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Precise mass and radius measurements for the components of the bright solar-type eclipsing binary star V1094 Tau (2015)
Journal Article
Maxted, P., Hutcheon, R., Torres, G., Lacy, C., Southworth, J., Smalley, B., Pavlovski, K., Marschall, L., & Clausen, J. (2015). Precise mass and radius measurements for the components of the bright solar-type eclipsing binary star V1094 Tau. Astronomy & Astrophysics, 578, Article A25. https://doi.org/10.1051/0004-6361/201525873

V1094 Tau is bright eclipsing binary star with an orbital period close to 9 days containing two stars similar to the Sun. Our aim is to test models of Sun-like stars using precise and accurate mass and radius measurements for both stars in V1094 Tau.... Read More about Precise mass and radius measurements for the components of the bright solar-type eclipsing binary star V1094 Tau.

New OB star candidates in the Carina Arm around Westerlund 2 from VPHAS+ (2015)
Journal Article
Wright. (2015). New OB star candidates in the Carina Arm around Westerlund 2 from VPHAS+. Monthly Notices of the Royal Astronomical Society, 3855-3873. https://doi.org/10.1093/mnras/stv843

O and early B stars are at the apex of galactic ecology, but in the Milky Way, only a minority of them may yet have been identified. We present the results of a pilot study to select and parametrize OB star candidates in the Southern Galactic plane,... Read More about New OB star candidates in the Carina Arm around Westerlund 2 from VPHAS+.

A comparison of gyrochronological and isochronal age estimates for transiting exoplanet host stars (2015)
Journal Article
Maxted, P., Serenelli, A., & Southworth, J. (2015). A comparison of gyrochronological and isochronal age estimates for transiting exoplanet host stars. Astronomy & Astrophysics, 577, Article A90. https://doi.org/10.1051/0004-6361/201525774

Previous studies suggest that tidal interactions may be responsible for discrepancies between the ages of exoplanet host stars estimated using stellar models (isochronal ages) and age estimates based on the stars' rotation periods (gyrochronological... Read More about A comparison of gyrochronological and isochronal age estimates for transiting exoplanet host stars.

Transits and starspots in the WASP-6 planetary system (2015)
Journal Article
Tregloan-Reed, J., Southworth, J., Burgdorf, M., Calchi Novati, S., Dominik, M., Finet, F., Jørgensen, U., Maier, G., Mancini, L., Prof, S., Ricci, D., Snodgrass, C., Bozza, V., Browne, P., Dodds, P., Gerner, T., Harpsøe, K., Hinse, T., Hundertmark, M., Kains, N., …Surdej, J. (2015). Transits and starspots in the WASP-6 planetary system. Monthly Notices of the Royal Astronomical Society, 450(2), 1760 -1769. https://doi.org/10.1093/mnras/stv730

We present updates to PRISM, a photometric transit-starspot model, and GEMC, a hybrid optimization code combining MCMC and a genetic algorithm. We then present high-precision photometry of four transits in the WASP-6 planetary system, two of which co... Read More about Transits and starspots in the WASP-6 planetary system.

Small amplitude waves in a pre-stressed compressible elastic layer with one fixed and one free face (2015)
Journal Article
Lashhab, M., Rogerson, G., & Prikazchikova, L. (2015). Small amplitude waves in a pre-stressed compressible elastic layer with one fixed and one free face. Zeitschrift für Angewandte Mathematik und Physik, 66, 2741 -2757. https://doi.org/10.1007/s00033-015-0509-y

We address the problem of wave propagation in a pre-stressed elastic layer with mixed boundary conditions, the layer having one fixed and one free face. Numerical analysis provides a good initial insight into the influence of these boundary condition... Read More about Small amplitude waves in a pre-stressed compressible elastic layer with one fixed and one free face.

The UK Infrared Telescope M33 monitoring project - IV. Variable red giant stars across the galactic disc (2015)
Journal Article
Van Loon. (2015). The UK Infrared Telescope M33 monitoring project - IV. Variable red giant stars across the galactic disc. Monthly Notices of the Royal Astronomical Society, 3973 -3991. https://doi.org/10.1093/mnras/stu2637

We have conducted a near-infrared monitoring campaign at the UK InfraRed Telescope, of the Local Group spiral galaxy M33 (Triangulum). The main aim was to identify stars in the very final stage of their evolution, and for which the luminosity is more... Read More about The UK Infrared Telescope M33 monitoring project - IV. Variable red giant stars across the galactic disc.

The Gaia-ESO Survey: A globular cluster escapee in the Galactic halo (2015)
Journal Article
Jeffries. (2015). The Gaia-ESO Survey: A globular cluster escapee in the Galactic halo. Astronomy & Astrophysics, https://doi.org/10.1051/0004-6361/201425554

A small fraction of the halo field is made up of stars that share the light element (Z = 13) anomalies characteristic of second generation globular cluster (GC) stars. The ejected stars shed light on the formation of the Galactic halo by tracing the... Read More about The Gaia-ESO Survey: A globular cluster escapee in the Galactic halo.

WASP-20b and WASP-28b: a hot Saturn and a hot Jupiter in near-aligned orbits around solar-type stars (2015)
Journal Article
Hellier, Smalley, & Maxted. (2015). WASP-20b and WASP-28b: a hot Saturn and a hot Jupiter in near-aligned orbits around solar-type stars. Astronomy & Astrophysics, https://doi.org/10.1051/0004-6361/201423591

We report the discovery of the planets WASP-20b and WASP-28b along with measurements of their sky-projected orbital obliquities. WASP-20b is an inflated, Saturn-mass planet (0.31?MJup; 1.46?RJup) in a 4.9-day, near-aligned (? = 12.7 ± 4.2°) orbit aro... Read More about WASP-20b and WASP-28b: a hot Saturn and a hot Jupiter in near-aligned orbits around solar-type stars.

Low-frequency perturbations of rigid body motions of a viscoelastic inhomogeneous bar (2015)
Journal Article
Kaplunov. (2015). Low-frequency perturbations of rigid body motions of a viscoelastic inhomogeneous bar. Mechanics of Time-Dependent Materials, 135 -151. https://doi.org/10.1007/s11043-015-9256-x

This paper deals with a low-frequency analysis of a viscoelastic inhomogeneous bar subject to end loads. The spatial variation of the problem parameters is taken into consideration. Explicit asymptotic corrections to the conventional equations of rig... Read More about Low-frequency perturbations of rigid body motions of a viscoelastic inhomogeneous bar.

Spots on Am stars (2015)
Journal Article
Balona, L., Catanzaro, G., Abedigamba, O., Ripepi, V., & Smalley, B. (2015). Spots on Am stars. Monthly Notices of the Royal Astronomical Society, 1378 - 1388. https://doi.org/10.1093/mnras/stv076

We investigate the light variations of 15 Am stars using four years of high-precision photometry from the Kepler spacecraft and an additional 14 Am stars from the K2 Campaign 0 field. We find that most of the Am stars in the Kepler field have light c... Read More about Spots on Am stars.

Probing the local bubble with diffuse interstellar abnds. II. The Dib properties in the northern hemisphere (2015)
Journal Article
Van Loon. (2015). Probing the local bubble with diffuse interstellar abnds. II. The Dib properties in the northern hemisphere. Astrophysical Journal, https://doi.org/10.1088/0004-637X/800/1/64

We present a new high signal-to-noise ratio spectroscopic survey of the Northern hemisphere to probe the Local Bubble and its surroundings using the ?5780 Å and ?5797 Å diffuse interstellar bands (DIBs). We observed 432 sightlines to a distance of 20... Read More about Probing the local bubble with diffuse interstellar abnds. II. The Dib properties in the northern hemisphere.

Probing the local bubble with diffuse interstellar bands. III. The northern hemisphere data and catalog (2015)
Journal Article
Van Loon. (2015). Probing the local bubble with diffuse interstellar bands. III. The northern hemisphere data and catalog. Astrophysical Journal, 33. https://doi.org/10.1088/0067-0049/216/2/33

We present new high signal-to-noise ratio (S/N) observations of the diffuse interstellar bands (DIBs) in the Local Bubble and its surroundings. We observed 432 sightlines and obtain the equivalent widths of the ?5780 and ?5797 Å DIBs up to a distance... Read More about Probing the local bubble with diffuse interstellar bands. III. The northern hemisphere data and catalog.

An infrared census of dust in nearby galaxies with Spitxer (Dustings). II. Discovery of metal-poor dusty AGB stars (2015)
Journal Article
Van Loon. (2015). An infrared census of dust in nearby galaxies with Spitxer (Dustings). II. Discovery of metal-poor dusty AGB stars. Astrophysical Journal, 51. https://doi.org/10.1088/0004-637X/800/1/51

The DUSTiNGS survey (DUST in Nearby Galaxies with Spitzer) is a 3.6 and 4.5 µm imaging survey of 50 nearby dwarf galaxies designed to identify dust-producing asymptotic giant branch (AGB) stars and massive stars. Using two epochs, spaced approximatel... Read More about An infrared census of dust in nearby galaxies with Spitxer (Dustings). II. Discovery of metal-poor dusty AGB stars.

Synchrotron x-ray diffraction study of micro-patterns obtained by spatially selective hydrogenation of GaAsN (2015)
Journal Article
Pettinari, G., Balakrishnan, N., Ciatto, G., Birindelli, S., Felici, M., Polimeni, A., Berenguer, F., & Patanè, A. (2015). Synchrotron x-ray diffraction study of micro-patterns obtained by spatially selective hydrogenation of GaAsN. Applied Physics Letters, 051905 - 051905. https://doi.org/10.1063/1.4907324

We report a comparative synchrotron radiation x-ray diffraction study of GaAs1-yNy micro-structures obtained by two different patterning methods: spatially selective H incorporation achieved by using H-opaque masks and spatially selective H removal a... Read More about Synchrotron x-ray diffraction study of micro-patterns obtained by spatially selective hydrogenation of GaAsN.

In situ apparatus for the study of clathrate hydrates relevant to solar system bodies using synchrotron X-ray diffraction and Raman spectroscopy (Research Note) (2015)
Journal Article
(2015). In situ apparatus for the study of clathrate hydrates relevant to solar system bodies using synchrotron X-ray diffraction and Raman spectroscopy (Research Note). Astronomy & Astrophysics, https://doi.org/10.1051/0004-6361/201424482

Context. Clathrate hydrates are believed to play a significant role in various solar system environments, e.g. comets, and the surfaces and interiors of icy satellites. However, the structural factors governing their formation and dissociation are po... Read More about In situ apparatus for the study of clathrate hydrates relevant to solar system bodies using synchrotron X-ray diffraction and Raman spectroscopy (Research Note).

A search for non-pulsating, chemically normal stars in the delta Scuti instability strip using Kepler data (2015)
Journal Article
Murphy, S. J., Bedding, T. R., Niemczura, E., Kurtz, D. W., & Smalley, B. (2015). A search for non-pulsating, chemically normal stars in the delta Scuti instability strip using Kepler data. Monthly Notices of the Royal Astronomical Society, 447(4), 3948 -3959. https://doi.org/10.1093/mnras/stu2749

We identify stars in the d Sct instability strip that do not pulsate in p modes at the 50-µmag limit, using Kepler data. Spectral classification and abundance analyses from high-resolution spectroscopy allow us to identify chemically peculiar stars,... Read More about A search for non-pulsating, chemically normal stars in the delta Scuti instability strip using Kepler data.

Hot subdwarf binaries from the MUCHFUSS project - Analysis of 12 new systems and a study of the short-period binary population (2015)
Journal Article
Kupfer, T., Geier, S., Heber, U., Østensen, R., Barlow, B., Maxted, P., Heuser, C., Schaffenroth, V., & Gänsicke, B. (2015). Hot subdwarf binaries from the MUCHFUSS project - Analysis of 12 new systems and a study of the short-period binary population. Astronomy & Astrophysics, A44 -?. https://doi.org/10.1051/0004-6361/201425213

The project Massive Unseen Companions to Hot Faint Underluminous Stars from SDSS (MUCHFUSS) aims at finding hot subdwarf stars with massive compact companions like massive white dwarfs (M>1.0 M$_\odot$), neutron stars, or stellar-mass black holes. We... Read More about Hot subdwarf binaries from the MUCHFUSS project - Analysis of 12 new systems and a study of the short-period binary population.

Multiwaveband photometry of the irradiated brown dwarf WD0137-349B (2015)
Journal Article
Casewell, S., Lawrie, K., Maxted, P., Marley, M., Fortney, J., Rimmer, P., Littlefair, S., Wynn, G., Burleigh, M., & Helling, C. (2015). Multiwaveband photometry of the irradiated brown dwarf WD0137-349B. Monthly Notices of the Royal Astronomical Society, 447(4), 3218 -3226. https://doi.org/10.1093/mnras/stu2721

WD0137-349 is a white dwarf–brown dwarf binary system in a 116 min orbit. We present radial velocity observations and multiwaveband photometry from V, R and I in the optical, to J, H and Ks in the near-IR and [3.6], [4.5], [5.8] and [8.0] µm in the m... Read More about Multiwaveband photometry of the irradiated brown dwarf WD0137-349B.