Non-Detection of Polarized, Scattered Light from the HD 189733b Hot Jupiter

Abstract

Using the POLISH instrument, I am unable to reproduce the large-amplitude polarimetric observations of Berdyugina et al. (2008) to the >99.99% confidence level. I observe no significant polarimetric variability in the HD 189733 system, and the upper limit to variability from the exoplanet is Delta_P < 7.9 x 10^(-5) with 99% confidence in the 400 nm to 675 nm wavelength range. Berdyugina et al. (2008) report polarized, scattered light from the atmosphere of the HD 189733b hot Jupiter with an amplitude of two parts in 10^4. Such a large amplitude is over an order of magnitude larger than expected given a geometric albedo similar to other hot Jupiters. However, my non-detection of polarimetric variability phase-locked to the orbital period of the exoplanet, and the lack of any significant variability, shows that the polarimetric modulation reported by Berdyugina et al. (2008) cannot be due to the exoplanet.

24 pages, 8 figures, accepted for publication in ApJ

References in corpus (36)

• Catalog of Nearby Exoplanets
• Optical Images of an Exosolar Planet 25 Light Years from Earth
• A map of the day-night contrast of the extrasolar planet HD 189733b
• Improved parameters for extrasolar transiting planets
• Detection of atmospheric haze on an extrasolar planet: The 0.55 - 1.05 micron transmission spectrum of HD189733b with the Hubble Space Telescope
• Sodium Absorption From the Exoplanetary Atmosphere of HD189733b Detected in the Optical Transmission Spectrum
• The climate of HD 189733b from fourteen transits and eclipses measured by Spitzer
• Detection of transits of the nearby hot Neptune GJ 436 b
• The On/Off Nature of Star-Planet Interactions
• Retired A Stars and Their Companions: Exoplanets Orbiting Three Intermediate-Mass Subgiants
• Multi-Wavelength Constraints on the Day-Night Circulation Patterns of HD 189733b
• The phase-dependent Infrared brightness of the extrasolar planet upsilon Andromedae b
• Hubble Space Telescope times-series photometry of the planetary transit of HD189733: no moon, no rings, starspots
• The Very Low Albedo of an Extrasolar Planet: MOST Spacebased Photometry of HD 209458
• Spitzer Transit and Secondary Eclipse Photometry of GJ 436b
• The Transit Light Curve Project. V. System Parameters and Stellar Rotation Period of HD 189733
• Identification of Absorption Features in an Extrasolar Planet Atmosphere
• The Signature of Primordial Grain Growth in the Polarized Light of the AU Mic Debris Disk
• Accurate Spitzer infrared radius measurement for the hot Neptune GJ 436b
• The M Dwarf GJ 436 and its Neptune-Mass Planet
• Detection of a Temperature Inversion in the Broadband Infrared Emission Spectrum of TrES-4
• Spectropolarimetric observations of the transiting planetary system of the K dwarf HD 189733
• The Rotation Period of the Planet-Hosting Star HD 189733
• MOST detects variability on tau Bootis possibly induced by its planetary companion
• First detection of polarized scattered light from an exoplanetary atmosphere
• Direct detection of exoplanet host star companion gamma Cep B and revised masses for both stars and the sub-stellar object
• Determination of Black Hole Mass in Cyg X-1 by Scaling of Spectral Index-QPO Frequency Correlation
• Transit Photometry of the Core-Dominated Planet HD 149026b
• Discovery of an Optically Thick, Edge-on Disk around the Herbig Ae star PDS 144N
• Planetpol polarimetry of the exoplanet systems 55 Cnc and tau Boo
• The Transit Light Curve Project. VIII. Six Occultations of the Exoplanet TrES-3
• Looking for Super-Earths in the HD 189733 System: A Search for Transits in Most Space-Based Photometry
• A High Precision, Optical Polarimeter to Measure Inclinations of High Mass X-Ray Binaries
• Five New Transits of the Super-Neptune HD 149026
• Near-Infrared Imaging Polarimetry of Young Stellar Objects in rho-Ophiuchi
• On the orbital and physical parameters of the HDE 226868/Cygnus X-1 binary system

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• Polarized reflected light from the exoplanet HD189733b: First multicolor observations and confirmation of detection
• Experimental Design for the Gemini Planet Imager
• A Uniform Search for Secondary Eclipses of Hot Jupiters in Kepler Q2 Lightcurves
• A grid of polarization models for Rayleigh scattering planetary atmospheres
• The linear polarization of nearby bright stars measured at the parts per million level
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• A Ground-Based Albedo Upper Limit for HD 189733b from Polarimetry
• Polarized scattered light from self-luminous exoplanets. Three-dimensional scattering radiative transfer with ARTES
• The Dawes Review 3: The Atmospheres of Extrasolar Planets and Brown Dwarfs
• The linear polarisation of southern bright stars measured at the parts-per-million level
• The polarisation of HD 189733
• The intrinsic and interstellar broadband linear polarization of nearby FGK dwarfs
• Toward the Detection of Exoplanet Transits with Polarimetry
• Polarized Radiative Transfer in Planetary Atmospheres and the Polarization of Exoplanets
• Pre-conditioned Backward Monte Carlo solutions to radiative transport in planetary atmospheres. Fundamentals: Sampling of propagation directions in polarising media
• A Multiple Scattering Polarized Radiative Transfer Model: Application to HD 189733b
• Detecting Magnetic Fields in Exoplanets with Spectropolarimetry of the Helium Line at 1083 nm
• Orbital parameters of extrasolar planets derived from polarimetry
• The polarization of the planet-hosting WASP-18 system
• On the Inclination and Habitability of the HD 10180 System
• Cherenkov Telescopes as Optical Telescopes for Bright Sources: Today's Specialised Thirty Metre Telescopes?
• Polarization of hot Jupiter systems: a likely detection of stellar activity and a possible detection of planetary polarization
• Gemini Planet Imager Observational Calibrations VII: On-Sky Polarimetric Performance of the Gemini Planet Imager
• Exoplanetary Geophysics -- An Emerging Discipline
• Finding the UV-Visible Path Forward: Proceedings of the Community Workshop to Plan the Future of UV/Visible Space Astrophysics
• A comparison of spectroscopic methods for detecting starlight scattered by transiting hot Jupiters, with application to Subaru data for HD 209458b and HD 189733b
• On mapping exoplanet atmospheres with high-dispersion spectro-polarimetry. Some model predictions
• Predicting exoplanet observability in time, contrast, separation and polarization, in scattered light
• A Decade of Linear and Circular Polarimetry with the POLISH2 Polarimeter
• Computation of the transmitted and polarized scattered fluxes by the exoplanet HD 189733b in X-rays
• Modeling Multi-Wavelength Stellar Astrometry. III. Determination of the Absolute Masses of Exoplanets and Their Host Stars
• Illusion and Reality in the Atmospheres of Exoplanets
• O/IR Polarimetry for the 2010 Decade (GAN): Science at the Edge, Sharp Tools for All