Searching for nonsolar planets

Details Searching for nonsolar planets Searching for nonsolar planets

Apr 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979icar...38..136b&link_type=abstract

Icarus, vol. 38, Apr. 1979, p. 136-147.

Astronomy and Astrophysics

Astronomy

51

Astrometry, Extrasolar Planets, Infrared Astronomy, Radial Velocity, Velocity Measurement, Infrared Interferometers, Signal Detection, Star Trackers, Very Long Base Interferometry, Nonsolar Planets, Planets, Sun, Infrared, Origin, Observations, Astronomy, Spinning, Stars, Light (Visible Radiation), Heat Flow, Thermal Properties, Zodiacal Light, Jupiter

Scientific paper

The use of infrared techniques to search for nonsolar planets is examined and compared with other possible methods. Long focus astrometry, spectroscopic radial velocity measurements and spaceborne apodization all use visible light and need further refinement to be practical. Infrared offers an advantage of about 10 to the 5th over visible light as regards the ratio of power received from star and planet. Long baseline infrared interferometry from earth orbit could place an interferometric null on the star to enhance planetary radiation and a spinning interferometer would modulate planetary emission to permit synchronous detection; such an interferometer is illustrated. The limit to sensitivity would be set by thermal radiation to the detector and the infrared component of zodiacal light.

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