Cool Stars 14 - Submitted Abstract # 295
This version created on 05 October 2006

First High-Contrast Science with an IFU:  the Sub-Stellar Companion to
GQ Lup


Michael McElwain, UC Los Angeles
Stanimir Metchev, UC Los Angeles
James Larkin, UC Los Angeles
Matthew Barczys, UC Los Angeles
Jason Weiss, UC Los Angeles
Shelley Wright, UC Los Angeles 
Alfred Krabbe, University of Cologne 
Christof Iserlohe, University of Cologne
Andreas Quierrenbach, University of Heidelberg

We present high-contrast integral field spectroscopy with Keck
AO+OSIRIS of the young star GQ Lup and its close-in sub-stellar
companion - claimed to be the first, and only, planet directly imaged
around a hydrogen-burning star.  By enabling two-dimensional sampling
of the bright halo of the primary, OSIRIS allows us to accurately
estimate the host-star contamination in the spectrum of the
sub-stellar companion - an otherwise challenging task for conventional
AO slit spectroscopy in the constrast-limited regime.  Our OSIRIS
spectra do not confirm the planetary-mass status of GQ Lup B.
However, we suggest an approach for improving the sensitivity of
conventional AO surveys for sub-stellar companions using integral
field spectroscopy.  

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