J. A. Eisner and S. R. Kulkarni 2002 ApJ 574 426 doi:10.1086/340940
J. A. Eisner1 and S. R. Kulkarni1
Show affiliationsThe astrometric and radial velocity techniques of extrasolar planet detection attempt to detect the periodic reflex motion of the parent star by extracting this periodic signal from a time-sampled set of observations. The extraction is generally accomplished using periodogram analysis or the functionally equivalent technique of least-squares fitting of sinusoids. In this paper, we use a frequentist approach to examine the sensitivity of the least-squares technique when applied to a combination of radial velocity and astrometric observations. We derive an analytical expression for the sensitivity and show that the combined approach yields significantly better sensitivity than either technique on its own. We discuss the ramifications of this result to upcoming astrometric surveys with the Full-Sky Astrometric Mapping Explorer, the Keck Interferometer, and the Space Interferometry Mission.
astrometry; planetary systems; techniques: radial velocities
Issue 1 (2002 July 20)
Received 2001 October 29, accepted for publication 2002 March 31
J. A. Eisner and S. R. Kulkarni 2002 ApJ 574 426
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Zhao Ke et al 2006 Chinese Phys. 15 2338
Kenneth Hong and Edward Teo 2003 Class. Quantum Grav. 20 3269
Stephen J McMahon et al 2008 Phys. Med. Biol. 53 5635
P Blaudeck et al 1992 J. Phys.: Condens. Matter 4 6389
P F Sharp et al 2004 Phys. Med. Biol. 49 1085
Jiang-Hui Ji et al 2009 Res. Astron. Astrophys. 9 703
A R Hamilton et al 2008 J. Phys.: Condens. Matter 20 164205
Jean-Noël Aqua and Michael E Fisher 2004 J. Phys. A: Math. Gen. 37 L241