Astrometry with the Hubble Space Telescope

Details Astrometry with the Hubble Space Telescope Astrometry with the Hubble Space Telescope

May 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008dda....39.1101b&link_type=abstract

American Astronomical Society, DDA meeting #39, #11.01

Astronomy and Astrophysics

Astronomy

Scientific paper

In a few years astrometry with the Fine Guidance Sensors on Hubble Space Telescope will be replaced by SIM, GAIA, and long-baseline interferometry. Until then we remain a resource of choice for sub-millisecond of arc precision optical astrometry. As examples I discuss 1) the uses which can be made of our parallaxes of galactic Cepheids, and 2) the determination of perturbation orbital elements for several exoplanet host stars, yielding true companion masses. Future results will include a calibration of the Pop II Period-Luminosity relation and tests of exoplanetary system coplanarity.

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