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We describe our HST/NICMOS imaging
search of giant planets around white dwarfs, especially in the 625
Myr old Hyades cluster.
Searches around nearby field white dwarfs with VLT/NACO and with
Spitzer will also be described. No definite positive result has
emerged so far (limiting mass 5 M_Jup at 0.5 arcsec), but white
dwarfs remain very promising targets to find the first
self-luminous, resolved gas planet around any star. It is reassuring
that radial velocity data have revealed cases of gas giant planets
around red giant stars, the progenitors of white dwarfs. |
