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HST FGS astrometry – the value of fractional millisecond of arc precision
Published online by Cambridge University Press: 01 October 2007
Abstract
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In a few years astrometry with the venerable combination of Hubble Space Telescope and Fine Guidance Sensor 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 we 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.
- Type
- Contributed Papers
- Information
- Proceedings of the International Astronomical Union , Volume 3 , Symposium S248: A Giant Step: from Milli- to Micro-arcsecond Astrometry , October 2007 , pp. 23 - 29
- Copyright
- Copyright © International Astronomical Union 2008
References
McArthur, B. et al. 1997. in Proc. 1997 HST Calibration Workshop, ed. Casertano, S., Jedrzejewski, R., Keyes, T., and Stevens, M., STScI Publication, Baltimore, MDGoogle Scholar
McArthur, B. et al. 2002, The 2002 HST Calibration Workshop, Edited by Arribas, Santiago, Koekemoer, Anton, and Whitmore, Brad. Baltimore, MD: Space Telescope Science Institute, 2002, p.373Google Scholar
McArthur, B. E. et al. 2006, The 2005 HST Calibration Workshop: Hubble After the Transition to Two-Gyro Mode, 396Google Scholar
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