To determining the mass of a gravitational body with micro-arcsecond astrometric data

Details To determining the mass of a gravitational body with micro-arcsecond astrometric data To determining the mass of a gravitational body with micro-arcsecond astrometric data

Jul 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008iaus..248..264c&link_type=abstract

A Giant Step: from Milli- to Micro-arcsecond Astrometry, Proceedings of the International Astronomical Union, IAU Symposium, Vol

Astronomy and Astrophysics

Astronomy

Stars: Fundamental Parameters (Masses), Stars: Kinematics, Gravitation

Scientific paper

A beam of light from a background source to an observer is deflected by a gravitational body when travelling through the space in its vicinity. The deflection changes with configuration of the background source, the gravitational body and the observer, and the amount of deflection is dependent on the gravitational body's mass. It is anticipated that its mass could be determined if the shift can be measured by future precise astrometric projects such as Gaia or SIM-PlanetQuest.

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