All Outputs (74)

Origin of the metallicity distribution in the thick disc (2016)
Journal Article
Miranda, M. S., Pilkington, K., Gibson, B. K., Brook, C. B., Sánchez-Blázquez, P., Minchev, I., Few, C. G., Smith, R., Domínguez-Tenreiro, R., Obreja, A., Bailin, J., & Stinson, G. S. (2016). Origin of the metallicity distribution in the thick disc. Astronomy and Astrophysics, 587, Article A10. https://doi.org/10.1051/0004-6361/201525789

Using a suite of cosmological chemodynamical disc galaxy simulations, we assess how (a) radial metallicity gradients evolve with scaleheight; (b) the vertical metallicity gradients change through the thick disc; and (c) the vertical gradient of the s... Read More about Origin of the metallicity distribution in the thick disc.

Shocking features in the merging galaxy cluster RXJ0334.2-0111 (2016)
Journal Article
Dasadia, S., Sun, M., Morandi, A., Sarazin, C., Clarke, T., Nulsen, P., Massaro, F., Roediger, E., Harris, D., & Forman, B. (2016). Shocking features in the merging galaxy cluster RXJ0334.2-0111. Monthly notices of the Royal Astronomical Society, 458(1), 681-694. https://doi.org/10.1093/mnras/stw291

© 2016 The Authors. We present a 66 ks Chandra X-ray observation of the galaxy cluster RXJ0334.2-0111. This deep observation revealed a unique bow shock system associated with a wide angle tail (WAT) radio galaxy and several intriguing substructures.... Read More about Shocking features in the merging galaxy cluster RXJ0334.2-0111.

Identification of Globular Cluster Stars in RAVE data II: Extended tidal debris around NGC 3201 (2016)
Journal Article
Anguiano, B., De Silva, G. M., Freeman, K., Da Costa, G. S., Zwitter, T., Quillen, A. C., Zucker, D. B., Navarro, J. F., Kunder, A., Siebert, A., Wyse, R. F. G., Grebel, E. K., Kordopatis, G., Gibson, B. K., Seabroke, G., Sharma, S., Wojno, J., Bland-Hawthorn, J., Parker, Q. A., Steinmetz, M., …Watson, F. (2016). Identification of Globular Cluster Stars in RAVE data II: Extended tidal debris around NGC 3201. Monthly notices of the Royal Astronomical Society, 457(2), 2078-2085. https://doi.org/10.1093/mnras/stw083

We report the identification of extended tidal debris potentially associated with the globular cluster NGC 3201, using the RAdial Velocity Experiment (RAVE) catalogue. We find the debris stars are located at a distance range of 1–7 kpc based on the f... Read More about Identification of Globular Cluster Stars in RAVE data II: Extended tidal debris around NGC 3201.

Vibrational anharmonicity of small gold and silver clusters using the VSCF method (2016)
Journal Article
Mancera, L. A., & Benoit, D. M. (2016). Vibrational anharmonicity of small gold and silver clusters using the VSCF method. Physical chemistry chemical physics : PCCP, 18(1), 529-549. https://doi.org/10.1039/c5cp05283a

We study the vibrational spectra of small neutral gold (Au2–Au10) and silver (Ag2–Au5) clusters using the vibrational self-consistent field method (VSCF) in order to account for anharmonicity. We report harmonic, VSCF, and correlation-corrected VSCF... Read More about Vibrational anharmonicity of small gold and silver clusters using the VSCF method.

The imprint of satellite accretion on the chemical and dynamical properties of disc galaxies (2016)
Journal Article
Ruiz-Lara, T., Few, C. G., Gibson, B. K., Pérez, I., Florido, E., Minchev, I., & Sánchez-Blázquez, P. (2016). The imprint of satellite accretion on the chemical and dynamical properties of disc galaxies. Astronomy and Astrophysics, 586, A112. https://doi.org/10.1051/0004-6361/201526470

Aims. We study the effects of the cosmological assembly history on the chemical and dynamical properties of the discs of spiral galaxies as a function of radius. Methods. We made use of the simulated Milky Way mass, fully-cosmological discs from Rams... Read More about The imprint of satellite accretion on the chemical and dynamical properties of disc galaxies.

Thermally induced magnetization switching in Gd/Fe multilayers (2016)
Journal Article
Xu, C., Ostler, T. A., & Chantrell, R. W. (2016). Thermally induced magnetization switching in Gd/Fe multilayers. Physical Review B, 93(5), Article 054302. https://doi.org/10.1103/PhysRevB.93.054302

A theoretical model of Gd/Fe multilayers is constructed using the atomistic spin dynamics formalism. By varying the thicknesses and number of layers we have shown that a strong dependence of the energy required for thermally induced magnetization swi... Read More about Thermally induced magnetization switching in Gd/Fe multilayers.

The discovery of lensed radio and x-ray sources behind the frontier fields cluster MACS J0717.5+3745 with the JVLA and Chandra (2016)
Journal Article
van Weeren, R. J., Ogrean, G. A., Jones, C., Forman, W. R., Andrade-Santos, F., Bonafede, A., Brüggen, M., Bulbul, E., Clarke, T. E., Churazov, E., David, L., Dawson, W. A., Donahue, M., Goulding, A., Kraft, R. P., Mason, B., Merten, J., Mroczkowski, T., Murray, S. S., Nulsen, P. E. J., …Zitrin, A. (2016). The discovery of lensed radio and x-ray sources behind the frontier fields cluster MACS J0717.5+3745 with the JVLA and Chandra. The Astrophysical journal, 817(2), Article ARTN 98. https://doi.org/10.3847/0004-637x/817/2/98

© 2016. The American Astronomical Society. All rights reserved.. We report on high-resolution JVLA and Chandra observations of the Hubble Space Telescope (HST) Frontier Cluster MACS J0717.5+3745. MACS J0717.5+3745 offers the largest contiguous magnif... Read More about The discovery of lensed radio and x-ray sources behind the frontier fields cluster MACS J0717.5+3745 with the JVLA and Chandra.

Iron-group abundances in the metal-poor main-sequence turnoff star HD 84937 (2016)
Journal Article
Sneden, C., Cowan, J. J., Kobayashi, C., Pignatari, M., Lawler, J. E., Den Hartog, E. A., & Wood, M. P. (2016). Iron-group abundances in the metal-poor main-sequence turnoff star HD 84937. The Astrophysical journal, 817(1), 53. https://doi.org/10.3847/0004-637x/817/1/53

We have derived new, very accurate abundances of the Fe-group elements Sc through Zn (Z = 21−30) in the bright main-sequence turnoff star HD 84937 based on high-resolution spectra covering the visible and ultraviolet spectral regions. New or recent l... Read More about Iron-group abundances in the metal-poor main-sequence turnoff star HD 84937.

Phonon emission and arrival times of electrons from a single-electron source (2016)
Journal Article
Emary, C., Dyson, A., Ryu, S., Sim, H.-S., & Kataoka, M. (2016). Phonon emission and arrival times of electrons from a single-electron source. Physical Review B, 93(3), Article ARTN 035436. https://doi.org/10.1103/PhysRevB.93.035436

In recent charge-pump experiments, single electrons are injected into quantum Hall edge channels at energies significantly above the Fermi level. We consider here the relaxation of these hot edge-channel electrons through longitudinal-optical-phonon... Read More about Phonon emission and arrival times of electrons from a single-electron source.

Weighing the galactic disc using the Jeans equation: lessons from simulations (2016)
Journal Article
Candlish, G. N., Smith, R., Moni Bidin, C., & Gibson, B. K. (2016). Weighing the galactic disc using the Jeans equation: lessons from simulations. Monthly notices of the Royal Astronomical Society, 456(4), 3456-3474. https://doi.org/10.1093/mnras/stv2792

Using three-dimensional stellar kinematic data from simulated galaxies, we examine the efficacy of a Jeans equation analysis in reconstructing the total disk surface density, including the dark matter, at the ‘Solar’ radius. Our simulation data set i... Read More about Weighing the galactic disc using the Jeans equation: lessons from simulations.

Origin of the p-process radionuclides ⁹²Nb and ¹⁴⁶Sm in the early solar system and inferences on the birth of the Sun (2016)
Journal Article
Lugaro, M., Pignatari, M., Ott, U., Zuber, K., Travaglio, C., Gyürky, G., & Fülöp, Z. (2016). Origin of the p-process radionuclides ⁹²Nb and ¹⁴⁶Sm in the early solar system and inferences on the birth of the Sun. Proceedings of the National Academy of Sciences of the United States of America, 113(4), 907-912. https://doi.org/10.1073/pnas.1519344113

The abundances of ⁹²Nb and ¹⁴⁶Sm in the early solar system are determined from meteoritic analysis, and their stellar production is attributed to the p process. We investigate if their origin from thermonuclear supernovae deriving from the explosion... Read More about Origin of the p-process radionuclides ⁹²Nb and ¹⁴⁶Sm in the early solar system and inferences on the birth of the Sun.

The history of stellar metallicity in a simulated disc galaxy (2016)
Journal Article
Snaith, O. N., Bailin, J., Gibson, B. K., Bell, E. F., Stinson, G., Valluri, M., Wadsley, J., & Couchman, H. (2016). The history of stellar metallicity in a simulated disc galaxy. Monthly notices of the Royal Astronomical Society, 456(3), 3119-3141. https://doi.org/10.1093/mnras/stv2788

We explore the chemical distribution of stars in a simulated galaxy. Using simulations of the same initial conditions but with two different feedback schemes (McMaster Unbiased Galaxy Simulations – MUGS – and Making Galaxies in a Cosmological Context... Read More about The history of stellar metallicity in a simulated disc galaxy.

Experiments with neutron beams for the astrophysical s process (2016)
Journal Article
Lederer, C., Altstadt, S., Andrzejewski, J., Audouin, L., Barbagallo, M., Bécares, V., Bečvář, F., Belloni, F., Berthoumieux, E., Billowes, J., Boccone, V., Bosnar, D., Brugger, M., Calviani, M., Calviño, F., Cano-Ott, D., Carrapiço, C., Cerutti, F., Chiaveri, E., Chin, M., …Žugec, P. (2016). Experiments with neutron beams for the astrophysical s process. Journal of Physics: Conference Series, 665(1), 012020. https://doi.org/10.1088/1742-6596/665/1/012020

© Published under licence by IOP Publishing Ltd. Neutron capture cross sections are the key nuclear physics input to study the slow neutron capture process, which is responsible for forming about half of the elemental abundances above Fe. Stellar neu... Read More about Experiments with neutron beams for the astrophysical s process.

Sensitivity study for s process nucleosynthesis in AGB stars (2016)
Journal Article
Koloczek, A., Thomas, B., Glorius, J., Plag, R., Pignatari, M., Reifarth, R., Ritter, C., Schmidt, S., & Sonnabend, K. (2016). Sensitivity study for s process nucleosynthesis in AGB stars. Atomic Data and Nuclear Data Tables, 108(March), 1-14. https://doi.org/10.1016/j.adt.2015.12.001

In this paper we present a large-scale sensitivity study of reaction rates in the main component of the s process. The aim of this study is to identify all rates, which have a global effect on the s process abundance distribution and the three most i... Read More about Sensitivity study for s process nucleosynthesis in AGB stars.