Publications by Suzanne Aigrain


HST HOT-JUPITER TRANSMISSION SPECTRAL SURVEY: CLEAR SKIES FOR COOL SATURN WASP-39b

ASTROPHYSICAL JOURNAL 827 (2016) ARTN 19

PD Fischer, HA Knutson, DK Sing, GW Henry, MW Williamson, JJ Fortney, AS Burrows, T Kataria, N Nikolov, AP Showman, GE Ballester, J-M Desert, S Aigrain, D Deming, AL des Etangs, A Vidal-Madjar


ROTATION IN THE PLEIADES WITH K2. I. DATA AND FIRST RESULTS

ASTRONOMICAL JOURNAL 152 (2016) ARTN 113

LM Rebull, JR Stauffer, J Bouvier, AM Cody, LA Hillenbrand, DR Soderblom, J Valenti, D Barrado, H Bouy, D Ciardi, M Pinsonneault, K Stassun, G Micela, S Aigrain, F Vrba, G Somers, J Christiansen, E Gillen, AC Cameron


ROTATION IN THE PLEIADES WITH K2. II. MULTIPERIOD STARS

ASTRONOMICAL JOURNAL 152 (2016) ARTN 114

LM Rebull, JR Stauffer, J Bouvier, AM Cody, LA Hillenbrand, DR Soderblom, J Valenti, D Barrado, H Bouy, D Ciardi, M Pinsonneault, K Stassun, G Micela, S Aigrain, F Vrba, G Somers, E Gillen, AC Cameron


ROTATION IN THE PLEIADES WITH K2. III. SPECULATIONS ON ORIGINS AND EVOLUTION

ASTRONOMICAL JOURNAL 152 (2016) ARTN 115

J Stauffer, L Rebull, J Bouvier, LA Hillenbrand, A Collier-Cameron, M Pinsonneault, S Aigrain, D Barrado, H Bouy, D Ciardi, AM Cody, T David, G Micela, D Soderblom, G Somers, KG Stassun, J Valenti, FJ Vrba


A continuum from clear to cloudy hot-Jupiter exoplanets without primordial water depletion.

Nature 529 (2016) 59-62

DK Sing, JJ Fortney, N Nikolov, HR Wakeford, T Kataria, TM Evans, S Aigrain, GE Ballester, AS Burrows, D Deming, JM Désert, NP Gibson, GW Henry, CM Huitson, HA Knutson, AL des Etangs, F Pont, AP Showman, A Vidal-Madjar, MH Williamson, PA Wilson

Thousands of transiting exoplanets have been discovered, but spectral analysis of their atmospheres has so far been dominated by a small number of exoplanets and data spanning relatively narrow wavelength ranges (such as 1.1-1.7 micrometres). Recent studies show that some hot-Jupiter exoplanets have much weaker water absorption features in their near-infrared spectra than predicted. The low amplitude of water signatures could be explained by very low water abundances, which may be a sign that water was depleted in the protoplanetary disk at the planet's formation location, but it is unclear whether this level of depletion can actually occur. Alternatively, these weak signals could be the result of obscuration by clouds or hazes, as found in some optical spectra. Here we report results from a comparative study of ten hot Jupiters covering the wavelength range 0.3-5 micrometres, which allows us to resolve both the optical scattering and infrared molecular absorption spectroscopically. Our results reveal a diverse group of hot Jupiters that exhibit a continuum from clear to cloudy atmospheres. We find that the difference between the planetary radius measured at optical and infrared wavelengths is an effective metric for distinguishing different atmosphere types. The difference correlates with the spectral strength of water, so that strong water absorption lines are seen in clear-atmosphere planets and the weakest features are associated with clouds and hazes. This result strongly suggests that primordial water depletion during formation is unlikely and that clouds and hazes are the cause of weaker spectral signatures.


Telling twins apart: exo-Earths and Venuses with transit spectroscopy

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 458 (2016) 2657-2666

JK Barstow, S Aigrain, PGJ Irwin, S Kendrew, LN Fletcher


Ghost in the time series: no planet for Alpha Cen B

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 456 (2016) L6-L10

V Rajpaul, S Aigrain, S Roberts


The GTC exoplanet transit spectroscopy survey II. An overly large Rayleigh-like feature for exoplanet TrES-3b

ASTRONOMY & ASTROPHYSICS 585 (2016) ARTN A114

H Parviainen, E Palle, L Nortmann, G Nowak, N Iro, F Murgas, S Aigrain


Transiting exoplanet candidates from K2 Campaigns 5 and 6

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 461 (2016) 3399-3409

BJS Pope, H Parviainen, S Aigrain


NEW PLEIADES ECLIPSING BINARIES AND A HYADES TRANSITING SYSTEM IDENTIFIED BY K2

ASTRONOMICAL JOURNAL 151 (2016) ARTN 112

TJ David, KE Conroy, LA Hillenbrand, KG Stassun, J Stauffer, LM Rebull, AM Cody, H Isaacson, AW Howard, S Aigrain


Photometry of very bright stars with Kepler and K2 smear data

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 455 (2016) L36-L40

BJS Pope, TR White, D Huber, SJ Murphy, TR Bedding, DA Caldwell, A Sarai, S Aigrain, T Barclay


K2SC: flexible systematics correction and detrending of K2 light curves using Gaussian process regression

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 459 (2016) 2408-2419

S Aigrain, H Parviainen, BJS Pope


The doubly eclipsing quintuple low-mass star system 1SWASP J093010.78+533859.5

ASTRONOMY & ASTROPHYSICS 578 (2015) ARTN A103

ME Lohr, AJ Norton, E Gillen, R Busuttil, UC Kolb, S Aigrain, A McQuillan, ST Hodgkin, E Gonzalez


A Gaussian process framework for modelling stellar activity signals in radial velocity data

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 452 (2015) 2269-2291

V Rajpaul, S Aigrain, MA Osborne, S Reece, S Roberts


Transiting exoplanets from the CoRoT space mission XXVIII. CoRoT-33b, an object in the brown dwarf desert with 2:3 commensurability with its host star

ASTRONOMY & ASTROPHYSICS 584 (2015) ARTN A13

S Csizmadia, A Hatzes, D Gandolfi, M Deleuil, F Bouchy, M Fridlund, L Szabados, H Parviainen, J Cabrera, S Aigrain, R Alonso, J-M Almenara, A Baglin, P Borde, AS Bonomo, HJ Deeg, RF Diaz, A Erikson, S Ferraz-Mello, M Tadeu dos Santos, EW Guenther, T Guillot, S Grziwa, G Hebrard, P Klagyivik, M Ollivier, M Paetzold, H Rauer, D Rouan, A Santerne, J Schneider, T Mazeh, G Wuchterl, S Carpano, A Ofir


Exoplanet transmission spectroscopy using KMOS

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 453 (2015) 3875-3885

H Parviainen, S Aigrain, N Thatte, JK Barstow, TM Evans, N Gibson


LDTK: Limb Darkening Toolkit

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 453 (2015) 3821-3826

H Parviainen, S Aigrain


HST hot-Jupiter transmission spectral survey: detection of potassium in WASP-31b along with a cloud deck and Rayleigh scattering

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 446 (2015) 2428-2443

DK Sing, HR Wakeford, AP Showman, N Nikolov, JJ Fortney, AS Burrows, GE Ballester, D Deming, S Aigrain, J-M Desert, NP Gibson, GW Henry, H Knutson, AL des Etangs, F Pont, A Vidal-Madjar, MW Williamson, PA Wilson


Transit spectroscopy with JWST: systematics, star-spots and stitching (vol 448, pg 2546, 2015)

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 451 (2015) 1306-1306

JK Barstow, S Aigrain, PGJ Irwin, S Kendrew, LN Fletcher


HST hot-Jupiter transmission spectral survey: haze in the atmosphere of WASP-6b

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 447 (2015) 463-478

N Nikolov, DK Sing, AS Burrows, JJ Fortney, GW Henry, F Pont, GE Ballester, S Aigrain, PA Wilson, CM Huitson, NP Gibson, J-M Desert, AL des Etangs, AP Showman, A Vidal-Madjar, HR Wakeford, K Zahnle

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