September 13, 2013
Mohenjo
Science
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Two groups of astronomers have used data from ESO telescopes to make the best three-dimensional map yet of the central parts of the Milky Way. They have found that the inner regions take on a peanut-like, or X-shaped, appearance from some angles. This odd shape was mapped by using public data from ESO’s VISTA survey telescope along with measurements of the motions of hundreds of very faint stars in the central bulge.
One of the most important and massive parts of the galaxy is the galactic bulge. This huge central cloud of about 10 000 million stars spans thousands of light-years, but its structure and origin were not well understood.
Unfortunately, from our vantage point from within the galactic disc, the view of this central region — at about 27 000 light-years’ distance — is heavily obscured by dense clouds of gas and dust. Astronomers can only obtain a good view of the bulge by observing longer wavelength light, such as infrared radiation, which can penetrate the dust clouds.
Earlier observations from the 2MASS infrared sky survey had already hinted that the bulge had a mysterious X-shaped structure. Now two groups of scientists have used new observations from several of ESO’s telescopes to get a much clearer view of the bulge’s structure.
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July 12, 2013
Mohenjo
Science
amazon, business, european southern observatory, Hotels, huffingtonpost, mass of the sun, Massive Monster Star, Massive Star Birth, Massive Star Milky Way, Massive Star Milky Way Birth, massive stars, Milky Way, Milky Way Massive Star, Milky Way Star, millimeter array, Monster Star, Monster Star Birth, Monster Star Formation Photo, Most Massive Star Milky Way, research, Science, Science News, Slideshow, spectacular sight, Star 100 Times Massive Sun, star formation, Star Formation Milky Way, technology, Technology News, travel, vacation, Video
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Astronomers witnessed a spectacular sight recently when they spotted an embryonic “monster” star in the Milky Way. Though the star is still forming, it’s expected to grow to become 100 times the mass of the sun, which would make it one of the galaxy’s most massive stars.
The photo of this monster star in the Milky Way was quite a feat for scientists at the Atacama Large Millimeter/sub-millimeter Array (ALMA) astronomy facility since the birth of such a large star is not often witnessed, let alone captured in a photo.
The star formation is located 11,000 light years from Earth in a stellar womb that is estimated to encompass 500 times the mass of the sun. In a photo of the formation, provided by the European Southern Observatory, the Milky Way’s monster star appears as a yellow blob in the center of the “womb.”
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http://www.huffingtonpost.com/2013/07/10/monster-star-milky-way-photos_n_3573794.html?ref=topbar
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