NOAO >   Observing Info >   Approved Programs >   2011B-0310

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Proposal Information for 2011B-0310


PI: Christian Marois, Herzberg Institute of Astrophysics, christian.marois@nrc-cnrc.gc.ca
Address: National Research Council of Canada, 5071 West Saanich Road, RR. 5, Victoria, British Columbia, V9E 2E7, Canada

CoI: Bruce Macintosh, Lawrence Livermore National Laboratory
CoI: Raphael Galicher, Herzberg Institute of Astrophysics
CoI: Travis Barman, Lowell Observatory
CoI: Quinn Konopacky, Lawrence Livermore National Laboratory
CoI: Ben Zuckerman, UC Los Angeles

Title: Altair/NIRI L-band Imaging of a Fifth Planet Around HR 8799

Abstract: Four planets have been directly imaged around HR 8799. A new analysis of our recent 2009-2010 Keck Lp-band observations shows a new candidate planet "f" (7 MJup for 30 Myr). We propose to confirm this candidate planet by observing HR 8799 with Altair/NIRI at Lp-band. The Gemini unique queue scheduling is required to perform this research given that several HR 8799 transits with decent seeing are required to confirm this candidate. If confirmed, the existence of planet f will (1) lower planet mass upper limits obtained from a system dynamical stability analysis, (2) better constraint the mass-luminosity evolutionary model predictions and (3) complicate the system formation scenario by adding an additional planet in the core accretion formation region located close (< 35 AU) to the star.


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NOAO >   Observing Info >   Approved Programs >   2011B-0310

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