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News About Stellar Chemistry
July 29, 2015
Discovering a New Stage in the Galactic Lifecycle
Pasadena CA (SPX) Jun 28, 2015
On its own, dust seems fairly unremarkable. However, by observing the clouds of gas and dust within a galaxy, astronomers can determine important information about the history of star formation and the evolution of galaxies. Now thanks to the unprecedented sensitivity of the telescope at the Atacama Large Millimeter Array (ALMA) in Chile, a Caltech-led team has been able to observe the dust contents of galaxies as seen just 1 billion years after the Big Bang-a time period known as redshift 5-6. Th ... read more

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Simulated map of missing satellite galaxies may answer darkmatter puzzle
A ripple in the outskirts of the Milky Way-and a hunch-led Rochester Institute of Technology astrophysicist Sukanya Chakrabarti to a previously undetected dwarf galaxy hidden under a veil of dark ma ... more
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New 3-D model could solve supernova mystery
Giant stars die a violent death. After a life of several million years, they collapse into themselves and then explode in what is known as a supernova. How these stars explode remains a mystery. How ... more
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Starry surprise in the bulge: encounter of a halo passerby
A team led by Andrea Kunder from the Leibniz Institute for Astrophysics Potsdam (AIP) measured the velocity of a sample of 100 old RR Lyrae stars* thought to reside in the Galactic bulge, the centra ... more
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Dead galaxies in Coma Cluster may be packed with dark matter
Galaxies in a cluster roughly 300 million light years from Earth could contain as much as 100 times more dark matter than visible matter, according to an Australian study. The research used powerful ... more
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ALMA Greatly Improves Capacity to Search for Water in Universe
After more than five years of development and construction, ALMA successfully opened its eyes on another frequency range after obtaining the first fringes with a Band 5 receiver, specifically design ... more
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ALMA witnesses assembly of galaxies in the early universe
When the first galaxies started to form a few hundred million years after the Big Bang, the Universe was full of a fog of hydrogen gas. But as more and more brilliant sources - both stars and quasar ... more
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Seeing triple: New 3-D model could solve supernova mystery
Giant stars die a violent death. After a life of several million years, they collapse into themselves and then explode in what is known as a supernova. How these stars explode remains a mystery. How ... more
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Paranal and La Palma sites compete for massive gamma ray telescope array
On 15 and 16 July 2015, the Cherenkov Telescope Array (CTA) Resource Board decided to enter into detailed contract negotiations for hosting CTA on the European Southern Observatory (ESO) Paranal gro ... more
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Mass map shines light on dark matter
Dark matter may find it tougher to hide in our universe. An international team of researchers has developed a new map of the distribution of dark matter in the universe using data from the Dark Ener ... more
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A Dark Matter bridge in our cosmic neighborhood
By using the best available data to monitor galactic traffic in our neighborhood, Noam Libeskind from the Leibniz Institute for Astrophysics Potsdam (AIP) and his collaborators have built a detailed ... more
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What happens when cosmic giants meet galactic dwarfs?
When two different sized galaxies smash together, the larger galaxy stops the smaller one making new stars, according to a study of more than 20,000 merging galaxies. The research also found that wh ... more
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Biggest explosions in the universe powered by strongest magnets
Gamma-ray bursts are one of the outcomes associated with the biggest explosions to have taken place since the Big Bang. They are detected by orbiting telescopes that are sensitive to this type of hi ... more
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The dark side of galactic radio jets
Cosmic microwave radiation points to invisible 'dark matter', marking the spot where jets of material travel at near light speed, according to an international team of astronomers. Lead author Ruper ... more
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Super-bright supernova with extreme burst of gamma radiation
Astronomers from the Niels Bohr Institute have observed a super-bright supernova association with a very unusual long lasting gamma-ray burst. Gamma-ray bursts are in rare cases observed in connecti ... more
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A five star, doubly-eclipsing star system
Astronomers at the Open University have discovered the first quintuple star system containing two eclipsing binary stars. Details of the five star system, the first of its kind to be found, will be ... more
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NOAO: NGC 2346 - A Cosmic Butterfly's Delicate Wings
NOAO scientists, using the Gemini Observatory 8-meter telescope in Chile, have obtained the highest resolution image ever obtained for the planetary nebula NGC 2346. Shaped like a butterfly, or an h ... more
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    A galaxy in bloom
    The ghostly shells of galaxy ESO 381-12 are captured here in a new image from the NASA/ESA Hubble Space Telescope, set against a backdrop of distant galaxies. The strikingly uneven structure and the ... more
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    Huge new survey to shine light on dark matter
    Around 85% of the matter in the Universe is dark, and of a type not understood by physicists. Although it doesn't shine or absorb light, astronomers can detect this dark matter through its effect on ... more
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    Astronomers predict fireworks from rare stellar encounter in 2018
    Astronomers are gearing up for high-energy fireworks coming in early 2018, when a stellar remnant the size of a city meets one of the brightest stars in our galaxy. The cosmic light show will occur ... more
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    Dark matter map begins to reveal the universe's early history
    Researchers from the National Astronomical Observatory of Japan (NAOJ), the University of Tokyo and other institutions have begun a wide-area survey of the distribution of dark matter in the univers ... more
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    Stellar Sparklers That Last
    While fireworks only last a short time here on Earth, a bundle of cosmic sparklers in a nearby cluster of stars will be going off for a very long time. NGC 1333 is a star cluster populated with many ... more
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    Buried in the heart of a giant
    Discovered from England by the tireless observer Sir William Herschel on 20 November 1784, the bright star cluster NGC 2367 lies about 7000 light-years from Earth in the constellation Canis Major. H ... more
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    Using muons from cosmic rays to find fraying infrastructure
    In the United States, electricity comes with the flip of a switch and heat arrives with the push of a button. Behind such convenience lies a massive infrastructure network that produces and distribu ... more
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    Universe's first stars left unique chemical signatures
    Researchers at Lawrence Livermore National Laboratory are on the case of the missing alpha star signatures. Scientist Brian Bucher recently made a breakthrough in predicting what the universe's first generation of stars might look like - chemically speaking. ... more
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