Now showing items 1-20 of 41

  • Accuracy of stellar parameters of exoplanet-host stars determined from asteroseismology 

    Mulet-Marquis, C.; Baraffe, I.; Aigrain, Suzanne; Pont, F. (EDP Sciences, 2009)
    Context. In the context of the space-based mission CoRoT, devoted to asteroseismology and search for planet transits, we analyse the accuracy of fundamental stellar parameters (mass, radius, luminosity) that can be obtained ...
  • Comparative blind test of five planetary transit detection algorithms on realistic synthetic light curves 

    Moutou, C.; Pont, F.; Barge, P.; Aigrain, Suzanne; Auvergne, M.; Blouin, D.; Cautain, R.; Erikson, A.; Guis, V.; Guterman, P.; Irwin, M.; Lanza, A. F.; Queloz, D.; Rauer, H.; Voss, H.; Zucker, S. (EDP Sciences, 2005)
    Because photometric surveys of exoplanet transits are very promising sources of future discoveries, many algorithms are being developed to detect transit signals in stellar light curves. This paper compares such algorithms ...
  • The Deep Blue Color of HD 189733b: Albedo Measurements with Hubble Space Telescope/Space Telescope Imaging Spectrograph at Visible Wavelengths 

    Evans, T.M.; Pont, F.; Sing, David K.; Aigrain, Suzanne; Barstow, Joanna K.; Desert, J.-M.; Gibson, N.; Heng, Kevin; Knutson, H.; Lecavelier des Etangs, A. (IOP Publishing, 2013)
    We present a secondary eclipse observation for the hot Jupiter HD 189733b across the wavelength range 290-570 nm made using the Space Telescope Imaging Spectrograph on the Hubble Space Telescope. We measure geometric albedos ...
  • Detection of atmospheric haze on an extrasolar planet: The 0.55-1.05 μm transmission spectrum of HD 189733b with the Hubble Space Telescope 

    Pont, F.; Knutson, H.; Gilliland, R.L.; Moutou, C.; Charbonneau, D. (Oxford University Press / Royal Astronomical Society, 2008)
    The nearby transiting planet HD 189733b was observed during three transits with the Advanced Camera for Surveys of the Hubble Space Telescope in spectroscopic mode. The resulting time-series of 675 spectra covers the ...
  • The Earth as an extrasolar transiting planet: Earth's atmospheric composition and thickness revealed by Lunar eclipse observations 

    Vidal-Madjar, A.; Arnold, L.; Ehrenreich, D.; Ferlet, R.; Lecavelier des Etangs, A.; Bouchy, F.; Segransan, D.; Boisse, I.; Hebrard, G.; Moutou, C.; Desert, J.-M.; Sing, David K.; Cabanac, R.; Nitschelm, C.; Bonfils, X.; Delfosse, X.; Desort, M.; Diaz, R.F.; Eggenberger, A.; Forveille, T.; Lagrange, A.-M.; Lovis, C.; Pepe, F.; Perrier, C.; Pont, F.; Santos, N.C.; Udry, S. (EDP Sciences for European Southern Observatory (ESO), 2010)
    Context. An important goal within the quest for detecting an Earth-like extrasolar planet, will be to identify atmospheric gaseous bio-signatures. Aims. Observations of the light transmitted through the Earth’s atmosphere, ...
  • Gran Telescopio Canarias OSIRIS transiting exoplanet atmospheric survey: Detection of potassium in XO-2b from narrowband spectrophotometry 

    Sing, David K.; Desert, J.-M.; Fortney, J.J.; Lecavelier des Etangs, A.; Ballester, G.; Cepa, J.; Ehrenreich, D.; Lopez-Morales, M.; Pont, F.; Shabram, M.; Vidal-Madjar, A. (EDP Sciences, 2011)
    We present Gran Telescopio Canarias (GTC) optical transit narrowband photometry of the hot-Jupiter exoplanet XO-2b using the OSIRIS instrument. This unique instrument has the capabilities to deliver high-cadence narrowband ...
  • GTC OSIRIS transiting exoplanet atmospheric survey: detection of potassium in HAT-P-1b from narrow-band spectrophotometry 

    Wilson, Paul A.; Sing, David K.; Nikolov, N.; Lecavelier des Etangs, A.; Pont, F.; Fortney, J.J.; Ballester, G.; Desert, J.-M.; Vidal-Madjar, A. (Oxford University Press for Royal Astronomical Society, 2015-04-15)
    We present the detection of potassium in the atmosphere of HAT-P-1b using optical transit narrow-band photometry. The results are obtained using the 10.4-m Gran Telescopio Canarias together with the OSIRIS instrument in ...
  • GTC OSIRIS transiting exoplanet atmospheric survey: Detection of sodium in XO-2b from differential long-slit spectroscopy 

    Sing, David K.; Huitson, Catherine M.; Lopez-Morales, M.; Pont, F.; Desert, J.-M.; Ehrenreich, D.; Wilson, Paul A.; Ballester, G.; Fortney, J.J.; Lecavelier des Etangs, A.; Vidal-Madjar, A. (Oxford University Press on behalf of the Royal Astronomical Society, 2012)
    We present two transits of the hot-Jupiter exoplanet XO-2b using the Gran Telescopio Canarias (GTC). The time series observations were performed using long-slit spectroscopy of XO-2 and a nearby reference star with the ...
  • HST hot Jupiter transmission spectral survey: detection of water in HAT-P-1b from WFC3 near-IR spatial scan observations 

    Wakeford, H.R.; Sing, David K.; Deming, D.; Gibson, N.; Fortney, J.J.; Burrows, A.S.; Ballester, G.; Nikolov, N.; Aigrain, Suzanne; Henry, G.; Knutson, H.; Lecavelier des Etangs, A.; Pont, F.; Showman, A.P.; Vidal-Madjar, A.; Zahnle, K. (Oxford University Press on behalf of the Royal Astronomical Society, 2013)
    We present Hubble Space Telescope near-infrared transmission spectroscopy of the transiting hot-Jupiter HAT-P-1b. We observed one transit with Wide Field Camera 3 using the G141 low-resolution grism to cover the wavelength ...
  • HST hot-Jupiter transmission spectral survey: detection of potassium in WASP-31b along with a cloud deck and Rayleigh scattering 

    Sing, David K.; Wakeford, H.R.; Showman, A.P.; Nikolov, N.; Fortney, J.J.; Burrows, A.S.; Ballester, G.; Deming, D.; Aigrain, Suzanne; Desert, J.-M.; Gibson, N.; Henry, G.; Knutson, H.; Lecavelier des Etangs, A.; Pont, F.; Vidal-Madjar, A.; Williamson, M.W.; Wilson, Paul A. (Oxford University Press on behalf of the Royal Astronomical Society, 2015)
    We present Hubble Space Telescope optical and near-IR transmission spectra of the transiting hot-Jupiter WASP-31b. The spectrum covers 0.3–1.7 μm at a resolution R ∼ 70, which we combine with Spitzer photometry to cover ...
  • HST hot-Jupiter transmission spectral survey: Evidence for aerosols and lack of TiO in the atmosphere of WASP-12b 

    Sing, David K.; Lecavelier des Etangs, A.; Fortney, J.J.; Burrows, A.S.; Pont, F.; Wakeford, H.R.; Ballester, G.; Nikolov, N.; Henry, G.; Aigrain, Suzanne; Deming, D.; Evans, T.M.; Gibson, N.; Huitson, Catherine M.; Knutson, H.; Showman, A.P.; Vidal-Madjar, A.; Wilson, Paul A.; Williamson, M.H.; Zahnle, K. (Oxford University Press on behalf of the Royal Astronomical Society, 2013)
    We present Hubble Space Telescope (HST) optical transmission spectra of the transiting hot-Jupiter WASP-12b, taken with the Space Telescope Imaging Spectrograph instrument. The resulting spectra cover the range 2900–10 300 Å ...
  • HST hot-Jupiter transmission spectral survey: Haze in the atmosphere of WASP-6b 

    Nikolov, N.; Sing, David K.; Burrows, A.S.; Fortney, J.J.; Henry, G.; Pont, F.; Ballester, G.; Aigrain, Suzanne; Wilson, Paul A.; Huitson, Catherine M.; Gibson, N.; Desert, J.-M.; Lecavelier des Etangs, A.; Showman, A.P.; Vidal-Madjar, A.; Wakeford, H.R.; Zahnle, K. (Oxford University Press on behalf of the Royal Astronomical Society, 2014)
    We report Hubble Space Telescope optical to near-infrared transmission spectroscopy of the hot-Jupiter WASP-6b, measured with the Space Telescope Imaging Spectrograph and Spitzer's InfraRed Array Camera. The resulting ...
  • An HST optical-to-near-IR transmission spectrum of the hot Jupiter WASP-19b: detection of atmospheric water and likely absence of TiO 

    Huitson, Catherine M.; Sing, David K.; Pont, F.; Fortney, J.J.; Burrows, A.S.; Wilson, Paul A.; Ballester, G.; Nikolov, N.; Gibson, N.; Deming, D.; Aigrain, Suzanne; Evans, T.M.; Henry, G.; Lecavelier des Etangs, A.; Showman, A.P.; Vidal-Madjar, A.; Zahnle, K. (Oxford University Press / Royal Astronomical Society, 2013)
    We measure the transmission spectrum of WASP-19b from three transits using low-resolution optical spectroscopy from the Hubble Space Telescope (HST) Space Telescope Imaging Spectrograph (STIS). The STIS spectra cover a ...
  • Hubble Space Telescope hot Jupiter transmission spectral survey: A detection of Na and strong optical absorption in HAT-P-1b 

    Nikolov, N.; Sing, David K.; Pont, F.; Burrows, A.S.; Fortney, J.J.; Ballester, G.; Evans, T.M.; Huitson, Catherine M.; Wakeford, H.R.; Wilson, Paul A.; Aigrain, Suzanne; Deming, D.; Gibson, N.; Henry, G.; Knutson, H.; Lecavelier des Etangs, A.; Showman, A.P.; Vidal-Madjar, A.; Zahnle, K. (Oxford University Press / Royal Astronomical Society, 2013)
    We present an optical to near-infrared transmission spectrum of the hot Jupiter HAT-P-1b, based on Hubble Space Telescope observations, covering the spectral regime from 0.29 to 1.027 μm with Space Telescope Imaging ...
  • Hubble Space Telescope transmission spectroscopy of the exoplanet HD 189733b: high-altitude atmospheric haze in the optical and near-ultraviolet with STIS 

    Sing, David K.; Pont, F.; Aigrain, Suzanne; Charbonneau, D.; Desert, J.-M.; Gibson, N.; Gilliland, R.L.; Hayek, W.; Henry, G.; Knutson, H.; Lecavelier des Etangs, A.; Mazeh, T.; Shporer, A. (Oxford University Press / Royal Astronomical Society, 2011)
    We present Hubble Space Telescope (HST) optical and near-ultraviolet transmission spectra of the transiting hot Jupiter HD 189733b, taken with the repaired Space Telescope Imaging Spectrograph (STIS) instrument. The resulting ...
  • Limb darkening laws for two exoplanet host stars derived from 3D stellar model atmospheres: Comparison with 1D models and HST light curve observations 

    Hayek, W.; Sing, David K.; Pont, F.; Asplund, M. (EDP Sciences for European Southern Observatory (ESO), 2012)
    We compare limb darkening laws derived from 3D hydrodynamical model atmospheres and 1D hydrostatic MARCS models for the host stars of two well-studied transiting exoplanet systems, the late-type dwarfs HD 209458 and HD ...
  • Noise properties of the CoRoT data. A planet-finding perspective 

    Aigrain, Suzanne; Pont, F.; Fressin, F.; Alapini, Aude; Alonso, R.; Auvergne, M.; Barbieri, M.; Barge, P.; Bordé, P.; Bouchy, F.; Deeg, H. J.; De la Reza, R.; Deleuil, M.; Dvorak, R.; Erikson, A.; Fridlund, M.; Gondoin, P.; Guterman, P.; Jorda, L.; Lammer, H.; Léger, A.; Llebaria, A.; Magain, P.; Mazeh, T.; Moutou, C.; Ollivier, M.; Pätzold, M.; Queloz, D.; Rauer, H.; Rouan, D.; Schneider, J.; Wuchterl, G.; Zucker, S. (EDP Sciences, 2009)
    In this short paper, we study the photometric precision of stellar light curves obtained by the CoRoT satellite in its planet-finding channel, with a particular emphasis on the time scales characteristic of planetary ...
  • Observation of the full 12-hour-long transit of the exoplanet HD80606b: Warm-Spitzer photometry and SOPHIE spectroscopy 

    Hebrard, G.; Desert, J.-M.; Diaz, R.F.; Boisse, I.; Bouchy, F.; Lecavelier des Etangs, A.; Moutou, C.; Ehrenreich, D.; Arnold, L.; Bonfils, X.; Delfosse, X.; Desort, M.; Eggenberger, A.; Forveille, T.; Gregorio, J.; Lagrange, A.-M.; Lovis, C.; Pepe, F.; Perrier, C.; Pont, F.; Queloz, D.; Santerne, A.; Santos, N.C.; Segransan, D.; Sing, David K.; Udry, S.; Vidal-Madjar, A. (EDP Sciences for European Southern Observatory (ESO), 2010)
    We present new observations of a transit of the 111.4-day-period exoplanet HD 80606b. Due to this long orbital period and to the orientation of the eccentric orbit (e = 0.9), HD 80606b's transits last for about 12 hours. ...
  • On the effects of clouds and hazes in the atmospheres of hot Jupiters: semi-analytical temperature-pressure profiles 

    Heng, Kevin; Hayek, W.; Pont, F.; Sing, David K. (Oxford University Press on behalf of the Royal Astronomical Society, 2011)
    Motivated by the work of Guillot, we present a semi-analytical formalism for calculating the temperature–pressure profiles in hot Jovian atmospheres which includes the effects of clouds/hazes and collision-induced absorption. ...
  • Planetary transit candidates in Corot-IRa01 field 

    Carpano, S.; Cabrera, J.; Alonso, R.; Barge, P.; Aigrain, Suzanne; Almenara, J.-M.; Bordé, P.; Bouchy, F.; Carone, L.; Deeg, H. J.; De la Reza, R.; Deleuil, M.; Dvorak, R.; Erikson, A.; Fressin, F.; Fridlund, M.; Gondoin, P.; Guillot, T.; Hatzes, A.; Jorda, L.; Lammer, H.; Léger, A.; Llebaria, A.; Magain, P.; Moutou, C.; Ofir, A.; Ollivier, M.; Janot-Pacheco, E.; Pätzold, M.; Pont, F.; Queloz, D.; Rauer, H.; Régulo, C.; Renner, S.; Rouan, D.; Samuel, B.; Schneider, J.; Wuchterl, G. (EDP Sciences, 2009)
    Context. CoRoT is a pioneering space mission devoted to the analysis of stellar variability and the photometric detection of extrasolar planets. Aims. We present the list of planetary transit candidates detected in the ...