Ultracool Brown Dwarfs and Massive Planets Around Nearby White Dwarfs

Details Ultracool Brown Dwarfs and Massive Planets Around Nearby White Dwarfs Ultracool Brown Dwarfs and Massive Planets Around Nearby White Dwarfs

Sep 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004sptz.prop.3549b&link_type=abstract

Spitzer Proposal ID #3549

Computer Science

Scientific paper

White dwarfs are excellent targets for ultracool brown dwarf and massive planet searches. These Earth-size stars have intrinsically low luminosities and provide very high contrast when looking for Jupiter-size companions in the infrared. A few brown dwarfs are seen around white dwarfs and planets are seen around their progenitors. Spitzer/IRAC will enable an infrared survey of these faint post main sequence stars which is impossible from the ground due to a large thermal background. Sensitivities are sufficient to detect sub T dwarf brown dwarfs and planets having temperatures as low as 300 K. At our greatest sensitivity we will be able to image orbiting bodies with masses as small as five Jupiters - providing an opportunity to directly image extrasolar planets.

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