wiped out over 90% of marine life.

SourceUniversity of Cambridge·JournalJournal of Systematic Palaeontology·DateAug 13, 2017
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The mystery of the pulsating blue stars

A team of Polish astronomers identified a new class of variable dwarf stars with shorter oscillation periods and higher surface temperatures than known classes. The newly discovered BLAPs are hotter and more compact than previously thought, posing an enigma in the field of astronomy.

SourceFriedrich-Alexander-Universität Erlangen-Nürnberg·JournalNature Astronomy·DateAug 9, 2017

Primordial black holes may have helped to forge heavy elements

Tiny primordial black holes could have destroyed neutron stars from the inside out, leading to the ejection of dense neutron-rich material that formed heavy elements like gold and uranium. This process would also explain several long-standing mysteries in the universe, including Fast Radio Bursts and positron emissions.

SourceUniversity of California - San Diego·JournalPhysical Review Letters·DateAug 4, 2017

Milky Way could have 100 billion brown dwarfs

An international team of astronomers suggests that the Milky Way contains a staggering number of brown dwarfs, with estimates ranging from 25 to 100 billion. The Substellar Objects in Nearby Young Clusters (SONYC) survey found that brown dwarfs are common in dense star clusters and have a small effect on their formation environment.

SourceRoyal Astronomical Society·JournalMonthly Notices of the Royal Astronomical Society·DateJul 5, 2017

Fastest stars in the Milky Way are 'runaways' from another galaxy

Astronomers found that the fastest-moving stars in the Milky Way originated in the Large Magellanic Cloud, a dwarf galaxy in orbit around our own. Computer simulations and data analysis showed that these stars were ejected from their original home at incredible speeds.

SourceUniversity of Cambridge·JournalMonthly Notices of the Royal Astronomical Society·DateJul 4, 2017

NASA-funded CHESS mission will check out the space between stars

The NASA-funded CHESS mission will study the earliest stages of star formation by analyzing light filtering through the interstellar medium. The mission aims to understand the lifecycle of stars and the structure of these vast clouds, which can help scientists pinpoint where they stand in the process of star formation.

SourceNASA/Goddard Space Flight Center·DateJun 23, 2017
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New evidence that all stars are born in pairs

Researchers found that nearly all sunlike stars form with a companion, but these companions often escape and merge with other stars. The study's findings have implications for the origins of galaxies and suggest that many stars are born in pairs, like our sun and its long-lost sibling.

SourceUniversity of California - Berkeley·JournalMonthly Notices of the Royal Astronomical Society·DateJun 13, 2017

RIT study suggests dying stars give newborn black holes a swift kick

Researchers suggest that massive star explosions can expel newborn black holes with strong natal kicks, affecting their spin and alignment. This phenomenon could help explain years of tentative evidence suggesting black holes receive such kicks.

SourceRochester Institute of Technology·JournalPhysical Review Letters·DateJun 5, 2017

Third gravitational wave detection offers new insight into black holes

An international team of researchers detected gravitational waves from a binary black hole system, providing evidence that black holes in binary systems may not be aligned. The discovery highlights the need for further improvements in detector sensitivity to explore the universe.

SourceAustralian National University·JournalPhysical Review Letters·DateJun 1, 2017
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Discovered: Fast-growing galaxies from early universe

A team of astronomers discovered a new kind of galaxy that formed less than a billion years after the Big Bang, creating stars more than 100 times faster than our Milky Way. This find solves a long-standing puzzle of how massive galaxies came to have hundreds of billions of stars when they formed so quickly.

SourceCarnegie Institution for Science·JournalNature·DateMay 24, 2017

Diverse populations make rational collective decisions

Researchers at Hokkaido University discovered that individual ants with different preferences can lead to a collective rational decision when making binary choices. The team found that the middle group of ants, which preferred a higher sucrose concentration, was the key to the colony's decision-making process.

SourceHokkaido University·JournalRoyal Society Open Science·DateMay 16, 2017

VISTA peeks through the Small Magellanic Cloud's dusty veil

The VISTA survey has imaged millions of stars in the Small Magellanic Cloud, revealing surprising results about star formation history and structure. Most SMC stars formed relatively recently, unlike those in larger galaxies.

SourceESO·JournalMonthly Notices of the Royal Astronomical Society·DateMay 3, 2017

Astronomers perform largest-ever survey of high-mass binary star systems

Researchers have discovered and characterized 82 massive binary star systems in the Tarantula Nebula, a satellite galaxy of the Milky Way. The study provides new insights into the properties of these systems, which are expected to play a crucial role in shaping the chemical evolution of the universe.

SourceFundação de Amparo à Pesquisa do Estado de São Paulo·DateApr 19, 2017
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Speeding star gives new clues to breakup of multi-star system

Astronomers have discovered three young stars that were ejected from an unstable multi-star system, providing new clues to the breakup of such systems. The stars are moving at speeds of up to nearly 30 times faster than most other stars in the same region.

SourcePenn State·JournalThe Astrophysical Journal Letters·DateMar 30, 2017

Fledgling stars try to prevent their neighbors from birthing planets

Researchers at Imperial College London found that a weak star's light can cause significant material loss from a protoplanetary disc. The study of the IM Lup system revealed that the disc will lose about 3,300 Earth's worth of material over its lifetime.

SourceImperial College London·JournalMonthly Notices of the Royal Astronomical Society·DateMar 22, 2017

Protostar blazes bright, reshaping its stellar nursery

A massive protostar underwent an intense growth spurt, reshaping its surroundings and emitting nearly 100 times more light. This event supports the theory that young stars can experience dramatic growth spurts, which may be triggered by star-forming gas crashing onto their surfaces.

SourceNational Radio Astronomy Observatory·JournalThe Astrophysical Journal Letters·DateMar 15, 2017
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Star discovered in closest known orbit around black hole

Astronomers have found evidence for a star orbiting a black hole at an unprecedented distance, about twice an hour. The close-in binary system, located 14,800 light years from Earth, provides valuable insights into the behavior of black holes and their companion stars.

SourceMichigan State University·JournalMonthly Notices of the Royal Astronomical Society·DateMar 13, 2017

Ancient stardust sheds light on the first stars

Astronomers have discovered the youngest and most distant galaxy ever seen, containing an abundance of interstellar dust formed by earlier star deaths. This discovery provides new information on when the first supernovae exploded and sheds light on the early Universe.

SourceESO·JournalThe Astrophysical Journal Letters·DateMar 8, 2017

Iota Orionis: Pulsating beacon of a constellation

Researchers have discovered a repeating one-per-cent spike in the light of Iota Orionis, a binary star system with a mass 35 times that of the Sun. The unusual variation is caused by the gravitational interaction between the two stars, triggering quakes that allow astronomers to probe the star's inner workings.

SourceUniversity of Montreal·JournalMonthly Notices of the Royal Astronomical Society·DateMar 8, 2017

Star clusters discovery could upset the astronomical applecart

Researchers have discovered young stars in old star clusters, suggesting that our current models of stellar evolution may be incorrect. This finding could mean that star clusters contain multiple generations of stars.

SourceInternational Centre for Radio Astronomy Research·JournalMonthly Notices of the Royal Astronomical Society·DateMar 6, 2017

Stars regularly ripped apart by black holes in colliding galaxies

Astronomers found that stars are ripped apart by supermassive black holes much more often than previously thought, with rates dramatically increasing during galaxy collisions. This new understanding could lead to locating and studying dim black holes in the Milky Way.

SourceUniversity of Sheffield·JournalNature Astronomy·DateFeb 27, 2017
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Intergalactic unions more devastating than we thought

Scientists estimate that solitary supermassive black holes in galactic centers may be responsible for fewer observed stars being captured by black holes. The researchers found that gravitational effects from merging galaxies can explain the discrepancy, suggesting that tidal disruption events occur without our knowledge.

SourceMoscow Institute of Physics and Technology·JournalThe Astrophysical Journal·DateFeb 15, 2017

A bridge of stars connects 2 dwarf galaxies

Researchers use Gaia data to detect pulsating stars and trace the extent of the Large Magellanic Cloud, revealing a fuzzy halo stretching 20 degrees from its center. The discovery provides insights into the clouds' mass and interaction with the Milky Way, shedding light on their role in galaxy formation.

SourceUniversity of Cambridge·JournalMonthly Notices of the Royal Astronomical Society·DateFeb 7, 2017
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Cosmic dust that formed our planets traced to giant stars

Researchers solved a long-standing puzzle about the source of key stardust grains, which formed before our Solar System and can be recovered from meteorites. The study identifies Asymptotic Giant Branch (AGB) stars as the producers of these grains, shedding light on nuclear processes inside stars that led to their formation.

SourceUniversity of Edinburgh·JournalNature Astronomy·DateJan 30, 2017

Rapid gas flares discovered in white dwarf star for the first time

Scientists have discovered incredibly rapid gas flares from a white dwarf binary star system for the first time. The unusual activity was observed at radio wavelengths in SS Cyg, one of the brightest variable stars in the constellation of Cygnus.

SourceUniversity of Oxford·JournalMonthly Notices of the Royal Astronomical Society·DateJan 26, 2017

Mystery of ultra-diffuse faint galaxies solved

Researchers from the Niels Bohr Institute have recreated characteristics of ultra-diffuse faint galaxies using computer simulations. The study reveals that supernovae explosions during star formation can push stars and dark matter outwards, causing galaxies to expand and become faint.

SourceUniversity of Copenhagen - Niels Bohr Institute·JournalMonthly Notices of the Royal Astronomical Society·DateNov 28, 2016
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Astronomers unveil 'heart' of Eta Carinae

An international team of astronomers has imaged the Eta Carinae star system in unprecedented detail, revealing a region where extremely high-velocity stellar winds collide. The observations provide valuable insights into the basic parameters of the binary system and its internal structure.

SourceFundação de Amparo à Pesquisa do Estado de São Paulo·DateNov 16, 2016

Solved: One of the mysteries of globular clusters

A study by an international team solves the origin of successive generations of stars in globular clusters. The most massive, evolved AGB stars are found to contaminate the interstellar medium, giving rise to new generations of stars.

SourceInstituto de Astrofísica de Canarias (IAC)·JournalThe Astrophysical Journal Letters·DateNov 8, 2016

The birth of massive stars is accompanied by strong luminosity bursts

Researchers modeled massive star formation using high-performance computers, discovering episodic luminosity bursts that outshine the collective effect of 100,000 Suns. These bursts are thought to be caused by the migration of dense clumps through accretion disks, offering new insights into the birth process of massive stars.

SourceUniversity of Vienna·JournalMonthly Notices of the Royal Astronomical Society·DateNov 7, 2016

NASA missions harvest a passel of 'pumpkin' stars

Astronomers using Kepler and Swift missions discover 18 stars that rotate rapidly, producing X-ray emissions at more than 100 times the sun's level. These stars are believed to have formed from the merger of two sun-like stars in close binary systems.

SourceNASA/Goddard Space Flight Center·DateOct 27, 2016
Sony Alpha a7 IV (Body Only)

Sony Alpha a7 IV (Body Only) delivers reliable low-light performance and rugged build for astrophotography, lab documentation, and field expeditions.

OU-led team discovers rare, newborn tri-star system using ALMA

A rare triple-star system has been discovered by a University of Oklahoma-led research team using ALMA observations, providing insights into the formation of young binary and multiple star systems. The team found that the disk surrounding the tri-star system appeared susceptible to fragmentation, leading to the creation of newborn stars.

SourceUniversity of Oklahoma·JournalNature·DateOct 26, 2016

The Milky Way's ancient heart

Researchers found a dozen previously unknown RR Lyrae stars at the center of the Milky Way, indicating that galactic bulges may have formed through merging ancient globular clusters. The discovery provides strong evidence for an important theory of galactic evolution.

SourceESO·JournalThe Astrophysical Journal Letters·DateOct 12, 2016

Chaos in cosmos: Stars with three planet-forming discs of gas

Researchers have observed a binary star system with two stars and three rotating planet-forming accretion discs, all misaligned with each other. The discovery challenges current understanding of planetary system formation and prompts further study to understand the physics behind this unusual system.

SourceUniversity of Copenhagen - Niels Bohr Institute·JournalThe Astrophysical Journal Letters·DateOct 11, 2016
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Detailed age map shows how Milky Way came together

Researchers used colors to identify the ages of over 130,000 stars in the Milky Way's halo, revealing a clear hierarchy with oldest stars at the center and younger ones further away. The study supports a hierarchical model of galaxy formation, suggesting that small mini-halos merged to form the Milky Way.

SourceUniversity of Notre Dame·JournalNature Physics·DateSep 6, 2016

Discovery one-ups Tatooine, finds twin stars hosting three giant exoplanets

A team of Carnegie scientists has discovered three giant planets in a binary star system composed of stellar 'twins' that are also effectively siblings of our Sun. The findings may help explain the influence that giant planets like Jupiter have over a solar system's architecture.

SourceCarnegie Institution for Science·JournalThe Astronomical Journal·DateAug 31, 2016

Astronomers identify a young heavyweight star in the Milky Way

Researchers have identified a young star over 30 times the mass of our Sun, which could help us understand how massive stars are formed. The discovery suggests that massive stars form in a similar way to smaller stars like our Sun.

SourceUniversity of Cambridge·JournalMonthly Notices of the Royal Astronomical Society·DateAug 21, 2016

Mapping the exotic matter inside neutron stars

A team of physicists has made a significant breakthrough in understanding the internal composition of neutron stars. They used thermal perturbation theory to determine the thermodynamic properties of dense quark matter under extreme conditions, shedding light on its potential presence inside these stars.

SourceUniversity of Helsinki·JournalPhysical Review Letters·DateAug 2, 2016
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A giant stellar void in the Milky Way

An international team of astronomers has found a huge region around the centre of the Milky Way devoid of young stars, indicating a lack of star formation. This 'Cepheid desert' stretches for thousands of light years and challenges our understanding of the Galaxy's formation and evolution.

SourceRoyal Astronomical Society·JournalMonthly Notices of the Royal Astronomical Society·DateAug 1, 2016

Is Earthly life premature from a cosmic perspective?

According to new theoretical work, life on Earth is actually premature from a cosmic perspective. The chances of life growing much higher in the distant future due to star lifetimes were found to be 1000 times higher than now. Scientists recommend studying nearby red dwarf stars and their planets for signs of habitability.

SourceCenter for Astrophysics | Harvard & Smithsonian·JournalJournal of Cosmology and Astroparticle Physics·DateAug 1, 2016

Star's intense radiation beams whip neighboring red dwarf

Researchers at the University of Warwick have discovered a new type of exotic binary star that produces powerful beams of particles and radiation, affecting its nearby companion star. The star, AR Scorpii, has a white dwarf with intense magnetic fields that accelerate electrons in the atmosphere of the red dwarf to close to the speed o...

SourceUniversity of Warwick·JournalNature·DateJul 27, 2016

Unusual planet within a triple star system imaged

Researchers directly detected a gas giant planet with a wide orbit in the young triple star system HD 131399, challenging existing knowledge about exoplanet detection. The unusual arrangement of the three stars and the planet's size, containing water and methane, may have formed through interactions between planets or binary stars.

SourceAmerican Association for the Advancement of Science (AAAS)·JournalScience·DateJul 7, 2016
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