Prof Suzanne Aigrain: Publications

Stellar_flare_hits_HD_189733_b_(artist's_impression)

This artist's impression shows the hot Jupiter HD 189733b, as it passes in front of its parent star, as the latter is flaring, driving material away from the planet. The escaping atmosphere is seen silhouetted against the starlight. The surface of the star, which is around 80% the mass of the Sun, is based on observations of the Sun from NASA's Solar Dynamics Observatory.

Credit: NASA, ESA, L. Calçada, Solar Dynamics Observatory

The secondary eclipse of CoRoT-1b

(2009)

Authors:

R Alonso, A Alapini, S Aigrain, M Auvergne, A Baglin, M Barbieri, P Barge, AS Bonomo, P Borde, F Bouchy, S Chaintreuil, R De la Reza, HJ Deeg, M Deleuil, R Dvorak, A Erikson, M Fridlund, F Fialho, P Gondoin, T Guillot, A Hatzes, L Jorda, H Lammer, A Leger, A Llebaria, P Magain, T Mazeh, C Moutou, M Ollivier, M Patzold, F Pont, D Queloz, H Rauer, D Rouan, J Schneider, G Wuchterl

Spin-orbit misalignment in the HD80606 planetary system

(2009)

Authors:

F Pont, G Hebrard, JM Irwin, F Bouchy, C Moutou, D Ehrenreich, T Guillot, S Aigrain

The secondary eclipse of the transiting exoplanet CoRoT-2b

(2009)

Authors:

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

An iterative filter to reconstruct planetary transit signals in the presence of stellar variability

(2009)

Authors:

A Alapini, S Aigrain

Star-planet interactions

Aip Conference Proceedings 1094 (2009) 275-282

Authors:

E Shkolnik, S Aigrain, S Cranmer, R Fares, M Fridlund, F Pont, J Schmitt, A Smith, T Suzuki

Abstract:

Much effort has been invested in recent years, both observationally and theoretically, to understand the interacting processes taking place in planetary systems consisting of a hot Jupiter orbiting its star within 10 stellar radii. Several independent studies have converged on the same scenario: that a short-period planet can induce activity on the photosphere and upper atmosphere of its host star. The growing body of evidence for such magnetic star-planet interactions includes a diverse array of photometric, spectroscopic and spectropolarimetric studies. The nature of which is modeled to be strongly affected by both the stellar and planetary magnetic fields, possibly influencing the magnetic activity of both bodies, as well as affecting irradiation and non-thermal and dynamical processes. Tidal interactions are responsible for the circularization of the planet orbit, for the synchronization of the planet rotation with the orbital period, and may also synchronize the outer convective envelope of the star with the planet. 51��ing such star-planet interactions (SPI) aids our understanding of the formation, migration and evolution of hot Jupiters. In this proceeding, we briefly summarise the observations and theories presented during the Cool Stars 15 splinter session¹ of this diverse and growing field of star-planet interactions. © 2009 American Institute of Physics.

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