A Keck I/HIRES and TNG/SARG Radial Velocity Survey of Speckle Binary Stars

Details A Keck I/HIRES and TNG/SARG Radial Velocity Survey of Speckle Binary Stars A Keck I/HIRES and TNG/SARG Radial Velocity Survey of Speckle Binary Stars

Sep 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011ess.....2.2003r&link_type=abstract

American Astronomical Society, ESS meeting #2, #20.03

Astronomy and Astrophysics

Astronomy

Scientific paper

A sample of about 150 speckle binary stars was observed with the Keck I telescope and its echelle HIRES spectrograph over the years 2003-2007 in an effort to detect substellar and planetary companions to components of binary and multiple star systems. This data set was supplemented with the data obtained at the TNG telescope equipped with the SARG echelle spectrograph over the years 2006-2007. The high-resolution (R=65000 for HIRES and R=86000 for SARG) and high signal to noise (typically 75-150) spectra were used to derive radial velocities of the components of the observed speckle binaries. Here we present a summary of this effort which includes limits to planetary companions, new triple star systems and improved orbital solutions of a few known stellar systems.

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