Astronomy and Astrophysics – Astronomy
Scientific paper
Jan 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21714416s&link_type=abstract
American Astronomical Society, AAS Meeting #217, #144.16; Bulletin of the American Astronomical Society, Vol. 43, 2011
Astronomy and Astrophysics
Astronomy
Scientific paper
We estimate the fraction of stars that are binaries and have a large enough motion of the center of light relative to the center of mass of the system, larger than 1 mas, to significantly affect the astrometric accuracy of the Joint Milli-Arcsecond Pathfinder Survey (JMAPS). These calculations were done using information about the observed distribution of spectral types, the frequency of binary systems as a function of spectral type, their mass ratios and period distributions. We find that, for systems with periods smaller than 10 years, approximately 12 percent of the stars with I=2 mag will have a motion of the center of light relative to the center of mass larger than 1 mas, decreasing to less than 1 percent for stars with I=14 mag. We explore the effects of reddening, orbital eccentricity, and different distributions of spectral types, to these fractions. These results are compared with the fraction of binary stars detected by the Hipparcos satellite.
Hindsley Robert B.
Lane Benjamin F.
Schmitt Henrique R.
No associations
LandOfFree
Estimating the Fraction of Binaries Affecting the JMAPS Astrometry does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Estimating the Fraction of Binaries Affecting the JMAPS Astrometry, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Estimating the Fraction of Binaries Affecting the JMAPS Astrometry will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1394611