All Outputs (145)

SuperWASP dispositions and false positive catalogue (2019)
Journal Article
Smalley, & Maxted. (2019). SuperWASP dispositions and false positive catalogue. Monthly Notices of the Royal Astronomical Society, 4905 - 4915. https://doi.org/10.1093/mnras/stz2064

SuperWASP, the Northern hemisphere WASP observatory, has been observing the skies from La Palma since 2004. In that time, more than 50 planets have been discovered with data contributions from SuperWASP. In the process of validating planets, many fal... Read More about SuperWASP dispositions and false positive catalogue.

WASP-180Ab: Doppler tomography of an hot Jupiter orbiting the primary star in a visual binary (2019)
Journal Article
Temple, L. Y., Hellier, C., Anderson, D. R., Barkaoui, K., Bouchy, F., Brown, D. J. A., …Zouhair, B. (2019). WASP-180Ab: Doppler tomography of an hot Jupiter orbiting the primary star in a visual binary. Monthly Notices of the Royal Astronomical Society, 490(2), 2467-2474. https://doi.org/10.1093/mnras/stz2632

We report the discovery and characterization of WASP-180Ab, a hot Jupiter confirmed by the detection of its Doppler shadow and by measuring its mass using radial velocities. We find the 0.9  ±  0.1 MJup, 1.24  ±  0.04 RJup planet to be in a misaligne... Read More about WASP-180Ab: Doppler tomography of an hot Jupiter orbiting the primary star in a visual binary.

WASP-166b: a bloated super-Neptune transiting a V = 9 star (2019)
Journal Article
Maxted, Hellier, & Smalley. (2019). WASP-166b: a bloated super-Neptune transiting a V = 9 star. Monthly Notices of the Royal Astronomical Society, 3067 -3075. https://doi.org/10.1093/mnras/stz1903

We report the discovery of WASP-166b, a super-Neptune planet with a mass of 0.1 MJup (1.9 MNep) and a bloated radius of 0.63 RJup. It transits a V = 9.36, F9V star in a 5.44-d orbit that is aligned with the stellar rotation axis (sky-projected obliqu... Read More about WASP-166b: a bloated super-Neptune transiting a V = 9 star.

Rotation and pulsation in Ap stars: first light results from TESS sectors 1 and 2 (2019)
Journal Article
Smalley. (2019). Rotation and pulsation in Ap stars: first light results from TESS sectors 1 and 2. Monthly Notices of the Royal Astronomical Society, 3523 -3549. https://doi.org/10.1093/mnras/stz1332

We present the first results from the Transiting Exoplanet Survey Satellite (TESS) on the rotational and pulsational variability of magnetic chemically peculiar A-type stars. We analyse TESS 2-min cadence data from sectors 1 and 2 on a sample of 83 s... Read More about Rotation and pulsation in Ap stars: first light results from TESS sectors 1 and 2.

The EBLM Project VI. The mass and radius of five low-mass stars in F+M binaries discovered by the WASP survey (2019)
Journal Article
Gill, S., Maxted, P., Evans, J., Evans, D., Smalley, B., Gary, B., …West, R. (2019). The EBLM Project VI. The mass and radius of five low-mass stars in F+M binaries discovered by the WASP survey. Astronomy & Astrophysics, 626, Article A119. https://doi.org/10.1051/0004-6361/201833054

Some M-dwarfs around F-/G-type stars have been measured to be hotter and larger than predicted by stellar evolution models. Inconsistencies between observations and models need addressing with more mass, radius and luminosity measurements of low-mass... Read More about The EBLM Project VI. The mass and radius of five low-mass stars in F+M binaries discovered by the WASP survey.

The EBLM Project V. Physical properties of ten fully convective, very-low-mass stars (2019)
Journal Article
Maxted, Smalley, & Hellier. (2019). The EBLM Project V. Physical properties of ten fully convective, very-low-mass stars. Astronomy & Astrophysics, https://doi.org/10.1051/0004-6361/201834539

Measurements of the physical properties of stars at the lower end of the main sequence are scarce. In this context we report masses, radii and surface gravities of ten very-low-mass stars in eclipsing binary systems, with orbital periods of the order... Read More about The EBLM Project V. Physical properties of ten fully convective, very-low-mass stars.

Three Hot-Jupiters on the upper edge of the mass-radius distribution: WASP-177, WASP-181 and WASP-183 (2019)
Journal Article
Maxted, Smalley, & Hellier. (2019). Three Hot-Jupiters on the upper edge of the mass-radius distribution: WASP-177, WASP-181 and WASP-183. Monthly Notices of the Royal Astronomical Society, 5790-5799. https://doi.org/10.1093/mnras/stz742

We present the discovery of 3 transiting planets from the WASP survey, two hot-Jupiters: WASP-177 b (~0.5 MJup, ~1.6 RJup) in a 3.07-d orbit of a V = 12.6 K2 star, WASP-183 b (~0.5 MJup, ~1.5 RJup) in a 4.11-d orbit of a V = 12.8 G9/K0 star; and one... Read More about Three Hot-Jupiters on the upper edge of the mass-radius distribution: WASP-177, WASP-181 and WASP-183.

A Hot Saturn Orbiting an Oscillating Late Subgiant Discovered by TESS (2019)
Journal Article
Smalley. (2019). A Hot Saturn Orbiting an Oscillating Late Subgiant Discovered by TESS. Astronomical Journal, https://doi.org/10.3847/1538-3881/ab1488

We present the discovery of HD 221416 b, the first transiting planet identified by the Transiting Exoplanet Survey Satellite (TESS) for which asteroseismology of the host star is possible. HD 221416 b (HIP 116158, TOI-197) is a bright (V = 8.2 mag),... Read More about A Hot Saturn Orbiting an Oscillating Late Subgiant Discovered by TESS.

NGTS-5b: a highly inflated planet offering insights into the sub-Jovian desert (2019)
Journal Article
Smalley, B., Eigmüller, P., Chaushev, A., Gillen, E., Smith, A., D. Nielsen, L., …J. Wheatley, P. (2019). NGTS-5b: a highly inflated planet offering insights into the sub-Jovian desert. Astronomy & Astrophysics, 625, Article A142. https://doi.org/10.1051/0004-6361/201935206

Context: Planetary population analysis gives us insight into formation and evolution processes. For short-period planets, the subJovian desert has been discussed in recent years with regard to the planet population in the mass/period and radius/perio... Read More about NGTS-5b: a highly inflated planet offering insights into the sub-Jovian desert.

WASP-190b: Tomographic discovery of a transiting hot Jupiter (2019)
Journal Article
Y. Temple, L., Hellier, C., Almleaky, Y., Anderson, D., Bouchy, F., Brown, D., …West, R. (2019). WASP-190b: Tomographic discovery of a transiting hot Jupiter. Astronomy & Astrophysics, 157(4), Article 141. https://doi.org/10.3847/1538-3881/ab095a

We report the discovery of WASP-190b, an exoplanet on a 5.37 day orbit around a mildly evolved F6 IV-V star with V = 11.7,  = 6400 ± 100 K, M* = 1.35 ± 0.05 M?, and R* = 1.6 ± 0.1 R?. The planet has a radius of RP = 1.15 ± 0.09 RJup and a mass of MP ... Read More about WASP-190b: Tomographic discovery of a transiting hot Jupiter.

Discovery of Three New Transiting Hot Jupiters: WASP-161 b, WASP-163 b, and WASP-170 b (2019)
Journal Article
Maxted, Smalley, & Hellier. (2019). Discovery of Three New Transiting Hot Jupiters: WASP-161 b, WASP-163 b, and WASP-170 b. Astronomical Journal, 43. https://doi.org/10.3847/1538-3881/aaf422

We present the discovery of three new transiting hot Jupiters by the WASP-South project, WASP-161 b, WASP-163 b, and WASP-170 b. Follow-up radial velocities obtained with the Euler/CORALIE spectrograph and transit light curves obtained with the TRAPP... Read More about Discovery of Three New Transiting Hot Jupiters: WASP-161 b, WASP-163 b, and WASP-170 b.

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.

NGTS-2b: An inflated hot-Jupiter transiting a bright F-dwarf (2018)
Journal Article
Raynard, L., Goad, M. R., Gillen, E., Nielsen, L. D., Watson, C. A., Thompson, A. P. G., …Wheatley, P. J. (2018). NGTS-2b: An inflated hot-Jupiter transiting a bright F-dwarf. Monthly Notices of the Royal Astronomical Society, 481(4), 4960-4970. https://doi.org/10.1093/mnras/sty2581

We report the discovery of NGTS-2b, an inflated hot-Jupiter transiting a bright F5V star (2MASS J14202949 - 3112074; Teff = 6478+94-89 K), discovered as part of the Next Generation Transit Survey (NGTS). The planet is in a P = 4.51?d orbit with mass... Read More about NGTS-2b: An inflated hot-Jupiter transiting a bright F-dwarf.

T Tauri stars in the SuperWASP and NSVS surveys (2018)
Journal Article
Hambalek, L., Vanko, M., Paunzen, E., & Smalley, B. (2019). T Tauri stars in the SuperWASP and NSVS surveys. Monthly Notices of the Royal Astronomical Society, 483(2), 1642 - 1654. https://doi.org/10.1093/mnras/sty3151

We present a study of the long-term optical variability of young T Tauri stars using previously unpublished data from the Super-Wide Angle Search for Planets (SuperWASP) project. Other publicly available photometry from the Northern Sky Variability S... Read More about T Tauri stars in the SuperWASP and NSVS surveys.

Machine-learning Approaches to Exoplanet Transit Detection and Candidate Validation in Wide-field Ground-based Surveys (2018)
Journal Article
Schanche, N., Collier Cameron, A., Hébrard, G., Nielsen, L., Triaud, A. H. M. J., Almenara, J. M., …Wheatley, P. J. Machine-learning Approaches to Exoplanet Transit Detection and Candidate Validation in Wide-field Ground-based Surveys. https://doi.org/10.1093/mnras/sty3146. Manuscript submitted for publication

Since the start of the Wide Angle Search for Planets (WASP) program, more than 160 transiting exoplanets have been discovered in the WASP data. In the past, possible transit-like events identified by the WASP pipeline have been vetted by human inspec... Read More about Machine-learning Approaches to Exoplanet Transit Detection and Candidate Validation in Wide-field Ground-based Surveys.

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.

Unmasking the hidden NGTS-3Ab: a hot Jupiter in an unresolved binary system (2018)
Journal Article
Smalley. (2018). Unmasking the hidden NGTS-3Ab: a hot Jupiter in an unresolved binary system. Monthly Notices of the Royal Astronomical Society, 4720-4737. https://doi.org/10.1093/mnras/sty1193

We present the discovery of NGTS-3Ab, a hot Jupiter found transiting the primary star of an unresolved binary system. We develop a joint analysis of multi-colour photometry, centroids, radial velocity (RV) cross-correlation function (CCF) profiles an... Read More about Unmasking the hidden NGTS-3Ab: a hot Jupiter in an unresolved binary system.

The atmospheric parameters of FGK stars using wavelet analysis of CORALIE spectra (2018)
Journal Article
Smalley, & Maxted. (2018). The atmospheric parameters of FGK stars using wavelet analysis of CORALIE spectra. Astronomy & Astrophysics, https://doi.org/10.1051/0004-6361/201731954

Context. Atmospheric properties of F-, G- and K-type stars can be measured by spectral model fitting or with the analysis of equivalent width (EW) measurements. These methods require data with good signal-to-noise ratios (S/Ns) and reliable continuum... Read More about The atmospheric parameters of FGK stars using wavelet analysis of CORALIE spectra.