On Again, Off Again Exoplanet Fomalhaut b is Back from the Dead
This visible-light image from the Hubble Space Telescope shows the vicinity of the star Fomalhaut, including the location of its dust ring and disputed planet, Fomalhaut b. A coronagraphic mask helped dim the star’s brightness. This view combines two 2006 observations that were taken with masks of different sizes (1.8 and 3 arcseconds). (Credit: NASA/ESA/T. Currie, U. Toronto)
Just in time for Halloween, astronomers are bringing an extrasolar planet back from the dead. Another look at the nearby star Fomalhaut reveals that a planet, named Fomalhaut b, is actually, really there, refuting a previous claim against its existence. In 2008, it was announced that a large, Saturn mass planet shepherded a large dust ring and was spotted in visual images from Hubble, and was said to be the first exoplanet ever directly imaged in visible light around another star. But in late 2011 infrared observations called the previous detections into question. A new analysis of data from Hubble, however, brings the planet conclusion back to life.
It’s like a zombie planet that just won’t die.
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© nancy for Universe Today, 2012. | Permalink | One comment |
Post tags: Extrasolar Planets, Fomalhaut
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2012-10-26 07:44:32
Source: http://www.universetoday.com/98193/on-again-off-again-exoplanet-fomalhaut-b-is-back-from-the-dead/
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