Barry Smalley's Outputs (153)

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.

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..

Suppressed phase variations in a high amplitude rapidly oscillating Ap star pulsating in a distorted quadrupole mode (2018)
Journal Article
Holdsworth, D., Saio, H., Bowman, D., Kurtz, D., Lambert, T., Smalley, B., …Sefako, R. (2018). Suppressed phase variations in a high amplitude rapidly oscillating Ap star pulsating in a distorted quadrupole mode. Monthly Notices of the Royal Astronomical Society, 601-616. https://doi.org/10.1093/mnras/sty248

We present the results of a multisite photometric observing campaign on the rapidly oscillating Ap (roAp) star 2MASS 16400299-0737293 (J1640; $V=12.7$). We analyse photometric $B$ data to show the star pulsates at a frequency of $151.93$ d$^{-1}$ ($1... Read More about Suppressed phase variations in a high amplitude rapidly oscillating Ap star pulsating in a distorted quadrupole mode.

The discovery of WASP-151b, WASP-153b, WASP-156b: Insights on giant planet migration and the upper boundary of the Neptunian desert (2018)
Journal Article
Smalley, Hellier, & Maxted. (2018). The discovery of WASP-151b, WASP-153b, WASP-156b: Insights on giant planet migration and the upper boundary of the Neptunian desert. Astronomy & Astrophysics, https://doi.org/10.1051/0004-6361/201731735

To investigate the origin of the features discovered in the exoplanet population, the knowledge of exoplanets mass and radius with a good precision (less than or similar to 10%) is essential. To achieve this purpose the discovery of transiting exopla... Read More about The discovery of WASP-151b, WASP-153b, WASP-156b: Insights on giant planet migration and the upper boundary of the Neptunian desert.

High-resolution Imaging of Transiting Extrasolar Planetary systems (HITEP). II. Lucky Imaging results from 2015 and 2016 (2018)
Journal Article
Evans, D., Southworth, J., Smalley, B., Jørgensen, U., Dominik, M., Andersen, M., …Wertz, O. (2018). High-resolution Imaging of Transiting Extrasolar Planetary systems (HITEP). II. Lucky Imaging results from 2015 and 2016. Astronomy and Astrophysics, 610, Article A20. https://doi.org/10.1051/0004-6361/201731855

Context.
The formation and dynamical history of hot Jupiters is currently debated, with wide stellar binaries having been suggested as a potential formation pathway. Additionally, contaminating light from both binary companions and unassociated star... Read More about High-resolution Imaging of Transiting Extrasolar Planetary systems (HITEP). II. Lucky Imaging results from 2015 and 2016.

On the non-variability of HR 7653 (15 Vul) based on BRITE data (2018)
Journal Article
Smalley. (2018). On the non-variability of HR 7653 (15 Vul) based on BRITE data

We present space-based BRITE photometric observations of the metallic line (CP1) star HR 7653 (15 Vul). This chemically peculiar star of the upper main sequence was suspected to show variability due to rotation and a magnetic field. Such a variabilit... Read More about On the non-variability of HR 7653 (15 Vul) based on BRITE data.

High-precision multi-wavelength eclipse photometry of the ultra-hot gas giant exoplanet WASP-103 b (2017)
Journal Article
Smalley, Hellier, & Maxted. (2017). High-precision multi-wavelength eclipse photometry of the ultra-hot gas giant exoplanet WASP-103 b. Monthly Notices of the Royal Astronomical Society, 2334-2351. https://doi.org/10.1093/mnras/stx2896

We present sixteen occultation and three transit light curves for the ultra-short period hot Jupiter WASP-103b, in addition to five new radial velocity measurements. We combine these observations with archival data and perform a global analysis of th... Read More about High-precision multi-wavelength eclipse photometry of the ultra-hot gas giant exoplanet WASP-103 b.

The SuperWASP catalogue of 4963 RR Lyr stars: identification of 983 Blazhko effect candidates (2017)
Journal Article
Greer, P., Payne, S., Norton, A., Maxted, P., Smalley, B., West, R., …Kolb, U. (2017). The SuperWASP catalogue of 4963 RR Lyr stars: identification of 983 Blazhko effect candidates. Astronomy & Astrophysics, A11. https://doi.org/10.1051/0004-6361/201630296

Aims. We set out to compile a catalogue of RRab pulsating variables in the SuperWASP archive and identify candidate Blazhko effect objects within this catalogue. We analysed their light curves and power spectra for correlations in their common charac... Read More about The SuperWASP catalogue of 4963 RR Lyr stars: identification of 983 Blazhko effect candidates.

Spectroscopic survey of Kepler stars - II. FIES/NOT observations of A- and F-type stars (2017)
Journal Article
Smalley. (2017). Spectroscopic survey of Kepler stars - II. FIES/NOT observations of A- and F-type stars. Monthly Notices of the Royal Astronomical Society, 2870 -2889. https://doi.org/10.1093/mnras/stx1256

We have analysed high-resolution spectra of 28 A and 22 F stars in the Kepler field, observed using the Fibre-Fed Échelle Spectrograph at the Nordic Optical Telescope. We provide spectral types, atmospheric parameters and chemical abundances for 50 s... Read More about Spectroscopic survey of Kepler stars - II. FIES/NOT observations of A- and F-type stars.

Whole Earth Telescope discovery of a strongly distorted quadrupole pulsation in the largest amplitude rapidly oscillating Ap star (2017)
Journal Article
L. Holdsworth, D., W. Kurtz, D., Saio, H., L. Provencal, J., Letarte, B., Sefako, R., …L. Fletcher, C. (2018). Whole Earth Telescope discovery of a strongly distorted quadrupole pulsation in the largest amplitude rapidly oscillating Ap star. Monthly Notices of the Royal Astronomical Society, 473(1), 91-104. https://doi.org/10.1093/mnras/stx2401

We present a new analysis of the rapidly oscillating Ap (roAp) star, 2MASS J19400781 - 4420093 (J1940; V = 13.1). The star was discovered using SuperWASP broadband photometry to have a frequency of 176.39 d-1 (2041.55 µHz; P = 8.2 min; (Holdsworth et... Read More about Whole Earth Telescope discovery of a strongly distorted quadrupole pulsation in the largest amplitude rapidly oscillating Ap star.

Eclipsing binary stars with a delta Scuti component (2017)
Journal Article
Smalley. (2017). Eclipsing binary stars with a delta Scuti component. Monthly Notices of the Royal Astronomical Society, 915 -931. https://doi.org/10.1093/mnras/stx1241

Eclipsing binaries with a d Sct component are powerful tools to derive the fundamental parameters and probe the internal structure of stars. In this study, spectral analysis of six primary d Sct components in eclipsing binaries has been performed. Va... Read More about Eclipsing binary stars with a delta Scuti component.

The EBLM Project: IV. Spectroscopic orbits of over 100 eclipsing M dwarfs masquerading as transiting hot Jupiters (2017)
Journal Article
Smalley, Hellier, & Maxted. (2017). The EBLM Project: IV. Spectroscopic orbits of over 100 eclipsing M dwarfs masquerading as transiting hot Jupiters. Astronomy and Astrophysics, https://doi.org/10.1051/0004-6361/201730993

We present 2271 radial velocity measurements taken on 118 single-line binary stars, taken over eight years with the CORALIE spectrograph. The binaries consist of F/G/K primaries and M dwarf secondaries. They were initially discovered photometrically... Read More about The EBLM Project: IV. Spectroscopic orbits of over 100 eclipsing M dwarfs masquerading as transiting hot Jupiters.

The Homogeneous Study of Transiting Systems (HoSTS) – II. The influence of the line list on stellar parameters (2017)
Journal Article
Smalley. (2017). The Homogeneous Study of Transiting Systems (HoSTS) – II. The influence of the line list on stellar parameters. Monthly Notices of the Royal Astronomical Society, 4850 -4862. https://doi.org/10.1093/mnras/stx1180

The use of high-resolution, high signal-to-noise stellar spectra is essential in order to determine the most accurate and precise stellar atmospheric parameters via spectroscopy. This is particularly important for determining the fundamental paramete... Read More about The Homogeneous Study of Transiting Systems (HoSTS) – II. The influence of the line list on stellar parameters.

The EBLM project - III. A Saturn-size low-mass star at the hydrogen-burning limit (2017)
Journal Article
Hellier, Smalley, & Maxted. (2017). The EBLM project - III. A Saturn-size low-mass star at the hydrogen-burning limit. Astronomy & Astrophysics, L6 -L6. https://doi.org/10.1051/0004-6361/201731107

We report the discovery of an eclipsing binary system with mass-ratio q ~ 0.07. After identifying a periodic photometric signal received by WASP, we obtained CORALIE spectroscopic radial velocities and follow-up light curves with the Euler and TRAPPI... Read More about The EBLM project - III. A Saturn-size low-mass star at the hydrogen-burning limit.

WASP-167b/KELT-13b: joint discovery of a hot Jupiter transiting a rapidly rotating F1V star (2017)
Journal Article
Temple, L., Hellier, C., Albrow, M., Anderson, D., Bayliss, D., Beatty, T., …Zhou, G. (2017). WASP-167b/KELT-13b: joint discovery of a hot Jupiter transiting a rapidly rotating F1V star. Monthly Notices of the Royal Astronomical Society, 471(3), 2743 - 2752. https://doi.org/10.1093/mnras/stx1729

We report the joint WASP/KELT discovery of WASP-167b/KELT-13b, a transiting hot Jupiter with a 2.02-d orbit around a V = 10.5, F1V star with [Fe/H] = 0.1 ± 0.1. The 1.5 RJup planet was confirmed by Doppler tomography of the stellar line profiles duri... Read More about WASP-167b/KELT-13b: joint discovery of a hot Jupiter transiting a rapidly rotating F1V star.

Three new pulsating sdB stars discovered with SuperWASP (2017)
Journal Article
Smalley. (2017). Three new pulsating sdB stars discovered with SuperWASP. Monthly Notices of the Royal Astronomical Society, 5020 -5032. https://doi.org/10.1093/mnras/stx077

We present an analysis of three new pulsating subdwarf B stars discovered in the Super Wide Angle Search for Planets archive. Two of the stars, J1938+5609 and J0902-0720, are p-mode pulsators; J1938+5609 shows a pulsation at 231.62 d-1 (P = 373 s; 26... Read More about Three new pulsating sdB stars discovered with SuperWASP.

From Dense Hot Jupiter to Low Density Neptune: The Discovery of WASP-127b, WASP-136b and WASP-138b (2017)
Journal Article
Lam, K., Faedi, F., Brown, D., Anderson, D., Delrez, L., Gillon, M., …Wheatley, P. (2017). From Dense Hot Jupiter to Low Density Neptune: The Discovery of WASP-127b, WASP-136b and WASP-138b. Astronomy and Astrophysics, 599, Article A3. https://doi.org/10.1051/0004-6361/201629403

We report three newly discovered exoplanets from the SuperWASP survey. WASP-127b is a heavily inflated super-Neptune of mass 0.18±0.02 MJ and radius 1.37±0.04 RJ. This is one of the least massive planets discovered by the WASP project. It orbits a br... Read More about From Dense Hot Jupiter to Low Density Neptune: The Discovery of WASP-127b, WASP-136b and WASP-138b.

Peculiar architectures for the WASP-53 and WASP-81 planet-hosting systems (2017)
Journal Article
Triaud, A. H., Neveu-VanMalle, M., Lendl, M., Anderson, D. R., Collier Cameron, A., Delrez, L., …West, R. (2017). Peculiar architectures for the WASP-53 and WASP-81 planet-hosting systems. Monthly Notices of the Royal Astronomical Society, 467(2), 1714 - 1733. https://doi.org/10.1093/mnras/stx154

We report the detection of two new systems containing transiting planets. Both were identified by WASP as worthy transiting planet candidates. Radial velocity observations quickly verified that the photometric signals were indeed produced by two tran... Read More about Peculiar architectures for the WASP-53 and WASP-81 planet-hosting systems.