Skip to main content

Research Repository

Advanced Search

An Infrared Census of DUST in Nearby Galaxies with Spitzer (DUSTiNGS). IV. Discovery of High-redshift AGB Analogs (2017)
Journal Article
Van Loon. (2017). An Infrared Census of DUST in Nearby Galaxies with Spitzer (DUSTiNGS). IV. Discovery of High-redshift AGB Analogs. Astrophysical Journal, https://doi.org/10.3847/1538-4357/aa9892

The survey for DUST in Nearby Galaxies with Spitzer (DUSTiNGS) identified several candidate Asymptotic Giant Branch (AGB) stars in nearby dwarf galaxies and showed that dust can form even in very metal-poor systems (${\boldsymbol{Z}}\sim 0.008\,{Z}_{... Read More about An Infrared Census of DUST in Nearby Galaxies with Spitzer (DUSTiNGS). IV. Discovery of High-redshift AGB Analogs.

The Gaia_ESO Survey: double, triple and quadruple-line spectroscopic binary candidates (2017)
Journal Article
Jeffries. (2017). The Gaia_ESO Survey: double, triple and quadruple-line spectroscopic binary candidates. Astronomy and Astrophysics, https://doi.org/10.1051/0004-6361/201730442

Context. The Gaia-ESO Survey (GES) is a large spectroscopic survey that provides a unique opportunity to study the distribution of spectroscopic multiple systems among different populations of the Galaxy. Aims. Our aim is to detect binarity/multiplic... Read More about The Gaia_ESO Survey: double, triple and quadruple-line spectroscopic binary candidates.

Uncertainties in the production of p nuclides in thermonuclear supernovae determined by Monte Carlo variations (2017)
Journal Article
Nishimura(西村信哉), N., Rauscher, T., Hirschi, R., Murphy, A. S. J., Cescutti, G., & Travaglio, C. (2018). Uncertainties in the production of p nuclides in thermonuclear supernovae determined by Monte Carlo variations. Monthly Notices of the Royal Astronomical Society, 474(3), 3133 -3139. https://doi.org/10.1093/mnras/stx3033

Thermonuclear supernovae originating from the explosion of a white dwarf accreting mass from a companion star have been suggested as a site for the production of p nuclides. Such nuclei are produced during the explosion, in layers enriched with seed... Read More about Uncertainties in the production of p nuclides in thermonuclear supernovae determined by Monte Carlo variations.

Possible detection of a bimodal cloud distribution in the atmosphere of HAT-P-32 A b from multiband photometry (2017)
Journal Article
Tregloan-Reed, J., Southworth, J., Mancini, L., Mollière, P., Ciceri, S., Bruni, I., …Henning, T. (2018). Possible detection of a bimodal cloud distribution in the atmosphere of HAT-P-32 A b from multiband photometry. Monthly Notices of the Royal Astronomical Society, 474(4), 5485 - 5499. https://doi.org/10.1093/mnras/stx3147

We present high-precision photometry of eight separate transit events in the HAT-P-32 planetary system. One transit event was observed simultaneously by two telescopes of which one obtained a simultaneous multiband light curve in three optical bands,... Read More about Possible detection of a bimodal cloud distribution in the atmosphere of HAT-P-32 A b from multiband photometry.

NuSTAR View of the Black Hole Wind in the Galaxy Merger IRAS F11119+3257 (2017)
Journal Article
(2017). NuSTAR View of the Black Hole Wind in the Galaxy Merger IRAS F11119+3257. Astrophysical Journal, 151. https://doi.org/10.3847/1538-4357/aa9579

Galactic winds driven by active galactic nuclei (AGNs) have been invoked to play a fundamental role in the co-evolution between supermassive black holes and their host galaxies. Finding observational evidence of such feedback mechanisms is of crucial... Read More about NuSTAR View of the Black Hole Wind in the Galaxy Merger IRAS F11119+3257.

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 VMC Survey. XXVII. Young Stellar Structures in the LMC’s Bar Star-forming Complex (2017)
Journal Article
Van Loon, J., & Oliveira, J. (2017). The VMC Survey. XXVII. Young Stellar Structures in the LMC’s Bar Star-forming Complex. Astrophysical Journal, 149 -149. https://doi.org/10.3847/1538-4357/aa911e

Star formation is a hierarchical process, forming young stellar structures of star clusters, associations, and complexes over a wide range of scales. The star-forming complex in the bar region of the Large Magellanic Cloud is investigated with upper... Read More about The VMC Survey. XXVII. Young Stellar Structures in the LMC’s Bar Star-forming Complex.

A deep X-ray view of the bare AGN Ark 120. III. X-ray timing analysis and multiwavelength variability (2017)
Journal Article
(2017). A deep X-ray view of the bare AGN Ark 120. III. X-ray timing analysis and multiwavelength variability. Monthly Notices of the Royal Astronomical Society, 3237-3258. https://doi.org/10.1093/mnras/stx2889

We present the spectral/timing properties of the bare Seyfert galaxy Ark 120 through a deep ~420ks XMM-Newton campaign plus recent NuSTAR observations and a ~6-month Swift monitoring campaign. We investigate the spectral decomposition through fractio... Read More about A deep X-ray view of the bare AGN Ark 120. III. X-ray timing analysis and multiwavelength variability.

The SuperWASP catalogue of 4963 RR Lyr stars: identification of 983 Blazhko effect candidates (2017)
Journal Article
(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

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 characterist... Read More about The SuperWASP catalogue of 4963 RR Lyr stars: identification of 983 Blazhko effect candidates.

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.

Are some CEMP-s stars the daughters of spinstars? (2017)
Journal Article
Choplin, A., Hirschi, R., Meynet, G., & Ekström, S. (2017). Are some CEMP-s stars the daughters of spinstars?. Astronomy and Astrophysics, 607, Article L3. https://doi.org/10.1051/0004-6361/201731948

Carbon-enhanced metal-poor (CEMP)-s stars are long-lived low-mass stars with a very low iron content as well as overabundances of carbon and s-elements. Their peculiar chemical pattern is often explained by pollution from an asymptotic giant branch (... Read More about Are some CEMP-s stars the daughters of spinstars?.

The ESO Diffuse Interstellar Bands Large Exploration Survey (EDIBLES) - I. Project description, survey sample, and quality assessment (2017)
Journal Article
Van Loon. (2017). The ESO Diffuse Interstellar Bands Large Exploration Survey (EDIBLES) - I. Project description, survey sample, and quality assessment. Astronomy & Astrophysics, A76 -A76. https://doi.org/10.1051/0004-6361/201730912

The carriers of the diffuse interstellar bands (DIBs) are largely unidentified molecules ubiquitously present in the interstellar medium (ISM). After decades of study, two strong and possibly three weak near-infrared DIBs have recently been attribute... Read More about The ESO Diffuse Interstellar Bands Large Exploration Survey (EDIBLES) - I. Project description, survey sample, and quality assessment.

Periodic eclipses of the young star PDS 110 discovered with WASP and KELT photometry (2017)
Journal Article
Hellier. (2017). Periodic eclipses of the young star PDS 110 discovered with WASP and KELT photometry. Monthly Notices of the Royal Astronomical Society, 740 -749. https://doi.org/10.1093/mnras/stx1249

We report the discovery of eclipses by circumstellar disc material associated with the young star PDS 110 in the Ori OB1a association using the SuperWASP and Kilodegree Extremely Little Telescope surveys. PDS 110 (HD 290380, IRAS 05209-0107) is a rar... Read More about Periodic eclipses of the young star PDS 110 discovered with WASP and KELT photometry.

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.

The Gaia-ESO Survey and CSI 2264: Substructures, disks, and sequential star formation in the young open cluster NGC 2264 (2017)
Journal Article
Jeffries. (2017). The Gaia-ESO Survey and CSI 2264: Substructures, disks, and sequential star formation in the young open cluster NGC 2264. Astronomy & Astrophysics, https://doi.org/10.1051/0004-6361/201731103

Context. Reconstructing the structure and history of young clusters is pivotal to understanding the mechanisms and timescales of early stellar evolution and planet formation. Recent studies suggest that star clusters often exhibit a hierarchical stru... Read More about The Gaia-ESO Survey and CSI 2264: Substructures, disks, and sequential star formation in the young open cluster NGC 2264.

Pre-supernova mixing in CEMP-no source stars (2017)
Journal Article
Choplin, A., Ekström, S., Meynet, G., Maeder, A., Georgy, C., & Hirschi, R. (2017). Pre-supernova mixing in CEMP-no source stars. Astronomy & Astrophysics, 605, A63 -A63. https://doi.org/10.1051/0004-6361/201630182

Context. CEMP-no stars are long-lived low-mass stars with a very low iron content, overabundances of carbon and no or minor signs for the presence of s- or r-elements. Although their origin is still a matter of debate, they are often considered as be... Read More about Pre-supernova mixing in CEMP-no source stars.

Searching for new young stars in the northern hemisphere: The Pisces Moving Group (2017)
Journal Article
Binks, A., Jeffries, R., & Ward, J. (2018). Searching for new young stars in the northern hemisphere: The Pisces Moving Group. Monthly Notices of the Royal Astronomical Society, 473(2), 2465-2485. https://doi.org/10.1093/mnras/stx2252

Using the kinematically unbiased technique described in Binks, Jeffries & Maxted (2015), we present optical spectra for a further 122 rapidly-rotating (rotation periods <6 days), X-ray active FGK stars, selected from the SuperWASP survey. We identify...

Pair-instability Supernova Simulations: Progenitor Evolution, Explosion, and Light Curves (2017)
Journal Article
Hirschi, R. (2017). Pair-instability Supernova Simulations: Progenitor Evolution, Explosion, and Light Curves. Astrophysical Journal, 100 - 100. https://doi.org/10.3847/1538-4357/aa8461

In recent years, the viability of the pair-instability supernova (PISN) scenario for explaining superluminous supernovae has all but disappeared except for a few slowly-evolving examples. However, PISNe are not predicted to be superluminous throughou... Read More about Pair-instability Supernova Simulations: Progenitor Evolution, Explosion, and Light Curves.