On the feasibility of detecting extrasolar planets by reflected starlight using the Hubble Space Telescope

Details On the feasibility of detecting extrasolar planets by reflected starlight using the Hubble Space Telescope On the feasibility of detecting extrasolar planets by reflected starlight using the Hubble Space Telescope

Oct 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990icar...87..484b&link_type=abstract

Icarus (ISSN 0019-1035), vol. 87, Oct. 1990, p. 484-497.

Physics

34

Extrasolar Planets, Hubble Space Telescope, Point Spread Functions, Stellar Radiation, Light Scattering, Reflectance, Star Formation, Telescopes

Scientific paper

The best metrology data extant are presently used to estimate the center and wing point-spread function of the HST, in order to ascertain the implications of an observational criterion according to which a faint source's discovery can occur only when the signal recorded near its image's location is sufficiently larger than would be expected in its absence. After defining the maximum star-planet flux ratio, a figure of merit Q, defined as the contrast ratio between a 'best case' planet and the scattered starlight background, is introduced and shown in the HST's case to be unfavorable for extrasolar planet detection.

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