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June 26, 2015 04:00 am
Original Link: http://rss.slashdot.org/~r/Slashdot/slashdot/~3/jF0bY_OnvKM/stellar-rejuvenation-some-exoplanets-may-get-facelifts
Stellar Rejuvenation: Some Exoplanets May Get Facelifts
astroengine writes: Astronomers may have discovered an exoplanet that has found the elixir to planetary youth, knocking billions of years off its age. Until now, stellar rejuvenation has been pure conjecture, but after studying a white dwarf star called PG 0010+280, it turns out that one very interesting explanation for an excess in detected infrared radiation may be down to the presence of an exoplanet that was given a facelift. "When planets are young, they still glow with infrared light from their formation," said Michael Jura of the University of California, Los Angeles, co-author of the study published in The Astrophysical Journal. "But as they get older and cooler, you can't see them anymore. Rejuvenated planets would be visible again." This rejuvenation happens when stellar material shedding from a dying red giant star falls onto an exoplanet, causing heating and making it appear younger.Read more of this story at Slashdot.
Original Link: http://rss.slashdot.org/~r/Slashdot/slashdot/~3/jF0bY_OnvKM/stellar-rejuvenation-some-exoplanets-may-get-facelifts
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