Planet Searches via L and M Imaging

Details Planet Searches via L and M Imaging Planet Searches via L and M Imaging

May 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21423002h&link_type=abstract

American Astronomical Society, AAS Meeting #214, #230.02; Bulletin of the American Astronomical Society, Vol. 41, p.733

Astronomy and Astrophysics

Astronomy

Scientific paper

Using the MMT deformable secondary AO system, we have carried out surveys of nearby stars at 3.8 microns (L') and 4.8 microns wavelength. These longer wavelength surveys have the potential to be sensitive to cooler, and thus older or lower mass planets, compared to surveys at shorter wavelengths. Three separate programs have focused on low-mass, solar-mass, and intermediate mass stars, to understand potential variations in lanet frequency versus host star. Most observations are carried out via direct imaging. An improved sensitivity at small inner working angles has been demonstrated with an Apodizing Phase Plate, and is being used to survey into the "ice-line" around nearby stars.

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