News tagged with companion star
Related topics: galaxies , stars , black holes , white dwarfs , neutron stars
Space telescopes reveal previously unknown brilliant X-ray explosion in our Milky Way galaxy
Astronomers in Japan, using an X-ray detector on the International Space Station, and at Penn State University, using NASA's Swift space observatory, are announcing the discovery of an object newly emitting ...
Oct 22, 2010 |
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Star, not so bright: Model explains evolution of unusual binary system, why large star not so luminous
In a galaxy far away, an exceptionally massive black hole is traveling around a massive star in an unusually tight orbit. Also odd, the star is not as bright as it should be.
Oct 20, 2010 |
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Where do supernovae come from?
(PhysOrg.com) -- Supernovae, the explosive deaths of massive stars, are among the most momentous events in the cosmos because they disburse into space all of the chemical elements that were produced inside ...
Sep 17, 2010 |
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Eclipsing pulsar promises clues to crushed matter
Astronomers using NASA's Rossi X-ray Timing Explorer (RXTE) have found the first fast X-ray pulsar to be eclipsed by its companion star. Further studies of this unique stellar system will shed light on some ...
Aug 17, 2010 |
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Brown Dwarf Found Orbiting a Young Sun-Like Star
(PhysOrg.com) -- Astronomers have imaged a very young brown dwarf, or failed star, in a tight orbit around a young nearby sun-like star. The discovery is expected to shed light on the early stages of solar ...
Jul 29, 2010 |
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Origin of Key Cosmic Explosions Still a Mystery
(PhysOrg.com) -- When a star explodes as a supernova, it shines so brightly that it can be seen from millions of light-years away. One particular supernova variety - Type Ia - brightens and dims so predictably ...
Jul 12, 2010 |
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Supernovae mystery solved
(PhysOrg.com) -- Supernovae are gigantic stellar explosions that can be seen across the entire universe. Type Ia supernovae are a relatively homogeneous class of stellar explosions, which researchers use as ...
Jun 30, 2010 |
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The Polaris Cluster
(PhysOrg.com) -- A Cepheid star is one whose mass and age results in physical conditions that generate periodic oscillations in its photosphere. A Cepheid thus varies regularly in brightness, with a period ...
May 28, 2010 |
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Astronomers Capture a Rare Stellar Eclipse in Opening Scene of Year-long Show
(PhysOrg.com) -- For the first time, a team of astronomers has imaged the eclipse of the star Epsilon Aurigae by its mysterious, less luminous companion star. Very high-resolution images, never before possible, ...
Apr 07, 2010 |
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Measuring a Monstrous Supernova
A rare Type Ia supernova whose progenitor star had a mass some two and a half times that of our sun - much more mass than a Type Ia progenitor should be able to accumulate before it explodes - has led members ...
Mar 25, 2010 |
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Getting WISE About Nemesis
Is our Sun part of a binary star system? An unseen companion star, nicknamed 'Nemesis,' may be sending comets towards Earth. If Nemesis exists, NASA's new WISE telescope should be able to spot it.
Mar 11, 2010 |
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A faint star orbiting the Big Dipper's Alcor discovered
Next time you spy the Big Dipper, keep in mind that there is another star, invisible to the unaided eye, contributing to this constellation.
Dec 10, 2009 |
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Black hole caught zapping galaxy into existence?
(PhysOrg.com) -- Which come first, the supermassive black holes that frantically devour matter or the enormous galaxies where they reside? A brand new scenario has emerged from a recent set of outstanding ...
Nov 30, 2009 |
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XMM-Newton uncovers a celestial Rosetta stone
(PhysOrg.com) -- ESA's XMM-Newton orbiting X-ray telescope has uncovered a celestial Rosetta stone: the first close-up of a white dwarf star, circling a companion star, that could explode into a particular ...
Sep 03, 2009 |
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NASA's Spitzer Images Out-of-This-World Galaxy
(PhysOrg.com) -- NASA's Spitzer Space Telescope has imaged a wild creature of the dark -- a coiled galaxy with an eye-like object at its center.
Jul 23, 2009 |
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