Latest Binary star Stories
Unlike most types of stars, which are just as likely as not to have companions and be part of a binary system, an ancient type of variable stars known as RR Lyrae stars seemed to always live out their lives on their own – something that has long puzzles astronomers.
There’s a new hope for Star Wars fans dreaming of a rocky planet that orbits a binary star like Luke Skywalker’s homeworld of Tatooine: astrophysicists from the University of Utah and the Smithsonian Astrophysical Observatory say that such a planet could theoretically exist.
Science fiction fans might remember the dual-star sunset of the first Star Wars film, and while that might seem a little exotic, NASA has reported the discovery of a planet in four-star system called 30 Ari, the second such system ever found.
Not much escapes the sight of the European Southern Observatory’s Very Large Telescope in Chile, but astronomers using the powerful four-telescope array have been unable to pinpoint the location of a brown dwarf star believed to be orbiting a nearby binary star system.
Catching the formation of a single star is a tough thing to do, and yet a large team of international astronomers has announced the discovery of four stars all forming in the same system.
Scientists using the Atacama Large Millimeter/submillimeter Array in Chile have observed a very exciting phenomenon — the exchange of dust and gas in a multiple-star system.
New modeling studies from Carnegie’s Alan Boss demonstrate that most of the stars we see were formed when unstable clusters of newly formed protostars broke up.
A team led by Gastón Folatelli at the Kavli IPMU, the University of Tokyo, has found evidence of a hot binary companion star to a yellow supergiant star, which had become a bright supernova.
WASHINGTON, Sept. 9, 2014 /PRNewswire-USNewswire/ -- Using NASA's Hubble Space Telescope, astronomers have discovered a companion star to a rare type of supernova.
As one of the first objects observed by NASA’s Chandra X-ray Observatory after its launch some 15 years ago, the Eta Carinae star system continues to reveal new clues about its nature through the X-rays it generates.
Lyra Constellation -- Lyra (the lyre) is a prominent, although fairly small, northern constellation. It was one of Ptolemy's 48 constellations, and also counts among the modern 88 constellations. Its brightest star is Vega (Alpha Lyrae), which together with Altair (Alpha Aquilae) and Deneb (Alpha Cygni) forms the large asterism known as the Summer Triangle. Beta Lyr is a half separated (i.e. one of the stars reached its Rochevolume) eclipsing binary of a cream-white colour. The...
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...
Variable Star -- Most stars are of nearly constant luminosity. Our own Sun is a good example which goes through practically no measurable variation in brightness. There are, however, stars which do vary in brightness, called variable stars. They fall into two main groups: Intrinsic variables These are stars which have intrinsic variations in brightness, that is the star itself gets brighter and dimmer. There are many types of intrinsic variables, the main types being: -- Mira...
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...
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