Skip to main content

Research Repository

Advanced Search

Water Dynamics in Shewanella oneidensis at Ambient and High Pressure using Quasi-Elastic Neutron Scattering (2016)
Journal Article
(2016). Water Dynamics in Shewanella oneidensis at Ambient and High Pressure using Quasi-Elastic Neutron Scattering. Scientific reports, 18862 -?. https://doi.org/10.1038/srep18862

Quasielastic neutron scattering (QENS) is an ideal technique for studying water transport and relaxation dynamics at pico- to nanosecond timescales and at length scales relevant to cellular dimensions. Studies of high pressure dynamic effects in live... Read More about Water Dynamics in Shewanella oneidensis at Ambient and High Pressure using Quasi-Elastic Neutron Scattering.

The Chandra/HETG view of NGC 1365 in a Compton-thick state (2015)
Journal Article
Nardini, E., Gofford, J., Reeves, J. N., Braito, V., Risaliti, G., & Costa, M. (2015). The Chandra/HETG view of NGC 1365 in a Compton-thick state. Monthly Notices of the Royal Astronomical Society, 453(3), 2558-2568. https://doi.org/10.1093/mnras/stv1826

We present the analysis of a Chandra High-Energy Transmission Grating (HETG) observation of the local Seyfert galaxy NGC 1365. The source, well known for its dramatic X-ray spectral variability, was caught in a reflection-dominated, Compton-thick sta... Read More about The Chandra/HETG view of NGC 1365 in a Compton-thick state.

X-ray emission from massive stars in CYG OB2 (2015)
Journal Article
Wright. (2015). X-ray emission from massive stars in CYG OB2. Astrophysical Journal Supplement, https://doi.org/10.1088/0067-0049/221/1/1

We report on the analysis of the Chandra-ACIS data of O, B, and WR stars in the young association Cyg OB2. X-ray spectra of 49 O-stars, 54 B-stars, and 3 WR-stars are analyzed and for the brighter sources, the epoch dependence of the X-ray fluxes is... Read More about X-ray emission from massive stars in CYG OB2.

λ Bootis stars in the SuperWASP survey (2015)
Journal Article
Paunzen, E., Skarka, M., Walczak, P., Holdsworth, D., Smalley, B., West, R., & Janík, J. (2015). λ Bootis stars in the SuperWASP survey. Monthly Notices of the Royal Astronomical Society, 453(2), 1241 -1248. https://doi.org/10.1093/mnras/stv1652

We have analysed around 170 000 individual photometric WASP (Wide Angle Search for Planets) measurements of 15 well-established ? Bootis stars to search for variability. The ? Bootis stars are a small group of late-B to early-F, Pop I, stars that sho... Read More about λ Bootis stars in the SuperWASP survey.

Spectroscopic survey of Kepler stars.(a similar to...) I. HERMES/Mercator observations of A- and F-type stars (2015)
Journal Article
Smalley. (2015). Spectroscopic survey of Kepler stars.(a similar to...) I. HERMES/Mercator observations of A- and F-type stars. Monthly Notices of the Royal Astronomical Society, 2764 -2783. https://doi.org/10.1093/mnras/stv528

The Kepler space mission provided near-continuous and high-precision photometry of about 207 000 stars, which can be used for asteroseismology. However, for successful seismic modeling it is equally important to have accurate stellar physical paramet... Read More about Spectroscopic survey of Kepler stars.(a similar to...) I. HERMES/Mercator observations of A- and F-type stars.

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.

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.

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.

The influence of supernova remnants on the interstellar medium in the large magellanic cloud seen at 20-600 mu m wavelengths (2015)
Journal Article
Van Loon. (2015). The influence of supernova remnants on the interstellar medium in the large magellanic cloud seen at 20-600 mu m wavelengths. Astrophysical Journal, https://doi.org/10.1088/0004-637X/799/1/50

We present the analysis of supernova remnants (SNRs) in the Large Magellanic Cloud (LMC) and their influence on the environment at far-infrared (FIR) and submillimeter wavelengths. We use new observations obtained with the Herschel Space Observatory... Read More about The influence of supernova remnants on the interstellar medium in the large magellanic cloud seen at 20-600 mu m wavelengths.

Study of Eu3+ -> Eu2+ reduction in BaAl2O4:Eu prepared in different gas atmospheres (2015)
Journal Article
Jackson. (2015). Study of Eu3+ -> Eu2+ reduction in BaAl2O4:Eu prepared in different gas atmospheres. Materials Research Bulletin, 348 -351. https://doi.org/10.1016/j.materresbull.2014.10.054

The effect of different gas atmospheres such as H2(g), synthetic air, carbon monoxide (CO) and nitrogen (N2) on the Eu3+ ? Eu2+ reduction process during the synthesis of Eu-doped BaAl2O4 was studied using synchrotron radiation. The Eu3+ ? Eu2+ reduct... Read More about Study of Eu3+ -> Eu2+ reduction in BaAl2O4:Eu prepared in different gas atmospheres.

An infrared census of dust in nearby galaxies with Spitzer (Dustings). I. Overview (2014)
Journal Article
Van Loon. (2014). An infrared census of dust in nearby galaxies with Spitzer (Dustings). I. Overview. Astrophysical Journal, https://doi.org/10.1088/0067-0049/216/1/10

Nearby resolved dwarf galaxies provide excellent opportunities for studying the dust-producing late stages of stellar evolution over a wide range of metallicity (–2.7 lesssim [Fe/H] lesssim –1.0). Here, we describe DUSTiNGS (DUST in Nearby Galaxies w... Read More about An infrared census of dust in nearby galaxies with Spitzer (Dustings). I. Overview.

The star formation history of the Magellanic Clouds derived from long-period variable star counts (2014)
Journal Article
Van Loon. (2014). The star formation history of the Magellanic Clouds derived from long-period variable star counts. Monthly Notices of the Royal Astronomical Society, 2214 -2222. https://doi.org/10.1093/mnras/stu1807

We present the first reconstruction of the star formation history (SFH) of the Large and Small Magellanic Clouds (LMC and SMC) using Long Period Variable stars. These cool evolved stars reach their peak luminosity in the near-infrared; thus, their K-... Read More about The star formation history of the Magellanic Clouds derived from long-period variable star counts.

Determining stellar macroturbulence using asteroseismic rotational velocities from Kepler (2014)
Journal Article
Smalley. (2014). Determining stellar macroturbulence using asteroseismic rotational velocities from Kepler. Monthly Notices of the Royal Astronomical Society, 3592 -3602. https://doi.org/10.1093/mnras/stu1692

The Rossiter–McLaughlin effect observed for transiting exoplanets often requires prior knowledge of the stellar projected equatorial rotational velocity (v?sin?i). This is usually provided by measuring the broadening of spectral lines, however this m... Read More about Determining stellar macroturbulence using asteroseismic rotational velocities from Kepler.

Spectral and morphological analysis of the remnant of supernova 1987A with Alma and Atca (2014)
Journal Article
Van Loon. (2014). Spectral and morphological analysis of the remnant of supernova 1987A with Alma and Atca. Astrophysical Journal, https://doi.org/10.1088/0004-637X/796/2/82

We present a comprehensive spectral and morphological analysis of the remnant of supernova (SN) 1987A with the Australia Telescope Compact Array (ATCA) and the Atacama Large Millimeter/submillimeter Array (ALMA). The non-thermal and thermal component... Read More about Spectral and morphological analysis of the remnant of supernova 1987A with Alma and Atca.