A New Approach for Finding Planets and Brown Dwarfs Around White Dwarfs

Details A New Approach for Finding Planets and Brown Dwarfs Around White Dwarfs A New Approach for Finding Planets and Brown Dwarfs Around White Dwarfs

May 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008sptz.prop..474k&link_type=abstract

Spitzer Proposal ID #474

Computer Science

Scientific paper

I propose to search for sub-stellar and planetary mass companions to low mass white dwarfs through direct imaging in the infrared. Recent discoveries of single low mass white dwarfs in the open cluster NGC 6791 and in the solar neighborhood imply that these low mass white dwarfs should form from metal-rich stars through extreme mass loss. Since 25% of the super-solar metallicity stars host gas giant planets, I expect a similar fraction of their descendants, single low mass white dwarfs, to have planetary mass companions as well. The results of this study will have a significant impact on understanding the evolution of planetary systems through the late stages of stellar evolution. Even the lack of any discoveries from our study will be important to show that single low mass white dwarfs actually exist in the Galaxy.

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