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Fundamental properties of the pre-main sequence eclipsing stars of MML 53 and the mass of the tertiary (2019)
Journal Article
Hellier. (2019). Fundamental properties of the pre-main sequence eclipsing stars of MML 53 and the mass of the tertiary. Astronomy & Astrophysics, https://doi.org/10.1051/0004-6361/201733299

We present the most comprehensive analysis to date of the Upper Centaurus Lupus eclipsing binary MML 53 (with P-EB = 2.097892 d), and for the first time, confirm the bound-nature of the third star (in a P-3 similar to 9 yr orbit) by constraining its... Read More about Fundamental properties of the pre-main sequence eclipsing stars of MML 53 and the mass of the tertiary.

New transiting hot Jupiters discovered by WASP-South, Euler/CORALIE and TRAPPIST-South (2019)
Journal Article
Smalley, Hellier, & Maxted. (2019). New transiting hot Jupiters discovered by WASP-South, Euler/CORALIE and TRAPPIST-South. Monthly Notices of the Royal Astronomical Society, 1379-1391. https://doi.org/10.1093/mnras/sty2741

We report the discovery of eight hot-Jupiter exoplanets from the WASP-South transit survey. WASP-144b has a mass of 0.44 Mj, a radius of 0.85 Rj, and is in a 2.27-d orbit around a V = 12.9, K2 star which shows a 21-d rotational modulation. WASP-145Ab... Read More about New transiting hot Jupiters discovered by WASP-South, Euler/CORALIE and TRAPPIST-South.

Discovery of WASP-174b: Doppler tomography of a near-grazing transit (2018)
Journal Article
Maxted, Hellier, & Smalley. (2018). Discovery of WASP-174b: Doppler tomography of a near-grazing transit. Monthly Notices of the Royal Astronomical Society, 5307-5313. https://doi.org/10.1093/mnras/sty2197

We report the discovery and tomographic detection of WASP-174b, a planet with a near-grazing transit on a 4.23-d orbit around a V = 11.9, F6V star with [Fe/H] = 0.09 ± 0.09. The planet is in a moderately misaligned orbit with a sky-projected spin–orb... Read More about Discovery of WASP-174b: Doppler tomography of a near-grazing transit.

WASP-147b, 160Bb, 164b, and 165b: two hot Saturns and two Jupiters, including two planets with metal-rich hosts (2018)
Journal Article
Lendl, M., Anderson, D. R., Bonfanti, A., Bouchy, F., Burdanov, A., Collier Cameron, A., …West, R. G. (2019). WASP-147b, 160Bb, 164b, and 165b: two hot Saturns and two Jupiters, including two planets with metal-rich hosts. Monthly Notices of the Royal Astronomical Society, 482(1), 301 -312. https://doi.org/10.1093/mnras/sty2667

We report the discovery of four transiting hot Jupiters, WASP-147, WASP-160B, WASP-164, and WASP-165 from the WASP survey. WASP-147b is a near Saturn-mass (MP = 0.28MJ) object with a radius of 1.11RJ orbiting a G4 star with a period of 4.6 d. WASP-16... Read More about WASP-147b, 160Bb, 164b, and 165b: two hot Saturns and two Jupiters, including two planets with metal-rich hosts.

WASP-128b: a transiting brown dwarf in the dynamical-tide regime (2018)
Journal Article
Hodzic, V., Triaud, A. H. M. J., Anderson, D. R., Bouchy, F., Cameron, A. C., Delrez, L., …West, R. (2018). WASP-128b: a transiting brown dwarf in the dynamical-tide regime. Monthly Notices of the Royal Astronomical Society, 481(4), 5091-5097. https://doi.org/10.1093/mnras/sty2512

Massive companions in close orbits around G dwarfs are thought to undergo rapid orbital decay due to runaway tidal dissipation. We report here the discovery of WASP-128b, a brown dwarf discovered by the WASP survey transiting a G0V host on a 2.2 d or... Read More about WASP-128b: a transiting brown dwarf in the dynamical-tide regime.

WASP 0639-32: a new F-type subgiant/K-type main-sequence detached eclipsing binary from the WASP project (2018)
Journal Article
Hellier, & Maxted. (2018). WASP 0639-32: a new F-type subgiant/K-type main-sequence detached eclipsing binary from the WASP project. Astronomy & Astrophysics, A135 - A135. https://doi.org/10.1051/0004-6361/201731435

Aims. Our aim is to measure the masses and radii of the stars in a newly-discovered detached eclipsing binary system to a high precision (˜1%), enabling the system to be used for the calibration of free parameters in stellar evolutionary models. M... Read More about WASP 0639-32: a new F-type subgiant/K-type main-sequence detached eclipsing binary from the WASP project.

Thermal emission of WASP-48b in the K-s-band (2018)
Journal Article
Hellier. (2018). Thermal emission of WASP-48b in the K-s-band. Astronomy & Astrophysics, https://doi.org/10.1051/0004-6361/201527071

We report a detection of thermal emission from the hot Jupiter WASP-48b in the Ks-band. We used the Wide-field Infra-red Camera on the 3.6-m Canada-France Hawaii Telescope to observe an occultation of the planet by its host star. From the resulting o... Read More about Thermal emission of WASP-48b in the K-s-band.

WASP-104b is darker than charcoal (2018)
Journal Article
Močnik, T., Hellier, C., & Southworth, J. (2018). WASP-104b is darker than charcoal. Astronomical Journal, 156(2), Article 44. https://doi.org/10.3847/1538-3881/aacb26

By analyzing the K2 short-cadence data from Campaign 14, we detect phase-curve modulation in the light curve of the hot-Jupiter host star WASP-104. The ellipsoidal modulation is detected with high significance and in agreement with theoretical expect... Read More about WASP-104b is darker than charcoal.

An absolute sodium abundance for a cloud-free 'hot Saturn' exoplanet. (2018)
Journal Article
Hellier, & Smalley. (2018). An absolute sodium abundance for a cloud-free 'hot Saturn' exoplanet. Nature, 526 - 529. https://doi.org/10.1038/s41586-018-0101-7

Broad absorption signatures from alkali metals, such as the sodium (Na I) and potassium (K I) resonance doublets, have long been predicted in the optical atmospheric spectra of cloud-free irradiated gas giant exoplanets1-3. However, observations have... Read More about An absolute sodium abundance for a cloud-free 'hot Saturn' exoplanet..