WASP-52b, WASP-58b, WASP-59b, and WASP-60b: Four new transiting close-in giant planets

Hébrard, G.; Cameron, A. Collier; Brown, D. J. A.; Díaz, R. F.; Faedi, F.; Smalley, B.; Anderson, D. R.; Armstrong, David J.; Barros, S. C. C.; Bento, J.; Bouchy, F.; Doyle, A. P.; Enoch, B.; Chew, Y. Gómez Maqueo; Hébrard, Eric; Hellier, C.; Lendl, M.; Lister, Tim; Maxted, P. F. L.; McCormac, J.; Moutou, C.; Pollacco, D.; Queloz, D.; Santerne, A.; Skillen, I.; Southworth, J.; Tregloan-Reed, J.; Triaud, A. H. M. J.; Udry, S.; Vanhuysse, M.; Watson, C. A.; West, R. G.; Wheatley, P. J.

doi:10.1051/0004-6361/201220363

Cited by 122 publications

(168 citation statements)

References 42 publications

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“…Additional measurements were taken far from the transit in 2011 (2 in February and June 2011; Santerne et al 2012a) and in 2014 (2 in May and June 2014) to put constraints on the mass of KOI-12.01. The 2014 observations are of better quality than the 2011 ones, which may be affected by a systematic shift reminiscent of previous SOPHIE observations in high-efficiency (HE) mode (Hébrard et al 2013). Contrary to the 2014 dataset, no radial velocity standard stars were monitored during the 2011 observations, and we could not find any adequate correction for this possible shift.…”

Section: Spectroscopic Data With Sophiementioning

confidence: 86%

SOPHIE velocimetry ofKeplertransit candidates

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Étangs

Hébrard

et al. 2015

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We present the detection and characterization of the transiting warm Jupiter KOI-12b, first identified with Kepler with an orbital period of 17.86 days. We combine the analysis of Kepler photometry with Doppler spectroscopy and line-profile tomography of timeseries spectra obtained with the SOPHIE spectrograph to establish its planetary nature and derive its properties. To derive reliable estimates for the uncertainties on the tomographic model parameters, we devised an empirical method of calculating statistically independent error bars on the time-series spectra. KOI-12b has a radius of 1.43 ± 0.13 R Jup and a 3σ upper mass limit of 10 M Jup . It orbits a fast-rotating star (v sin i = 60.0 ± 0.9 km s −1 ) with mass and radius of 1.45 ± 0.09 M and 1.63 ± 0.15 R , located at 426 ± 40 pc from the Earth. Doppler tomography allowed higher precision on the obliquity to be reached by comparison with analysis of the Rossiter-McLaughlin radial velocity anomaly, and we find that KOI-12b lies on a prograde, slightly misaligned orbit with low sky-projected obliquity λ = 12.6 +3.0 −2.9• . The properties of this planetary system, with a 11.4 mag host star, make of KOI-12b a precious target for future atmospheric characterization.

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Section: Spectroscopic Data With Sophiementioning

confidence: 86%

SOPHIE velocimetry ofKeplertransit candidates

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Étangs

Hébrard

et al. 2015

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“…The WASP camera arrays are described in Pollacco et al (2006), while our planet-hunting methods are described in Collier Cameron et al (2007b) and Pollacco et al (2008) Equatorial WASP candidates are followed up by obtaining radial velocities using the SOPHIE spectrograph on the 1.93-m telescope at Observatoire de Haute-Provence (as described in, e.g. Hébrard et al 2013) and the CORALIE spectrograph on the 1.2-m Euler telescope at La Silla (e.g. Triaud et al 2013).…”

Section: Observationsmentioning

confidence: 99%

Three irradiated and bloated hot Jupiters:

West¹,

Hellier²,

Almenara³

et al. 2016

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We report on three new transiting hot Jupiter planets, discovered from the WASP surveys, which we combine with radial velocities from OHP/SOPHIE and Euler/CORALIE and photometry from Euler and TRAPPIST. The planets WASP-76b, WASP-82b, and WASP-90b are all inflated, with radii of 1.7-1.8 R Jup . All three orbit hot stars, of type F5-F7, with orbits of 1.8-3.9 d, and all three stars have evolved, post-main-sequence radii (1.7-2.2 R ). Thus the three planets fit a known trend of hot Jupiters that receive high levels of irradiation being highly inflated. We caution, though, about the presence of a selection effect, in that non-inflated planets around ∼2 R post-MS stars can often produce transits too shallow to be detected by the ground-based surveys that have found the majority of transiting hot Jupiters.

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“…Today, nearly 300 transiting exoplanets have been discovered. They were mainly detected by ground-based photometric surveys which are mostly sensitive to close-in giant planets (see, e.g., Hébrard et al 2013), and from their space-based counterparts CoRoT and Kepler which are sensitive to similar planets, as well as to planets on longer periods and/or smaller radii. The Kepler satellite, in particular, is monitoring stars with high-precision optical photometry with the goal of detecting signatures of exoplanetary transits.…”

Section: Introductionmentioning

confidence: 99%

KOI-200 b and KOI-889 b: Two transiting exoplanets detected and characterized withKepler, SOPHIE, and HARPS-N

Hébrard¹,

Almenara²,

Santerne³

et al. 2013

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We present the detection and characterization of the two new transiting, close-in, giant extrasolar planets KOI-200 b and KOI-889 b. They were first identified by the Kepler team as promising candidates from photometry of the Kepler satellite; we then established their planetary nature thanks to the radial velocity follow-up jointly secured with the spectrographs SOPHIE and HARPS-N. Combined analyses of the whole datasets allow the two planetary systems to be characterized. The planet KOI-200 b has mass and radius of 0.68 ± 0.09 M Jup and 1.32 ± 0.14 R Jup ; it orbits in 7.34 days a F8V host star with mass and radius of 1.40 +0.14 −0.11 M and 1.51 ± 0.14 R . The planet KOI-889 b is a massive planet with mass and radius of 9.9 ± 0.5 M Jup and 1.03 ± 0.06 R Jup ; it orbits in 8.88 days an active G8V star with a rotation period of 19.2 ± 0.3 days, and mass and radius of 0.88 ± 0.06 M and 0.88 ± 0.04 R . Both planets lie on eccentric orbits and are located just at the frontier between regimes where tides can explain circularization and where tidal effects are negligible. The two planets are among the first detected and characterized thanks to observations secured with HARPS-N, the new spectrograph recently mounted at the Telescopio Nazionale Galileo. These results illustrate the benefits that could be obtained from joint studies using two spectrographs as SOPHIE and HARPS-N.

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WASP-52b, WASP-58b, WASP-59b, and WASP-60b: Four new transiting close-in giant planets

Cited by 122 publications

References 42 publications

SOPHIE velocimetry ofKeplertransit candidates

SOPHIE velocimetry ofKeplertransit candidates

Three irradiated and bloated hot Jupiters:

KOI-200 b and KOI-889 b: Two transiting exoplanets detected and characterized withKepler, SOPHIE, and HARPS-N

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