NOAO >   Observing Info >   Approved Programs >   2017B-0273

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Program Information for 2017B-0273


PI: Rebecca Jensen-Clem, California Institute of Technology, rmjc@astro.caltech.edu
Address: MC 249-17, 1200 EAST CALIFORNIA BLVD, PASADENA, CA 91125 USA

CoI: Dimitri Mawet, California Institute of Technology
CoI: Max Millar-Blanchaer, CalTech-JPL
CoI: James Graham, UC Berkeley
CoI: Heather Knutson, IPAC
CoI: Marshall Perrin, STScI
CoI: Sloane Wiktorowicz, Aerospace Corporation

Title: The first detection of polarized radiation from exoplanets: HR8799cd

Abstract: We request 3.0 hours using GPI’s H-band polarimetry mode to obtain the first detection of polarized light from an exoplanet. Observational and theoretical studies of field L-dwarfs indicate that these objects produce polarization signals of order 1% in the near infrared due to rotationally-induced oblateness, patchy and dusty atmospheres, or a combination of these effects. Recent observations with GPI verify that such a signal is well within the instrument’s polarization sensitivity. Such a detection will unlock a new observable for the characterization of exoplanet atmospheres.

Program Type: Standard/Galactic

Scheduled Nights:
Run 1 (2017B):  GEM-SQ/GPI -- 4.7hrs band 1 (GS-2017B-Q-17)


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



NOAO >   Observing Info >   Approved Programs >   2017B-0273

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