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

CSI 2264: Simultaneous optical and infrared light curves of young disk-bearing stars in NGC 2264 with CoRoT and Spitzer-- evidence for multiple origins of variability

(2014)

Authors:

Ann Marie Cody, John Stauffer, Annie Baglin, Giuseppina Micela, Luisa M Rebull, Ettore Flaccomio, María Morales-Calderón, Suzanne Aigrain, Jèrôme Bouvier, Lynne A Hillenbrand, Robert Gutermuth, Inseok Song, Neal Turner, Silvia HP Alencar, Konstanze Zwintz, Peter Plavchan, John Carpenter, Krzysztof Findeisen, Sean Carey, Susan Terebey, Lee Hartmann, Nuria Calvet, Paula Teixeira, Frederick J Vrba, Scott Wolk, Kevin Covey, Katja Poppenhaeger, Hans Moritz Günther, Jan Forbrich, Barbara Whitney, Laura Affer, William Herbst, Joseph Hora, David Barrado, Jon Holtzman, Franck Marchis, Kenneth Wood, Marcelo Medeiros Guimarães, Jorge Lillo Box, Ed Gillen, Amy McQuillan, Catherine Espaillat, Lori Allen, Paola D'Alessio, Fabio Favata

Transiting exoplanets from the CoRoT space mission XXV. CoRoT-27b: a massive and dense planet on a short-period orbit

(2014)

Authors:

H Parviainen, D Gandolfi, M Deleuil, C Moutou, HJ Deeg, S Ferraz-Mello, B Samuel, Sz Csizmadia, T Pasternacki, G Wuchterl, M Havel, M Fridlund, R Angus, B Tingley, S Grziwa, J Korth, S Aigrain, JM Almenara, R Alonso, A Baglin, SCC Barros, ASP Bordé, F Bouchy, J Cabrera, RF Díaz, R Dvorak, A Erikson, T Guillot, A Hatzes, G Hébrard, T Mazeh, G Montagnier, A Ofir, M Ollivier, M Pätzold, H Rauer, D Rouan, A Santerne, J Schneider

The Monitor Project: Stellar rotation at 13 Myr: I. A photometric monitoring survey of the young open cluster h Persei

Astronomy and Astrophysics 560 (2013)

Authors:

E Moraux, S Artemenko, J Bouvier, J Irwin, M Ibrahimov, T Magakian, K Grankin, E Nikogossian, C Cardoso, S Hodgkin, S Aigrain, TA Movsessian

Abstract:

Aims. We aim at constraining the angular momentum evolution of low-mass stars by measuring their rotation rates when they begin to evolve freely towards the zero-age main sequence (ZAMS), i.e., after the disk accretion phase has stopped. Methods. We conducted a multisite photometric monitoring of the young open cluster h Persei, which has an age of ∼13 Myr. The observations were done in the I-band using four different telescopes, and the variability study is sensitive to periods from less than 0.2 day to 20 days. Results. Rotation periods are derived for 586 candidate cluster members over the mass range 0:4 ≤ M=M⊙ ≤ 1:4. The rotation period distribution indicates a slightly higher fraction of fast rotators for the lower mass objects, although the lower and upper envelopes of the rotation period distribution, located respectively at ∼0.20.3 d and ∼10 d, are remarkably flat over the whole mass range. We combine this period distribution with previous results obtained in younger and older clusters to model the angular momentum evolution of low mass stars during the pre-main sequence (PMS) phase. Conclusions. The h Per cluster provides the first statistically robust estimate of the rotational period distribution of solar-type and lower mass stars at the end of the PMS accretion phase (≥10 Myr). The results are consistent with models that assume significant core-envelope decoupling during the angular momentum evolution to the ZAMS. © 2013 ESO.

CoRoT 223992193: A new, low-mass, pre-main sequence eclipsing binary with evidence of a circumbinary disk

(2013)

Authors:

Edward Gillen, Suzanne Aigrain, Amy McQuillan, Jerome Bouvier, Simon Hodgkin, Silvia HP Alencar, Caroline Terquem, John Southworth, Neale P Gibson, Ann Marie Cody, Monika Lendl, Maria Morales-Calderón, Fabio Favata, John Stauffer, Giuseppina Micela

Radial Velocity Variations of Photometrically Quiet, Chromospherically Inactive Kepler Stars: A Link Between RV Jitter and Photometric Flicker

(2013)

Authors:

Fabienne A Bastien, Keivan G Stassun, Joshua Pepper, Jason T Wright, Suzanne Aigrain, Gibor Basri, John A Johnson, Andrew W Howard, Lucianne M Walkowicz

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