Skip to main content

Research Repository

Advanced Search

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.

The final fate of stars that ignite neon and oxygen off-center: electron capture or iron core-collapse supernova? (2014)
Journal Article
Jones, S., Hirschi, R., & Nomoto, K. (2014). The final fate of stars that ignite neon and oxygen off-center: electron capture or iron core-collapse supernova?. Astrophysical Journal, 797(2), 83. https://doi.org/10.1088/0004-637X/797/2/83

In the ONeMg cores of $8.8-9.5~{\rm M}_\odot$ stars, neon and oxygen burning is ignited off-center. Whether the neon-oxygen flame propagates to the center is critical to determine whether these stars undergo Fe core collapse or electron capture induc... Read More about The final fate of stars that ignite neon and oxygen off-center: electron capture or iron core-collapse supernova?.

WASP-94 A and B planets: hot-Jupiter cousins in a twin-star system (2014)
Journal Article
Neveu-VanMalle, M., Queloz, D., Anderson, D., Charbonnel, C., Collier Cameron, A., Delrez, L., Gillon, M., Hellier, C., Jehin, E., Lendl, M., Maxted, P., Pepe, F., Pollacco, D., Ségransan, D., Smalley, B., Smith, A., Southworth, J., Triaud, A., Udry, S., & West, R. (2014). WASP-94 A and B planets: hot-Jupiter cousins in a twin-star system. Astronomy & Astrophysics, https://doi.org/10.1051/0004-6361/201424744

We report the discovery of two hot-Jupiter planets, each orbiting one of the stars of a wide binary system. WASP-94A (2MASS 20550794–3408079) is an F8 type star hosting a transiting planet with a radius of 1.72 ± 0.06 RJup, a mass of 0.452 ± 0.034 MJ... Read More about WASP-94 A and B planets: hot-Jupiter cousins in a twin-star system.

Room Temperature Electroluminescence from Mechanically Formed van der Waals III-VI Homojunctions and Heterojunctions (2014)
Journal Article
Balakrishnan, N., Kudrynskyi, Z., Fay, M., Mudd, G., Svatek, S., Makarovsky, O., Kovalyuk, Z., Eaves, L., Beton, P., & Patanè, A. (2014). Room Temperature Electroluminescence from Mechanically Formed van der Waals III-VI Homojunctions and Heterojunctions. Advanced optical materials, 1064 - 1069. https://doi.org/10.1002/adom.201400202

Room temperature electroluminescence from semiconductor junctions is demonstrated. The junctions are fabricated by the exfoliation and direct mechanical adhesion of InSe and GaSe van der Waals layered crystals. Homojunction diodes formed from layers... Read More about Room Temperature Electroluminescence from Mechanically Formed van der Waals III-VI Homojunctions and Heterojunctions.

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.

Pair-instability supernovae in the local universe (2014)
Journal Article
Whalen, D. J., Smidt, J., Heger, A., Hirschi, R., Yusof, N., Even, W., Fryer, C. L., Stiavelli, M., Chen, K.-J., & Joggerst, C. C. (2014). Pair-instability supernovae in the local universe. Astrophysical Journal, 797(1), Article 9. https://doi.org/10.1088/0004-637X/797/1/9

The discovery of 150-300 M ? stars in the Local Group and pair-instability supernova candidates at low redshifts has excited interest in this exotic explosion mechanism. Realistic light curves for pair-instability supernovae at near-solar metalliciti... Read More about Pair-instability supernovae in the local universe.

Optoelectronic properties ofTa3N5: A joint theoretical and experimental study (2014)
Journal Article
Morbec, J. M., Narkeviciute, I., Jaramillo, T. F., & Galli, G. (2014). Optoelectronic properties ofTa3N5: A joint theoretical and experimental study. Physical review B: Condensed matter and materials physics, https://doi.org/10.1103/PhysRevB.90.155204

A joint theoretical and experimental study of the optoelectronic properties of Ta3N5 was conducted by means of ab initio calculations and ellipsometry measurements. Previous experimental work on Ta3N5 has not been conclusive regarding the direct or i... Read More about Optoelectronic properties ofTa3N5: A joint theoretical and experimental study.

WASP-104b and WASP-106b: two transiting hot Jupiters in 1.75-day and 9.3-day orbits (2014)
Journal Article
Smalley, & Maxted. (2014). WASP-104b and WASP-106b: two transiting hot Jupiters in 1.75-day and 9.3-day orbits. Astronomy & Astrophysics, https://doi.org/10.1051/0004-6361/201424752

We have used the WASP survey to discover two exoplanetary systems, each consisting of a Jupiter-sized planet transiting an 11th-magnitude (V) main-sequence star. WASP-104b orbits its star in 1.75 d, whereas WASP-106b has the fourth-longest orbital pe... Read More about WASP-104b and WASP-106b: two transiting hot Jupiters in 1.75-day and 9.3-day orbits.

Variable emission from a gaseous disc around a metal-polluted white dwarf (2014)
Journal Article
Wilson, D., Gänsicke, B., Koester, D., Raddi, R., Breedt, E., Southworth, J., & Parsons, S. (2014). Variable emission from a gaseous disc around a metal-polluted white dwarf. Monthly Notices of the Royal Astronomical Society, 445(2), 1878 -1884. https://doi.org/10.1093/mnras/stu1876

We present the discovery of strongly variable emission lines from a gaseous disc around the DA white dwarf SDSS J1617+1620, a star previously found to have an infrared excess indicative of a dusty debris disc formed by the tidal disruption of a rocky... Read More about Variable emission from a gaseous disc around a metal-polluted white dwarf.

The s-process enrichment of the globular clusters M4 and M22 (2014)
Journal Article
Hirschi. (2014). The s-process enrichment of the globular clusters M4 and M22. Astrophysical Journal, https://doi.org/10.1088/0004-637X/795/1/34

We investigate the enrichment in elements produced by the slow neutron-capture process (s-process) in the globular clusters M4 (NGC 6121) and M22 (NGC 6656). Stars in M4 have homogeneous abundances of Fe and neutron-capture elements, but the entire c... Read More about The s-process enrichment of the globular clusters M4 and M22.

KIC 10526294: a slowly rotating B star with rotationally split, quasi-equally spaced gravity modes (2014)
Journal Article
Pápics, P., Moravveji, E., Aerts, C., Tkachenko, A., Triana, S., Bloemen, S., & Southworth, J. (2014). KIC 10526294: a slowly rotating B star with rotationally split, quasi-equally spaced gravity modes. Astronomy & Astrophysics, 570, Article A8. https://doi.org/10.1051/0004-6361/201424094

Context. Massive stars are important for the chemical enrichment of the universe. Since internal mixing processes influence their lives, it is very important to place constraints on the corresponding physical parameters, such as core overshooting and... Read More about KIC 10526294: a slowly rotating B star with rotationally split, quasi-equally spaced gravity modes.

A 3D extinction map of the northern Galactic plane based on IPHAS photometry (2014)
Journal Article
Sale, S., Drew, J., Barentsen, G., Farnhill, H., Raddi, R., Barlow, M., Eislöffel, J., Vink, J., Rodríguez-Gil, P., & Wright, N. (2014). A 3D extinction map of the northern Galactic plane based on IPHAS photometry. Monthly Notices of the Royal Astronomical Society, 2907-2922. https://doi.org/10.1093/mnras/stu1090

We present a 3D map of extinction in the northern Galactic plane derived using photometry from the INT/WFC Photometric Ha Survey of the northern Galactic plane. The map has fine angular (~10 arcmin) and distance (100 pc) sampling allied to a signific... Read More about A 3D extinction map of the northern Galactic plane based on IPHAS photometry.

The edge wave on an elastically supported Kirchhoff plate (2014)
Journal Article
Kaplunov, J., Prikazchikov, D. A., Rogerson, G. A., & Lashab, M. I. (2014). The edge wave on an elastically supported Kirchhoff plate. Journal of the Acoustical Society of America, 136(4), 1487 - 1490. https://doi.org/10.1121/1.4894795

This Letter deals with an analysis of bending edge waves propagating along the free edge of a Kirchhoff plate supported by a Winkler foundation. The presence of a foundation leads to a non-zero cut-off frequency for this wave, along with a local mini... Read More about The edge wave on an elastically supported Kirchhoff plate.

The VMC Survey XII. Star cluster candidates in the Large Magellanic Cloud (2014)
Journal Article
Oliveira, J. (2014). The VMC Survey XII. Star cluster candidates in the Large Magellanic Cloud. Astronomy & Astrophysics, https://doi.org/10.1051/0004-6361/201424175

Context. In this work we analyse colour-magnitude diagrams (CMDs) of catalogued star clusters located in the Large Magellanic Cloud (LMC), from a YJKs photometric data set obtained by the Visible and Infrared Survey Telescope for Astronomy (VISTA) su... Read More about The VMC Survey XII. Star cluster candidates in the Large Magellanic Cloud.

The Gaia-ESO Survey: The analysis of high-resolution UVES spectra of FGK-type stars (2014)
Journal Article
Smiljanic, R., Korn, A., Bergemann, M., Frasca, A., Magrini, L., Masseron, T., Pancino, E., Ruchti, G., San Roman, I., Sbordone, L., Sousa, S., Tabernero, H., Tautvaišienė, G., Valentini, M., Weber, M., Worley, C., Zh. Adibekyan, V., Allende Prieto, C., Barisevičius, G., Biazzo, K., …Zaggia, S. (2014). The Gaia-ESO Survey: The analysis of high-resolution UVES spectra of FGK-type stars. Astronomy and Astrophysics, 570, Article A122. https://doi.org/10.1051/0004-6361/201423937

Context. The ongoing Gaia-ESO Public Spectroscopic Survey is using FLAMES at the VLT to obtain high-quality medium-resolution Giraffe spectra for about 105 stars and high-resolution UVES spectra for about 5000 stars. With UVES, the Survey has already... Read More about The Gaia-ESO Survey: The analysis of high-resolution UVES spectra of FGK-type stars.

Observational Studies of Transiting Extrasolar Planets (2014)
Presentation / Conference Contribution
Southworth, J. Observational Studies of Transiting Extrasolar Planets. Presented at Living Together: Planets, Host Stars and Binaries

The study of transiting extrasolar planets is only 15 years old, but has matured into a rich area of research. I review the observational aspects of this work, concentrating on the discovery of transits, the characterization of planets from photometr... Read More about Observational Studies of Transiting Extrasolar Planets.

High-precision photometry by telescope defocussing - VI. WASP-24, WASP-25 and WASP-26 (2014)
Journal Article
Southworth, J., Hinse, T., Burgdorf, M., Calchi Novati, S., Dominik, M., Galianni, P., Gerner, T., Giannini, E., Gu, S.-H., Hundertmark, M., Jørgensen, U., Juncher, D., Kerins, E., Mancini, L., Rabus, M., Ricci, D., Schäfer, S., Skottfelt, J., Tregloan-Reed, J., Wang, X.-B., …Vilela, C. (2014). High-precision photometry by telescope defocussing - VI. WASP-24, WASP-25 and WASP-26. Monthly Notices of the Royal Astronomical Society, 444(1), 776 -789. https://doi.org/10.1093/mnras/stu1492

We present time series photometric observations of 13 transits in the planetary systems WASP-24, WASP-25 and WASP-26. All three systems have orbital obliquity measurements, WASP-24 and WASP-26 have been observed with Spitzer, and WASP-25 was previous... Read More about High-precision photometry by telescope defocussing - VI. WASP-24, WASP-25 and WASP-26.

Colour-magnitude diagrams of transiting Exoplanets - II. A larger sample from photometric distances (2014)
Journal Article
Triaud, A. H., Lanotte, A. A., Smalley, B., & Gillon, M. (2014). Colour-magnitude diagrams of transiting Exoplanets - II. A larger sample from photometric distances. Monthly Notices of the Royal Astronomical Society, 444(1), 711 -728. https://doi.org/10.1093/mnras/stu1416

Colour–magnitude diagrams form a traditional way of presenting luminous objects in the Universe and compare them to each other. Here, we estimate the photometric distance of 44 transiting exoplanetary systems. Parallaxes for seven systems confirm our... Read More about Colour-magnitude diagrams of transiting Exoplanets - II. A larger sample from photometric distances.