Events in Physics
Wednesday, December 09, 2015
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Departmental Open DayConcourse, PLT |
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SiYi Xu (European Southern Observatory)PS1.28Disintegration of Asteroids Around White Dwarfs I will focus on the recent discovery of a very interesting white dwarf system that has: (i) an infrared excess from an orbiting dust disk; (ii) atmospheric pollution from accretion of planetary material; (iii) eclipses from six or more transiting asteroids, all within the white dwarf’s tidal radius; (iii) cool circumstellar gas, likely from collisions among the asteroids. I will also discuss how this object fit into our overall understanding of the fate of planetary systems around white dwarfs. |
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TBAPLT |