Low Mass Companions (WF/PC-05)

Details Low Mass Companions (WF/PC-05) Low Mass Companions (WF/PC-05)

Jul 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990hst..prop.1109w&link_type=abstract

HST Proposal ID #1109

Other

Hst Proposal Id #1109

Scientific paper

The purpose of this observing program is the astrometric detection of Low Mass Companions, e.g., planets around stars other than our Sun. Astrometric observations of the stars are to be made to detect the periodic motion of the stars due to the influence of a planet around the star. The possibility of variations from pixel to pixel should be reduced by taking three exposures of each star field with an offset of a few pixels in the image location at each pointing. Each target field should be observed approximately every three months during the first year, and at maximum and minimum parallax positions during the following year. The observations during the guaranteed time will be the first of a series of observations of these stars to be taken over the lifetime of the Space Telescope. In combinations with ground-based observations, improvements to the parallaxes and proper motions will be investigated.

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