Period and amplitude variations in post-common-envelope eclipsing binaries observed with SuperWASP (2014)
Journal Article
Smalley, Hellier, C., & Maxted, P. (2014). Period and amplitude variations in post-common-envelope eclipsing binaries observed with SuperWASP. Astronomy & Astrophysics, https://doi.org/10.1051/0004-6361/201424027

Period or amplitude variations in eclipsing binaries may reveal the presence of additional massive bodies in the system, such as circumbinary planets. Here, we have studied twelve previously-known eclipsing post-common-envelope binaries for evidence... Read More about Period and amplitude variations in post-common-envelope eclipsing binaries observed with SuperWASP.

A window on exoplanet dynamical histories: Rossiter-McLaughlin observations of WASP-13b and WASP-32b (2014)
Journal Article
Smalley, Maxted, & Hellier. (2014). A window on exoplanet dynamical histories: Rossiter-McLaughlin observations of WASP-13b and WASP-32b. Monthly Notices of the Royal Astronomical Society, 3392 -3401. https://doi.org/10.1093/mnras/stu520

We present Rossiter–McLaughlin observations of WASP-13b and WASP-32b and determine the sky-projected angle between the normal of the planetary orbit and the stellar rotation axis (?). WASP-13b and WASP-32b both have prograde orbits and are consistent... Read More about A window on exoplanet dynamical histories: Rossiter-McLaughlin observations of WASP-13b and WASP-32b.

The VST Photometric Ha Survey of the Southern Galactic Plane and Bulge (VPHAS+) (2014)
Journal Article
Wright, N. J. (2014). The VST Photometric Ha Survey of the Southern Galactic Plane and Bulge (VPHAS+). Monthly Notices of the Royal Astronomical Society, 2036-2058. https://doi.org/10.1093/mnras/stu394

The VST Photometric Ha Survey of the Southern Galactic Plane and Bulge (VPHAS+) is surveying the southern Milky Way in u, g, r, i and Ha at ~1?arcsec angular resolution. Its footprint spans the Galactic latitude range -5o < b < +5° at all longitudes... Read More about The VST Photometric Ha Survey of the Southern Galactic Plane and Bulge (VPHAS+).

HD 54272, a classical lambda Bootis star and gamma Doradus pulsator (2014)
Journal Article
Smalley. (2014). HD 54272, a classical lambda Bootis star and gamma Doradus pulsator. Monthly Notices of the Royal Astronomical Society, 1020 -1026. https://doi.org/10.1093/mnras/stu415

We detect the second known ? Bootis star (HD 54272) which exhibits ? Doradus-type pulsations. The star was formerly misidentified as a RR Lyrae variable. The ? Bootis stars are a small group (only 2?per?cent) of late B to early F-type, Population I s... Read More about HD 54272, a classical lambda Bootis star and gamma Doradus pulsator.

Populations of rotating stars III. SYCLIST, the new Geneva Population Synthesis code (2014)
Journal Article
(2014). Populations of rotating stars III. SYCLIST, the new Geneva Population Synthesis code. Astronomy & Astrophysics,

(abridged) We present a new tool for building synthetic colour-magnitude diagrams of coeval stellar populations. We study, from a theoretical point of view, the impact of axial rotation of stars on various observed properties of single-aged stellar p... Read More about Populations of rotating stars III. SYCLIST, the new Geneva Population Synthesis code.

Evolution of surface CNO abundances in massive stars (2014)
Journal Article
(2014). Evolution of surface CNO abundances in massive stars. Astronomy & Astrophysics, https://doi.org/10.1051/0004-6361/201220602

The nitrogen to carbon (N/C) and nitrogen to oxygen (N/O) ratios are the most sensitive quantities to mixing in stellar interiors of intermediate and massive stars. We further investigate the theoretical properties of these ratios as well as put in c... Read More about Evolution of surface CNO abundances in massive stars.

On the effect of rotation on populations of classical Cepheids I. Predictions at solar metallicity (2014)
Journal Article
(2014). On the effect of rotation on populations of classical Cepheids I. Predictions at solar metallicity. Astronomy & Astrophysics,

[Abridged] We aim to improve the understanding of Cepheids from an evolutionary perspective and establish the role of rotation in the Cepheid paradigm. In particular, we are interested in the contribution of rotation to the problem of Cepheid masses,... Read More about On the effect of rotation on populations of classical Cepheids I. Predictions at solar metallicity.

Normal A0-A1 stars with low v sin i (2014)
Journal Article
Smalley. (2014). Normal A0-A1 stars with low v sin i. Astronomy & Astrophysics, 265 - 269. https://doi.org/10.1051/0004-6361/201322762

Context. The study of rotational velocity distributions for normal stars requires an accurate spectral characterization of the objects in order to avoid polluting the results with undetected binary or peculiar stars. This piece of information is a ke... Read More about Normal A0-A1 stars with low v sin i.

Normal A0-A1 stars with low rotational velocities I. Abundance determination and classification (2014)
Journal Article
Smalley. (2014). Normal A0-A1 stars with low rotational velocities I. Abundance determination and classification. Astronomy & Astrophysics, https://doi.org/10.1051/0004-6361/201322762

Context. The study of rotational velocity distributions for normal stars requires an accurate spectral characterization of the objects in order to avoid polluting the results with undetected binary or peculiar stars. This piece of information is a ke... Read More about Normal A0-A1 stars with low rotational velocities I. Abundance determination and classification.

Ultraviolet-excess sources with a red/infrared counterpart: low-mass companions, debris discs and QSO selection (2014)
Journal Article
Wright, N. J. (2014). Ultraviolet-excess sources with a red/infrared counterpart: low-mass companions, debris discs and QSO selection. Monthly Notices of the Royal Astronomical Society, 2-13. https://doi.org/10.1093/mnras/stt1492

We present the result of the cross-matching between ultraviolet (UV)-excess sources selected from the UV-Excess Survey of the Northern Galactic Plane (UVEX) and several infrared (IR) surveys (2MASS, UKIDSS and WISE). From the position in the (J - H)... Read More about Ultraviolet-excess sources with a red/infrared counterpart: low-mass companions, debris discs and QSO selection.

SPITZER OBSERVATIONS OF THE THERMAL EMISSION FROM WASP-43b (2014)
Journal Article
Hellier. (2014). SPITZER OBSERVATIONS OF THE THERMAL EMISSION FROM WASP-43b. Astrophysical Journal, https://doi.org/10.1088/0004-637X/781/2/116

WASP-43b is one of the closest-orbiting hot Jupiters, with a semimajor axis of a = 0.01526 ± 0.00018 AU and a period of only 0.81 days. However, it orbits one of the coolest stars with a hot Jupiter (T * = 4520 ± 120 K), giving the planet a modest eq... Read More about SPITZER OBSERVATIONS OF THE THERMAL EMISSION FROM WASP-43b.

The Magnetospheric Boundary in Cataclysmic Variables (2014)
Presentation / Conference Contribution
Hellier, C. The Magnetospheric Boundary in Cataclysmic Variables. Presented at EPJ Web of Conferences

The magnetic cataclysmic variables (MCVs) present a wealth of observational diagnostics for studying accretion flows interacting with a magnetosphere. Spin-period pulsations from the rotation of the white dwarf are seen in optical light, in the UV an... Read More about The Magnetospheric Boundary in Cataclysmic Variables.

The ionized nebula surrounding the red supergiant W26 in Westerlund 1 (2014)
Journal Article
Wright. (2014). The ionized nebula surrounding the red supergiant W26 in Westerlund 1. Monthly Notices of the Royal Astronomical Society, 1-5. https://doi.org/10.1093/mnrasl/slt127

We present Ha images of an ionized nebula surrounding the M2-5Ia red supergiant (RSG) W26 in the massive star cluster Westerlund 1. The nebula consists of a circumstellar shell or ring ~0.1 pc in diameter and a triangular nebula ~0.2 pc from the star... Read More about The ionized nebula surrounding the red supergiant W26 in Westerlund 1.

Dynamical evolution of star-forming regions (2013)
Journal Article
Wright. (2013). Dynamical evolution of star-forming regions. Monthly Notices of the Royal Astronomical Society, 620-638. https://doi.org/10.1093/mnras/stt2231

We model the dynamical evolution of star-forming regions with a wide range of initial properties. We follow the evolution of the regions’ substructure using the Q-parameter, we search for dynamical mass segregation using the ?MSR technique, and we al... Read More about Dynamical evolution of star-forming regions.

Dynamical evolution of star-forming regions (2013)
Journal Article
Parker, R. J., Wright, N. J., Goodwin, S. P., & Meyer, M. R. (2013). Dynamical evolution of star-forming regions. Monthly Notices of the Royal Astronomical Society, 438(1), 620-638. https://doi.org/10.1093/mnras/stt2231

We model the dynamical evolution of star-forming regions with a wide range of initial properties. We follow the evolution of the regions’ substructure using the Q-parameter, we search for dynamical mass segregation using the ?MSR technique, and we al... Read More about Dynamical evolution of star-forming regions.

Circum-stellar medium around rotating massive stars at solar metallicity (2013)
Journal Article
(2013). Circum-stellar medium around rotating massive stars at solar metallicity. Astronomy & Astrophysics,

Aims. Observations show nebulae around some massive stars but not around others. If observed, their chemical composition is far from homogeneous. Our goal is to put these observational features into the context of the evolution of massive stars and t... Read More about Circum-stellar medium around rotating massive stars at solar metallicity.

Fundamental properties of core-collapse Supernova and GRB progenitors: predicting the look of massive stars before death (2013)
Journal Article
(2013). Fundamental properties of core-collapse Supernova and GRB progenitors: predicting the look of massive stars before death. Astronomy & Astrophysics, https://doi.org/10.1051/0004-6361/201321906

We investigate the fundamental properties of core-collapse Supernova (SN) progenitors from single stars at solar metallicity. We combine Geneva stellar evolutionary models with initial masses of Mini=20-120 Msun with atmospheric/wind models using CMF... Read More about Fundamental properties of core-collapse Supernova and GRB progenitors: predicting the look of massive stars before death.

WASP-8b: characterization of a cool and eccentric exoplanet with Spitzer (2013)
Journal Article
(2013). WASP-8b: characterization of a cool and eccentric exoplanet with Spitzer. Astrophysical Journal, https://doi.org/10.1088/0004-637X/768/1/42

WASP-8b has 2.18 times Jupiter's mass and is on an eccentric ($e=0.31$) 8.16-day orbit. With a time-averaged equilibrium temperature of 948 K, it is one of the least-irradiated hot Jupiters observed with the Spitzer Space Telescope. We have analyzed... Read More about WASP-8b: characterization of a cool and eccentric exoplanet with Spitzer.

On the relationship between the size and surface coverage of starspots on magnetically active low-mass stars (2013)
Journal Article
Jackson, R. J., & Jeffries, R. D. (2013). On the relationship between the size and surface coverage of starspots on magnetically active low-mass stars. Monthly Notices of the Royal Astronomical Society, 431(2), 1883-1890. https://doi.org/10.1093/mnras/stt304

We present a model that predicts the light curve amplitude distribution for an ensemble of low-mass magnetically active stars, under the assumptions that stellar spin axes are randomly orientated and that cool starspots have a characteristic scale le... Read More about On the relationship between the size and surface coverage of starspots on magnetically active low-mass stars.

Spitzer 3.6 and 4.5 mu m full-orbit light curves of WASP-18 (2012)
Journal Article
Maxted, P., Anderson, D. R., Doyle, A. P., Gillon, M., Harrington, J., Iro, N., Jehin, E., Lafreniere, D., Smalley, B., & Southworth, J. (2013). Spitzer 3.6 and 4.5 mu m full-orbit light curves of WASP-18. Monthly Notices of the Royal Astronomical Society, 428(3), 2645-2660. https://doi.org/10.1093/mnras/sts231

We present new lightcurves of the massive hot Jupiter system WASP-18 obtained with the Spitzer spacecraft covering the entire orbit at 3.6 micron and 4.5 micron. These lightcurves are used to measure the amplitude, shape and phase of the thermal phas... Read More about Spitzer 3.6 and 4.5 mu m full-orbit light curves of WASP-18.