PALM-3000 survey

http://arxiv.org/abs/1012.0008

Quote :

In the initial phase of observations at Palomar observatory from 2008-10, we have observed 160 stars, with a heavy focus (35%) on A-stars. G stars (25%), F stars (18%) and K stars (13%) formed the bulk of the remaining sample, while a mixture of B-stars and M dwarfs comprised the rest.
Initial results, including spectra for the companion zeta Virginis b, shown in Figure 10 (Hinkley et al. 2010), and Figure 12 for Alcor b (Zimmerman et al. 2010) from this early phase of data taking have been published or are in process.
We anticipate undertaking a much larger, 100-night survey over five years using the PALM-3000 AO system beginning in 2011. Although the AO system will offer superior correction for V < 8 stars, the system can correct on fainter targets with a coarser sampling of the pupil than the nominal 63×63 subaperture sampling. Nonetheless, the primary goal for this portion of the survey will be oriented towards the 335 stars with V < 8 and within 25pc.

Note that the companions of Alcor and zeta Virginis are both stars, not planetary companions.