The little cannibal
The little cannibal
Scientists from the K2 mission of Kepler space observatory (NASA) have found a small rocky object like a small planet or asteroid that is tearing as it spirals around a white dwarf star in the constellation of Virgo, confirming the theory that white dwarfs cannibalize possible planets your solar system."This is the first time we have seen a miniature planet shattered by the intense gravity of its star, vaporizing and hurling materials towards it," explains Andrew Vanderburg, of the Harvard-Smithsonian Center for Astrophysics in Cambridge (United States) and main author of the article that exposes this investigation.Image 1: Artistic representation of a small rocky body evaporating around a white dwarf. Credits: CfA / Mark A. Garlick.The disintegrating object, the size of a large asteroid, is the first planetary object confirmed in transit around a white dwarf. In transit, the small planet blocks up to 40 percent of the star's light, but it was noticeable that the light curve of the transit was not symmetrical, but more elongated on one side, which would indicate the presence of a tail. Debris ring mode that surrounds the star indicating that the small planet is vaporizing.In addition to the strange traffic, Vanderburg and his team found signs of heavy elements in the star's atmosphere when what is expected is that white dwarfs have chemically pure surfaces of hydrogen and helium. The fact of finding in this and other stars of this type elements such as calcium, silicon, magnesium or iron, may be due to the presence of disintegrating planets.If you like dwarf planets and gas jets, Do not forget to vote for me Awards Logbooks 2015!This research has been presented in an article of the journal Nature under the title "A disintegrating minor planet transiting to white dwarf", by A. Vanderburg et al.The team that has carried out the research consists of Andrew Vanderburg (Harvard-Smithsonian Center for Astrophysics, United States), John Asher Johnson (Harvard-Smithsonian Center for Astrophysics, United States), Saul Rappaport (Department of Physics-Kavli Institute for Astrophysics and Space Research / Massachusetts Institute of Technology, United States), Allyson Bieryla (Harvard-Smithsonian Center for Astrophysics, United States), Jonathan Irwin (Harvard-Smithsonian Center for Astrophysics, United States), John Arban Lewis (Harvard-Smithsonian Center for Astrophysics, United States), David Kipping (Harvard-Smithsonian Center for Astrophysics, United States, Department of Astronomy / Columbia University, United States), Warren R. Brown (Harvard-Smithsonian Center for Astrophysics, United States), Patrick Dufour (Institut de Recherche sur les Exoplanètes / Université de Montréal, Canada), David R. Ciardi (NASA Exoplanet Science Institute / California Institute of Technology, United States), Ruth Angus (Harvard-Smithsonian Center for Astrophysics, United States; Department of Physics / University of Oxford, United Kingdom), Laura Schaefer (Harvard-Smithsonian Center for Astrophysics, United States), David W. Latham (Harvard-Smithsonian Center for Astrophysics, United States), David Charbonneau (Harvard-Smithsonian Center for Astrophysics, United States), Charles Beichman (NASA Exoplanet Science Institute / California Institute of Technology, United States), Jason Eastman (Harvard-Smithsonian Center for Astrophysics, United States), Nate McCrady (Department of Physics and Astronomy / University of Montana, United States), Robert A. Wittenmyer (School of Physics-Australian Center for Astrobiology / University of New South Wales, Australia) and Jason T. Wright (Department of Astronomy and Astrophysics-Center for Exoplanets and Habitable Worlds / The Pennsylvania State University, U.S).Scientific article:- A disintegrating minor planet transiting to white dwarf (A. Vanderburg et al., 2015, Nature 526, 546-549)References:-Are you interested? Follow me also in Twitter.
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