Determining Photocenter Contamination in Interacting Binaries with SIM-Lite

Details Determining Photocenter Contamination in Interacting Binaries with SIM-Lite Determining Photocenter Contamination in Interacting Binaries with SIM-Lite

May 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21441106g&link_type=abstract

American Astronomical Society, AAS Meeting #214, #411.06; Bulletin of the American Astronomical Society, Vol. 41, p.676

Astronomy and Astrophysics

Astronomy

Scientific paper

We are investigating how SIM-Lite can best be utilized to attain accurate masses for the primary and secondary stars in interacting binary systems. As most of these systems are too distant for ground-based astrometric measurements of their reflex motions, SIM-Lite will allow for astrometric measurements for a wide variety of interacting binary star systems. Difficulties in making these measurements arise due to the effects of multiple luminosity components (accretion disks, streams, hotspots, etc.) on the apparent photocenter of the system and its apparent motion. Photocenter contamination is an issue that affects nearly all interacting binaries. This work will allow us to quantify the effect of photocenter contamination, extract true orbital parameters, and determine masses of the interacting binary stellar components.

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