PI: Alan Hulsebus, Iowa State U., firstname.lastname@example.org
Address: Department of Physics and Astronomy, Ames, IA, 50011-3160 USA
CoI: Massimo Marengo, Iowa State U.
CoI: Joseph Carson, College of Charleston
Title: Follow-up Spectroscopy for Common-Proper-Motion T-Dwarf Companion Candidate
Abstract: We propose to obtain GNIRS spectroscopy of a T-Dwarf candidate companion of the planet-host star HD 23596. Confirming this to be a physical companion of the star would help explain the high eccentricity of the known RV planet HD 23596b (e=0.3). We have previously observed this object with Spitzer/IRAC in two epochs and determined it to have Near-IR colors consistent with a T3.5 dwarf and similar proper motion to HD 23596. The candidate is separated from the primary star by 1.9' and its expected J-band magnitude is ~21. We request 3 hours total exposure time to have sufficient S/N to characterize the spectral type of the source and confirm its brown dwarf nature.
Program Type: Standard/Galactic
Run 1 (2016B): GEM-NQ/GNIRS -- 3.8hrs band 2 (GN-2016B-Q-42)
National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360