All Outputs (760)

The radial velocity experiment (RAVE): Fourth data release (2013)
Journal Article
Kordopatis, G., Gilmore, G., Steinmetz, M., Boeche, C., Seabroke, G. M., Siebert, A., Zwitter, T., Binney, J., De Laverny, P., Recio-Blanco, A., Williams, M. E. K., Piffl, T., Enke, H., Roeser, S., Bijaoui, A., Wyse, R. F. G., Freeman, K., Munari, U., Carrillo, I., Anguiano, B., …Žerjal, M. (2013). The radial velocity experiment (RAVE): Fourth data release. Astronomical Journal, 146(5), 134. https://doi.org/10.1088/0004-6256/146/5/134

We present the stellar atmospheric parameters (effective temperature, surface gravity, overall metallicity), radial velocities, individual abundances, and distances determined for 425,561 stars, which constitute the fourth public data release of the... Read More about The radial velocity experiment (RAVE): Fourth data release.

In the thick of it: metal-poor disc stars in RAVE (2013)
Journal Article
Kordopatis, G., Gilmore, G., Wyse, R., Steinmetz, M., Siebert, A., Bienaymé, O., McMillan, P. J., Minchev, I., Zwitter, T., Gibson, B. K., Seabroke, G., Grebel, E. K., Bland-Hawthorn, J., Boeche, C., Freeman, K. C., Munari, U., Navarro, J. F., Parker, Q., Reid, W. A., & Siviero, A. (2013). In the thick of it: metal-poor disc stars in RAVE. Monthly notices of the Royal Astronomical Society, 436(4), 3231-3246. https://doi.org/10.1093/mnras/stt1804

By selecting in the Radial Velocity Experiment-fourth data release (RAVE-DR4) survey the stars located between 1 and 2 kpc above the Galactic plane, we question the consistency of the simplest three-component model (thin disc, thick disc and halo) fo... Read More about In the thick of it: metal-poor disc stars in RAVE.

Evidence for radiogenic sulfur-32 in type Ab presolar silicon carbide grains? (2013)
Journal Article
Fujiya, W., Hoppe, P., Zinner, E., Pignatari, M., & Herwig, F. (2013). Evidence for radiogenic sulfur-32 in type Ab presolar silicon carbide grains?. Astrophysical journal. Letters, 776(2), L29. https://doi.org/10.1088/2041-8205/776/2/l29

We report C, Si, and S isotope measurements on 34 presolar silicon carbide grains of Type AB, characterized by 12 C/ 13 C < 10. Nitrogen, Mg-Al-, and Ca-Ti-isotopic compositions were measured on a subset of these grains. Three grains show large 3... Read More about Evidence for radiogenic sulfur-32 in type Ab presolar silicon carbide grains?.

Viscous Kelvin-Helmholtz instabilities in highly ionised plasmas (2013)
Journal Article
Roediger, E., Kraft, R. P., Nulsen, P., Churazov, E., Forman, W., Brüggen, M., & Kokotanekova, R. (2013). Viscous Kelvin-Helmholtz instabilities in highly ionised plasmas. Monthly notices of the Royal Astronomical Society, 436(2), 1721-1740. https://doi.org/10.1093/mnras/stt1691

Transport coefficients in highly ionised plasmas like the intra-cluster medium (ICM) are still ill-constrained. They influence various processes, among them the mixing at shear flow interfaces due to the Kelvin-Helmholtz instability (KHI). The observ... Read More about Viscous Kelvin-Helmholtz instabilities in highly ionised plasmas.

Solution-processed bilayer photovoltaic devices with nematic liquid crystals (2013)
Journal Article
AlKhalifah, M. S., Lei, C., Myers, S. A., O’Neill, M., Kitney, S. P., & Kelly, S. M. (2014). Solution-processed bilayer photovoltaic devices with nematic liquid crystals. Liquid crystals, 41(3), 402-417. https://doi.org/10.1080/02678292.2013.834082

The cross-linking of polymerisable liquid crystalline semiconductors is a promising approach to solution-processable, multilayer, organic photovoltaics. Here we demonstrate an organic bilayer photovoltaic with an insoluble electron-donating layer for... Read More about Solution-processed bilayer photovoltaic devices with nematic liquid crystals.

Galactic constraints on supernova progenitor models (2013)
Journal Article
Acharova, I. A., Gibson, B. K., Mishurov, Y. N., & Kovtyukh, V. V. (2013). Galactic constraints on supernova progenitor models. Astronomy and Astrophysics, 557, A107. https://doi.org/10.1051/0004-6361/201220944

Aims. To estimate the mean masses of oxygen and iron ejected per each type of supernovae (SNe) event from observations of the elemental abundance patterns in the Galactic disk and constrain the relevant SNe progenitor models. Methods. We undertake a... Read More about Galactic constraints on supernova progenitor models.

Galaxy And Mass Assembly: resolving the role of environment in galaxy evolution (2013)
Journal Article
Brough, S., Croom, S., Sharp, R., Hopkins, A. M., Taylor, E. N., Baldry, I. K., Gunawardhana, M. L. P., Liske, J., Norberg, P., Robotham, A. S. G., Bauer, A. E., Bland-Hawthorn, J., Colless, M., Foster, C., Kelvin, L. S., Lara-Lopez, M. A., López-Sánchez, Á. R., Loveday, J., Owers, M., Pimbblet, K. A., & Prescott, M. (2013). Galaxy And Mass Assembly: resolving the role of environment in galaxy evolution. Monthly notices of the Royal Astronomical Society, 435(4), 2903-2917. https://doi.org/10.1093/mnras/stt1489

We present observations of 18 galaxies from the Galaxy And Mass Assembly (GAMA) survey made with the SPIRAL optical integral field unit (IFU) on the Anglo-Australian Telescope. The galaxies are selected to have a narrow range in stellar mass (6 × 10... Read More about Galaxy And Mass Assembly: resolving the role of environment in galaxy evolution.

Galaxy and mass assembly (GAMA): Witnessing the assembly of the cluster Abell 1882 (2013)
Journal Article
Owers, M. S., Baldry, I. K., Bauer, A. E., Bland-Hawthorn, J., Brown, M. J. I., Cluver, M. E., Colless, M., Driver, S. P., Edge, A. C., Hopkins, A. M., Van Kampen, E., Lara-Lopez, M. A., Liske, J., Loveday, J., Pimbblet, K. A., Ponman, T., & Robotham, A. S. G. (2013). Galaxy and mass assembly (GAMA): Witnessing the assembly of the cluster Abell 1882. The Astrophysical journal, 772(2), 104. https://doi.org/10.1088/0004-637x/772/2/104

We present a combined optical and X-ray analysis of the rich cluster ABELL 1882 (A1882) with the aim of identifying merging substructure and understanding the recent assembly history of this system. Our optical data consist of spectra drawn from the... Read More about Galaxy and mass assembly (GAMA): Witnessing the assembly of the cluster Abell 1882.

The WiggleZ Dark Energy Survey: star formation in UV-luminous galaxies from their luminosity functions (2013)
Journal Article
Jurek, R. J., Drinkwater, M. J., Pimbblet, K., Glazebrook, K., Blake, C., Brough, S., Colless, M., Contreras, C., Couch, W., Croom, S., Croton, D., Davis, T. M., Forster, K., Gilbank, D., Gladders, M., Jelliffe, B., Li, I.-H., Madore, B., Martin, D. C., Poole, G. B., …Yee, H. K. C. (2013). The WiggleZ Dark Energy Survey: star formation in UV-luminous galaxies from their luminosity functions. Monthly notices of the Royal Astronomical Society, 434(1), 257-281. https://doi.org/10.1093/mnras/stt1015

We present the ultraviolet (UV) luminosity function of galaxies from the GALEX Medium Imaging Survey with measured spectroscopic redshifts from the first data release of the WiggleZ Dark Energy Survey. Our sample consists of 39 996 NUV < 22.8 emiss... Read More about The WiggleZ Dark Energy Survey: star formation in UV-luminous galaxies from their luminosity functions.

Reproducing the observed abundances in RCB and HdC stars with post-double-degenerate merger models - Constraints on merger and post-merger simulations and physics processes (2013)
Journal Article
Menon, A., Herwig, F., Denissenkov, P. A., Clayton, G. C., Staff, J., Pignatari, M., & Paxton, B. (2013). Reproducing the observed abundances in RCB and HdC stars with post-double-degenerate merger models - Constraints on merger and post-merger simulations and physics processes. The Astrophysical journal, 772(1), 59. https://doi.org/10.1088/0004-637x/772/1/59

The R Coronae Borealis (RCB) stars are hydrogen-deficient, variable stars that are most likely the result of He-CO WD mergers. They display extremely low oxygen isotopic ratios, 16 O/ 18 O ≃ 1-10, 12 C/ 13 C ≥ 100, and enhancements up to 2.6 dex in... Read More about Reproducing the observed abundances in RCB and HdC stars with post-double-degenerate merger models - Constraints on merger and post-merger simulations and physics processes.

Galaxy And Mass Assembly (GAMA): Linking star formation histories and stellar mass growth (2013)
Journal Article
Bauer, A. E., Hopkins, A. M., Gunawardhana, M., Taylor, E. N., Baldry, I., Bamford, S. P., Bland-Hawthorn, J., Brough, S., Brown, M. J. I., Cluver, M. E., Colless, M., Conselice, C. J., Croom, S., Driver, S., Foster, C., Jones, D. H., Lara-Lopez, M. A., Liske, J., López-Sánchez, Á. R., Loveday, J., …Sharp, R. (2013). Galaxy And Mass Assembly (GAMA): Linking star formation histories and stellar mass growth. Monthly notices of the Royal Astronomical Society, 434(1), 209-221. https://doi.org/10.1093/mnras/stt1011

WWe present evidence for stochastic star formation histories in low-mass (M * < 10 10 M ⊙ ) galaxies from observations within the Galaxy And Mass Assembly (GAMA) survey. For ̃73 000 galaxies between 0.05 < z < 0.32, we calculate star formation ra... Read More about Galaxy And Mass Assembly (GAMA): Linking star formation histories and stellar mass growth.

Silicon carbide grains of type C provide evidence for the production of the unstable isotope ³²Si in supernovae (2013)
Journal Article
Pignatari, M., Zinner, E., G. Bertolli, M., Trappitsch, R., Hoppe, P., Rauscher, T., Fryer, C., Herwig, F., Hirschi, R., Timmes, F., & Thielemann, F.-K. (2013). Silicon carbide grains of type C provide evidence for the production of the unstable isotope ³²Si in supernovae. Astrophysical journal. Letters, 771(1), Article L7. https://doi.org/10.1088/2041-8205/771/1/L7

Carbon-rich grains are observed to condense in the ejecta of recent core-collapse supernovae (SNe) within a year after the explosion. Silicon carbide grains of type X are C-rich grains with isotopic signatures of explosive SN nucleosynthesis have bee... Read More about Silicon carbide grains of type C provide evidence for the production of the unstable isotope ³²Si in supernovae.

Can we detect local helioseismic parameter shifts in coronal holes? (2013)
Presentation / Conference Contribution
Howe, R., Haber, D. A., Bogart, R. S., Zharkov, S., Baker, D., Harra, L., & Driel-Gesztelyi, L. V. Can we detect local helioseismic parameter shifts in coronal holes?

Changes in helioseismic mode parameters in active regions and across the solar disk are well documented, but local magnetic activity and geometric effects may not account for all of the scatter seen in the results. We use results from theHelioseismic... Read More about Can we detect local helioseismic parameter shifts in coronal holes?.

The structure of the melamine–cyanuric acid co-crystal (2013)
Journal Article
Prior, T. J., Armstrong, J. A., Benoit, D. M., & Marshall, K. L. (2013). The structure of the melamine–cyanuric acid co-crystal. CrystEngComm RSC, 15(29), 5838-5843. https://doi.org/10.1039/c3ce40709h

The crystal structure of the melamine:cyanuric acid (CA.M) adduct has been redetermined and the previously reported cell is shown to be incorrect. The true unit cell has approximately twice the volume of the earlier cell. Crystal data forCA.M: monocl... Read More about The structure of the melamine–cyanuric acid co-crystal.

The influence of the nematic phase on the phase separation of blended organic semiconductors for photovoltaics (2013)
Journal Article
Myers, S. A., Al Kalifah, M. S., Lei, C., O'Neill, M., Kitney, S. P., & Kelly, S. M. (2013). The influence of the nematic phase on the phase separation of blended organic semiconductors for photovoltaics. Solar Energy Materials and Solar Cells, 116, 262-269. https://doi.org/10.1016/j.solmat.2013.05.006

Differential scanning calorimetry in combination with atomic force microscopy is used to examine the phase separation of a blended nematic liquid crystalline electron-donor and crystalline perylene electron-acceptor mixture. Separate domains of donor... Read More about The influence of the nematic phase on the phase separation of blended organic semiconductors for photovoltaics.

Constraining sub-grid physics with high-redshift spatially-resolved metallicity distributions (2013)
Journal Article
Gibson, B. K., Pilkington, K., Brook, C. B., Stinson, G. S., & Bailin, J. (2013). Constraining sub-grid physics with high-redshift spatially-resolved metallicity distributions. Astronomy and Astrophysics, 554, A47. https://doi.org/10.1051/0004-6361/201321239

Aims. We examine the role of energy feedback in shaping the distribution of metals within cosmological hydrodynamical simulations of L*disc galaxies. While negative abundance gradients today provide a boundary condition for galaxy evolution models, i... Read More about Constraining sub-grid physics with high-redshift spatially-resolved metallicity distributions.

Ultrafast dynamical path for the switching of a ferrimagnet after femtosecond heating (2013)
Journal Article
Atxitia, U., Ostler, T., Barker, J., Evans, R. F., Chantrell, R. W., & Chubykalo-Fesenko, O. (2013). Ultrafast dynamical path for the switching of a ferrimagnet after femtosecond heating. Physical review B: Condensed matter and materials physics, 87(22), https://doi.org/10.1103/PhysRevB.87.224417

Ultrafast laser-induced magnetic switching in rare earth-transition metal ferrimagnetic alloys has recently been reported to occur by ultrafast heating alone. Using atomistic simulations and a ferrimagnetic Landau-Lifshitz-Bloch formalism, we demonst... Read More about Ultrafast dynamical path for the switching of a ferrimagnet after femtosecond heating.

The WiggleZ Dark Energy Survey: constraining galaxy bias and cosmic growth with three-point correlation functions (2013)
Journal Article
Marín, F. A., Blake, C., Poole, G. B., McBride, C. K., Brough, S., Colless, M., Contreras, C., Couch, W., Croton, D. J., Croom, S., Davis, T., Drinkwater, M. J., Forster, K., Gilbank, D., Gladders, M., Glazebrook, K., Jelliffe, B., Jurek, R. J., Li, I.-H., Madore, B., …Yee, H. K. C. (2013). The WiggleZ Dark Energy Survey: constraining galaxy bias and cosmic growth with three-point correlation functions. Monthly notices of the Royal Astronomical Society, 432(4), 2654-2668. https://doi.org/10.1093/mnras/stt520

Higher order statistics are a useful and complementary tool for measuring the clustering of galaxies, containing information on the non-Gaussian evolution and morphology of large-scale structure in the Universe. In this work we present measurements o... Read More about The WiggleZ Dark Energy Survey: constraining galaxy bias and cosmic growth with three-point correlation functions.

On the internal pollution mechanisms in the globular cluster NGC 6121(M4): Heavy-element abundances and AGB models (2013)
Journal Article
D’Orazi, V., Campbell, S. W., Lugaro, M., Lattanzio, J. C., Pignatari, M., & Carretta, E. (2013). On the internal pollution mechanisms in the globular cluster NGC 6121(M4): Heavy-element abundances and AGB models. Monthly notices of the Royal Astronomical Society, 433(1), 366-381. https://doi.org/10.1093/mnras/stt728

Globular clusters display significant variations in their light-element content, pointing to the existence of a second stellar generation formed from the ejecta of an earlier generation. The nature of these internal polluters is still a matter of deb... Read More about On the internal pollution mechanisms in the globular cluster NGC 6121(M4): Heavy-element abundances and AGB models.

Measurement of the reaction 17O(α,n)20Ne and its impact on the s process in massive stars (2013)
Journal Article
Best, A., Beard, M., Görres, J., Couder, M., Deboer, R., Falahat, S., Güray, R. T., Kontos, A., Kratz, K.-L., Leblanc, P. J., Li, Q., O'Brien, S., Özkan, N., Pignatari, M., Sonnabend, K., Talwar, R., Tan, W., Uberseder, E., & Wiescher, M. (2013). Measurement of the reaction 17O(α,n)20Ne and its impact on the s process in massive stars. Physical Review C - Nuclear Physics, 87(4), Article 045805. https://doi.org/10.1103/physrevc.87.045805

Background: The ratio between the rates of the reactions 17O ( α , n ) 20Ne and 17O ( α , γ ) 21Ne determines whether 16O is an efficient neutron poison for the s process in massive stars, or if most of the neutrons captured by 16O(n,γ) are recycled... Read More about Measurement of the reaction 17O(α,n)20Ne and its impact on the s process in massive stars.