Dr Barry Smalley's Outputs (13)

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., McCormac, J., Bayliss, D., Soto, M., Csizmadia, S., Chaushev, A., Burleigh, M. R., Alexander, R., Armstrong, D. J., Bouchy, F., Briegal, J. T., Cabrera, J., Casewell, S. L., Chazelas, B., …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We present a study of the long-term optical variability of young T Tauri stars using previously unpublished data from the Super-Wide Angle Search for Planets (SuperWASP) project.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., Alsubai, K. A., Anderson, D. R., Armstrong, D. J., Barros, S. C. C., Bouchy, F., Boumis, P., Brown, D. J. A., Faedi, F., Hay, K., Hebb, L., Kiefer, F., Mancini, L., Maxted, P. F. L., …Wheatley, P. J. (2018). Machine-learning Approaches to Exoplanet Transit Detection and Candidate Validation in Wide-field Ground-based Surveys. Monthly Notices of the Royal Astronomical Society, 483(4), 5534-5547. https://doi.org/10.1093/mnras/sty3146

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., Delrez, L., Gillon, M., Hellier, C., Jehin, E., Maxted, P., Dyregaard Nielsen, L., Pepe, F., Pollacco, D., Queloz, D., Ségransan, D., Southworth, J., Smalley, B., Thompson, S., …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., Gillon, M., Hellier, C., Jehin, E., Lendl, M., Maxted, P. F. L., Pepe, F., Pollacco, D., Queloz, D., Segransan, D., Smalley, B., Udry, S., & 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., Joyce, M., & 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. F., Southworth, J., Smalley, B., Jørgensen, U. G., Dominik, M., Andersen, M. I., Bozza, V., Bramich, D. M., Burgdorf, M. J., Ciceri, S., D’Ago, G., Figuera Jaimes, R., Gu, S.-H., Hinse, T. C., Henning, T., Hundertmark, M., Kains, N., Kerins, E., Korhonen, H., …Wertz, O. (2018). High-resolution Imaging of Transiting Extrasolar Planetary systems (HITEP). II. Lucky Imaging results from 2015 and 2016. Astronomy and Astrophysics, 610, 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. Bulgarian Astronomical Journal, 27-36.

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.