Latest Binary star Stories
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redOrbit Staff & Wire Reports - Your Universe Online The orbits of distant binary stars can become altered over time, potentially causing violent disruptions in their planetary systems and possibly causing worlds to become scattered or ejected, an international team of astrophysicists has discovered in a new study. According to the researchers, all planetary systems in which one star is orbited by a second, companion star, can be altered by the gravity of the companion star, but...
WASHINGTON, Dec. 10, 2012 /PRNewswire-USNewswire/ -- Using computer simulations, scientists from the NASA Astrobiology Institute team at the University of Hawaii are shedding light on a question that has challenged astronomers for years: What causes wide binary stars? (Logo: http://photos.prnewswire.com/prnh/20081007/38461LOGO ) Binary stars are pairs of stars that orbit each other. Wide binary stars are separated by as much as one light-year in their orbits, farther apart than some...
Lee Rannals for redOrbit.com - Your Universe Online Scientists have reported in the journal Nature that they have figured out by using computer simulations how wide binary stars are able to form. Wide binary stars are two stars that orbit each other at a distance up to a light year. Some binary stars can be very close, while other pairs are extremely far apart. Astronomers have known about wide binary pairs for a long time, but how they form has remained a mystery. Now, astronomers...
[ Video 1 ] | [ Video 2 ] | Video 3 ] Lee Rannals for redOrbit.com - Your Universe Online Astronomers have discovered a pair of stars orbiting each other at the center of a remarkable example of a planetary nebula. The latest find confirms a theory about what controls the spectacular and symmetric appearance of the material flung out into space. Planetary nebulae are glowing shells of gas around white dwarfs, and Fleming 1 is considered a great example that has strikingly...
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University of Notre Dame Justin Crepp, Freimann Assistant Professor of physics at the University of Notre Dame, provided the high-contrast imaging observations that confirmed the first extrasolar planet discovered in a quadruple star system. He is a co-author on a paper about the discovery, “Planet Hunters: A Transiting Circumbinary Planet in a Quadruple Star System,” recently posted to the open-access arXiv.org, and submitted for publication to The Astrophysical Journal. Crepp’s...
Lee Rannals for redOrbit.com - Your Universe Online A team of international astronomers, along with Planethunters.org volunteers, found the first reported case of a planet orbiting twin suns that in turn is orbited by a second distant pair of stars. Researchers said that only six planets are known to orbit two stars, and none of these are orbited by distant stellar companions. "Circumbinary planets are the extremes of planet formation," said Meg Schwamb of Yale University and lead...
[Watch the Video: X-ray Satellites Monitor the Clashing Winds of a Colossal Binary] [Watch the Video: Simulation of Colliding Stellar Wind Binary] [Watch the Video: Simulation of Binary Star System] Lee Rannals for redOrbit.com – Your Universe Online Astronomers have X-rayed the stellar winds of two massive stars that are orbiting around one another. Stellar winds can trigger the collapse of surrounding clouds of gas and dust to form new stars, and can also blast the clouds...
Lee Rannals for redOrbit.com - Your Universe Online Astronomers now believe the "monster stars" located in the nearby galaxy the Large Magellanic Cloud (LMC) were formed through the merger of lighter stars. The team wrote in the journal Monthly Notices of the Royal Astronomical Society that the group of stars may have formed while smaller stars were in a tight binary system. In 2010, scientists discovered these supermassive stars, one of which is more than 300 times the mass of the...
Latest Binary star Reference Libraries
X-ray Burster -- X-ray bursters are a class of binary stars which are luminous in X-rays. They contain a neutron star and a low-mass companion star. The companion fills its Roche lobe and therefore the neutron star is accreting matter from it. The inflowing gas forms an accretion disk around the neutron star. Sometimes X-ray bursters show a sudden increase in their X-ray luminosity, called X-ray burst. All properties of the X-ray bursts can be explained assuming that they result from...
X-ray Binaries -- X-ray binaries are a class of binary stars that are very luminous in X-rays. The X-rays are produced by matter falling from one component (usually a relatively normal star) to the other component, which is a neutron star or a black hole. The infalling matter releases gravitational potential energy, up to several tens of per cent of its rest mass as X-rays. (Hydrogen fusion releases about 0.7 per cent of rest mass) X-ray binaries are further subdivided into...
Triple Star -- A triple star system consists of three gravitationally bound stars. The stars are in orbits around a common center of mass, usually so that two of the stars form a close binary star and the third is further away. This configuration is often called a hierarchical triple star. Multiple stars containing more than three stars can usually be decomposed to binaries and single stars that are in a hierachically bound system. ----- Click here to learn more on this...
Nova -- A nova is an enormous nuclear explosion caused by the accretion of hydrogen onto the surface of a white dwarf star. When a white dwarf has a close companion star, the companion will often begin to have its outer atmosphere drawn away from it by the white dwarf's gravity as the companion star ages and expands into a red giant. The gases so captured consist primarily of hydrogen and helium, the two principle constituents of matter in the universe. The gases are compacted on the...
Double Star -- When two stars are so nearly in the same direction as seen from Earth that they appear to be a single star to the naked eye but may be separated by the use of telescopes, they are referred to as a double star. There are two different kinds of double star. In the case where two stars are only apparently close to each other, but which are in fact separated by a great distance are known as optical doubles or optical binaries. In the vast majority of cases, however, the two...
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