Exoplanets and Stellar Physics

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The secondary eclipse of the transiting exoplanet CoRoT-2b

Astronomy and Astrophysics 501:3 (2009)

Authors:

R Alonso, T Guillot, T Mazeh, S Aigrain, A Alapini, P Barge, A Hatzes, F Pont

Abstract:

We present a study of the light curve of the transiting exoplanet CoRoT-2b, aimed at detecting the secondary eclipse and measuring its depth. The data were obtained with the CoRoT satellite during its first run of more than 140 days. After filtering the low frequencies with a pre-whitening technique, we detect a 0.0060±0.0020% secondary eclipse centered on the orbital phase 0.494±0.006. Assuming a black-body emission of the planet, we estimate a surface brightness temperature of Tp,CoRoT = 1910+90-100 K. We provide the planet's equilibrium temperature and re-distribution factors as a function of the unknown amount of reflected light. The upper limit for the geometric albedo is 0.12. The detected secondary is the shallowest ever found. © 2009 ESO.
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Sensitivity of stable water isotopic values to convective parameterization schemes

Geophysical Research Letters American Geophysical Union (AGU) 36:23 (2009)

Authors:

Jung‐Eun Lee, Raymond Pierrehumbert, Abigail Swann, Benjamin R Lintner
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Transit timing analysis of CoRoT-1b

(2009)

Authors:

Sz Csizmadia, S Renner, P Barge, E Agol, S Aigrain, R Alonso, JM Almenara, AS Bonomo, P Borde, F Bouchy, J Cabrera, HJ Deeg, R De la Reza, M Deleuil, R Dvorak, A Erikson, EW Guenther, M Fridlund, P Gondoin, T Guillot, A Hatzes, L Jorda, H Lammer, C Lázaro, A Leger, A Llebaria, P Magain, C Moutou, M Ollivier, M Paetzold, D Queloz, H Rauer, D Rouan, J Schneider, G Wuchterl, D Gandolfi
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Global warming, convective threshold and false thermostats

Geophysical Research Letters American Geophysical Union (AGU) 36:21 (2009)

Authors:

Ian N Williams, Raymond T Pierrehumbert, Matthew Huber
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Pixel multiplexing for high-speed multi-resolution fluorescence imaging

ArXiv 0910.0789 (2009)

Authors:

Gil Bub, Matthias Tecza, Michiel Helmes, Peter Lee, Peter Kohl

Abstract:

We introduce a imaging modality that works by transiently masking image-subregions during a single exposure of a CCD frame. By offsetting subregion exposure time, temporal information is embedded within each stored frame, allowing simultaneous acquisition of a full high spatial resolution image and a high-speed image sequence without increasing bandwidth. The technique is demonstrated by imaging calcium transients in heart cells at 250 Hz with a 10 Hz megapixel camera.
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