Astronomy and Astrophysics – Astrophysics
Scientific paper
2003-08-23
Mon.Not.Roy.Astron.Soc.346:890,2003
Astronomy and Astrophysics
Astrophysics
7 pages, 14 figures, MNRAS accepted 22 August 2003
Scientific paper
10.1111/j.1365-2966.2003.07139.x
High-resolution spectroscopic searches for the starlight reflected from close-in extra-solar giant planets have the capability of determining the optical albedo spectra and scattering properties of these objects. When combined with radial velocity measurements they also yield the true mass of the planet. To date, only two such planets have been targeted for reflected-light signals, yielding upper limits on the planets' optical albedos. Here we examine the prospects for future searches of this kind. We present Monte Carlo estimates of prior probability distributions for the orbital velocity amplitudes and planet/star flux ratios of 6 bright stars known to harbour giant planets in orbits with periods of less than 5 days. Using these estimates, we assess the viability of these targets for future reflected-light searches using 4m and 8m-class telescopes.
Collier Cameron Andrew
Guillot Tristan
Leigh Catherine
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