All Outputs (757)

The origin of the Milky Way's halo age distribution (2018)
Journal Article
Carollo, D., Tissera, P. B., Beers, T. C., Gudin, D., Gibson, B. K., Freeman, K. C., & Monachesi, A. (2018). The origin of the Milky Way's halo age distribution. Astrophysical journal. Letters, 859(1), L7. https://doi.org/10.3847/2041-8213/aac2dc

© 2018. The American Astronomical Society.. We present an analysis of the radial age gradients for the stellar halos of five Milky Way (MW) mass-sized systems simulated as part of the Aquarius Project. The halos show a diversity of age trends, reflec... Read More about The origin of the Milky Way's halo age distribution.

Coma Berenices: The First Evidence for Incomplete Vertical Phase-mixing in Local Velocity Space with RAVE—Confirmed with Gaia DR2 (2018)
Journal Article
Monari, G., Famaey, B., Minchev, I., Antoja, T., Bienaymé, O., Gibson, B. K., Grebel, E. K., Kordopatis, G., McMillan, P., Navarro, J., Parker, Q. A., Quillen, A. C., Reid, W., Seabroke, G., Siebert, A., Steinmetz, M., Wyse, R. F. G., & Zwitter, T. (2018). Coma Berenices: The First Evidence for Incomplete Vertical Phase-mixing in Local Velocity Space with RAVE—Confirmed with Gaia DR2. Research Notes of the AAS, 2(2), 32. https://doi.org/10.3847/2515-5172/aac38e

Evolution of N/O ratios in galaxies from cosmological hydrodynamical simulations (2018)
Journal Article
Vincenzo, F., & Kobayashi, C. (2018). Evolution of N/O ratios in galaxies from cosmological hydrodynamical simulations. Monthly notices of the Royal Astronomical Society, 478(1), 155–166. https://doi.org/10.1093/mnras/sty1047

We study the redshift evolution of the gas-phase O/H and N/O abundances, both (i) for individual ISM regions within single spatially-resolved galaxies and (ii) when dealing with average abundances in the whole ISM of many unresolved galaxies. We make... Read More about Evolution of N/O ratios in galaxies from cosmological hydrodynamical simulations.

Correlations between age, kinematics, and chemistry as seen by the RAVE survey (2018)
Journal Article
Wojno, J., Kordopatis, G., Steinmetz, M., McMillan, P., Binney, J., Famaey, B., Monari, G., Minchev, I., Wyse, R. F., Antoja, T., Siebert, A., Carrillo, I., Bland-Hawthorn, J., Grebel, E. K., Zwitter, T., Bienaymé, O., Gibson, B., Kunder, A., Munari, U., Navarro, J., …Seabroke, G. (2018). Correlations between age, kinematics, and chemistry as seen by the RAVE survey. Monthly notices of the Royal Astronomical Society, 477(4), 5612-5624. https://doi.org/10.1093/mnras/sty1016

We explore the connections between stellar age, chemistry, and kinematics across a Galactocentric distance of 7.5 < R(kpc) < 9.0, using a sample of ∼12 000 intermediate-mass (FGK) turn-off stars observed with the RAdial Velocity Experiment (RAVE) sur... Read More about Correlations between age, kinematics, and chemistry as seen by the RAVE survey.

Improved distances and ages for stars common to TGAS and RAVE (2018)
Journal Article
McMillan, P. J., Kordopatis, G., Kunder, A., Binney, J., Wojno, J., Zwitter, T., Steinmetz, M., Bland-Hawthorn, J., Gibson, B. K., Gilmore, G., Grebel, E. K., Helmi, A., Munari, U., Navarro, J. F., Parker, Q. A., Seabroke, G., Watson, F., & Wyse, R. F. (2018). Improved distances and ages for stars common to TGAS and RAVE. Monthly notices of the Royal Astronomical Society, 477(4), 5279-5300. https://doi.org/10.1093/MNRAS/STY990

We combine parallaxes from the first Gaia data release with the spectrophotometric distance estimation framework for stars in the fifth RAVE survey data release. The combined distance estimates are more accurate than either determination in isolation... Read More about Improved distances and ages for stars common to TGAS and RAVE.

Galaxy and mass assembly (GAMA): Impact of the group environment on galaxy star formation (2018)
Journal Article
Barsanti, S., Owers, M. S., Brough, S., Davies, L. J. M., Driver, S. P., Gunawardhana, M. L. P., Holwerda, B. W., Liske, J., Loveday, J., Pimbblet, K. A., Robotham, A. S. G., & Taylor, E. N. (2018). Galaxy and mass assembly (GAMA): Impact of the group environment on galaxy star formation. The Astrophysical journal, 857(1), 71. https://doi.org/10.3847/1538-4357/aab61a

© 2018. The American Astronomical Society. All rights reserved. We explore how the group environment may affect the evolution of star-forming galaxies. We select 1197 Galaxy And Mass Assembly groups at 0.05 ≤ z ≤ 0.2 and analyze the projected phase s... Read More about Galaxy and mass assembly (GAMA): Impact of the group environment on galaxy star formation.

The impact of (n, γ) reaction rate uncertainties of unstable isotopes near N = 50 on the i-process nucleosynthesis in He-shell flash white dwarfs (2018)
Journal Article
Denissenkov, P., Perdikakis, G., Herwig, F., Schatz, H., Ritter, C., Pignatari, M., Jones, S., Nikas, S., & Spyrou, A. (2018). The impact of (n, γ) reaction rate uncertainties of unstable isotopes near N = 50 on the i-process nucleosynthesis in He-shell flash white dwarfs. Journal of Physics G: Nuclear and Particle Physics, 45(5), 055203. https://doi.org/10.1088/1361-6471/aabb6e

The first-peak s-process elements Rb, Sr, Y and Zr in the post-AGB star Sakurai's object (V4334 Sagittarii) have been proposed to be the result of i-process nucleosynthesis in a post-AGB very-late thermal pulse event. We estimate the nuclear physics... Read More about The impact of (n, γ) reaction rate uncertainties of unstable isotopes near N = 50 on the i-process nucleosynthesis in He-shell flash white dwarfs.

The effect of the condensed-phase environment on the vibrational frequency shift of a hydrogen molecule inside clathrate hydrates (2018)
Journal Article
Powers, A., Scribano, Y., Lauvergnat, D., Mebe, E., Benoit, D. M., & Bačić, Z. (2018). The effect of the condensed-phase environment on the vibrational frequency shift of a hydrogen molecule inside clathrate hydrates. The Journal of chemical physics, 148(14), 144304. https://doi.org/10.1063/1.5024884

© 2018 Author(s). We report a theoretical study of the frequency shift (redshift) of the stretching fundamental transition of an H 2 molecule confined inside the small dodecahedral cage of the structure II clathrate hydrate and its dependence on the... Read More about The effect of the condensed-phase environment on the vibrational frequency shift of a hydrogen molecule inside clathrate hydrates.

Conjugated, rod-like viologen oligomers: Correlation of oligomer length with conductivity and photoconductivity (2018)
Journal Article
Chen, L., Vivier, E., Eling, C. J., Babra, T. S., Bouillard, J. S. G., Adawi, A. M., Benoit, D. M., Hartl, F., Colquhoun, H. M., Efremova, O. A., & Greenland, B. W. (2018). Conjugated, rod-like viologen oligomers: Correlation of oligomer length with conductivity and photoconductivity. Synthetic Metals, 241, 31-38. https://doi.org/10.1016/j.synthmet.2018.03.019

© 2018 An iterative synthesis has been used to produce conjugated, monodisperse, viologen-based aromatic oligomers containing up to 12 aromatic/heterocyclic rings. The methoxy-substituted oligomers were soluble in common organic solvents and could be... Read More about Conjugated, rod-like viologen oligomers: Correlation of oligomer length with conductivity and photoconductivity.

The influence of solvent representation on nuclear shielding calculations of protonation states of small biological molecules (2018)
Journal Article
Roggatz, C. C., Lorch, M., & Benoit, D. M. (2018). The influence of solvent representation on nuclear shielding calculations of protonation states of small biological molecules. Journal of chemical theory and computation : JCTC, 14(5), 2684-2695. https://doi.org/10.1021/acs.jctc.7b01020

In this study, we assess the influence of solvation on the accuracy and reliability of isotropic nuclear magnetic shielding calculations for amino acids in comparison to experimental data. We focus particularly on the performance of solvation methods... Read More about The influence of solvent representation on nuclear shielding calculations of protonation states of small biological molecules.

A multiscale model of the effect of Ir thickness on the static and dynamic properties of Fe/Ir/Fe films (2018)
Journal Article
Cuadrado, R., Oroszlány, L., Szunyogh, L., Hrkac, G., Chantrell, R. W., & Ostler, T. A. (2018). A multiscale model of the effect of Ir thickness on the static and dynamic properties of Fe/Ir/Fe films. Scientific reports, 8(1), Article 3879. https://doi.org/10.1038/s41598-018-21934-5

The complex magnetic properties of Fe/Ir/Fe sandwiches are studied using a hierarchical multi-scale model. The approach uses first principles calculations and thermodynamic models to reveal the equilibrium spinwave, magnetization and dynamic demagnet... Read More about A multiscale model of the effect of Ir thickness on the static and dynamic properties of Fe/Ir/Fe films.

Extragalactic archaeology with the C, N, and O chemical abundances (2018)
Journal Article
Vincenzo, F., & Kobayashi, C. (2018). Extragalactic archaeology with the C, N, and O chemical abundances. Astronomy and Astrophysics, 610, Article L16. https://doi.org/10.1051/0004-6361/201732395

We predict how the C, N, and O abundances within the interstellar medium of galaxies evolve as functions of the galaxy star formation history (SFH). We adopt a hydrodynamical cosmological simulation, focusing on three star-forming disc galaxies with... Read More about Extragalactic archaeology with the C, N, and O chemical abundances.

i-process contribution of rapidly accreting white dwarfs to the solar composition of first-peak neutron-capture elements (2018)
Journal Article
Côté, B., Denissenkov, P., Herwig, F., Ruiter, A. J., Ritter, C., Pignatari, M., & Belczynski, K. (2018). i-process contribution of rapidly accreting white dwarfs to the solar composition of first-peak neutron-capture elements. The Astrophysical journal, 854(2), 1-14. https://doi.org/10.3847/1538-4357/aaaae8

Rapidly accreting white dwarfs (RAWDs) have been proposed as contributors to the chemical evolution of heavy elements in the Galaxy. Here, we test this scenario for the first time and determine the contribution of RAWDs to the solar composition of fi... Read More about i-process contribution of rapidly accreting white dwarfs to the solar composition of first-peak neutron-capture elements.

Cover Picture: Ann. Phys. 2'2018 (2018)
Journal Article
Verrelli, E., Michelakaki, I., Boukos, N., Kyriakou, G., & Tsoukalas, D. (2018). Cover Picture: Ann. Phys. 2'2018. Annalen der Physik, 530(2), https://doi.org/10.1002/andp.201870013

In article number 1700256, Emanuele Verrelli and co‐workers propose that cluster beam deposition of sub‐2nm magic number Au clusters, Au20 and Au55, on flat surfaces reveals a rich evolution of the phenomena taking place at substrate level. New magic... Read More about Cover Picture: Ann. Phys. 2'2018.

Role of core-collapse supernovae in explaining Solar System abundances of p nuclides (2018)
Journal Article
Travaglio, C., Rauscher, T., Heger, A., Pignatari, M., & West, C. (2018). Role of core-collapse supernovae in explaining Solar System abundances of p nuclides. The Astrophysical journal, 854(1), Article 18. https://doi.org/10.3847/1538-4357/aaa4f7

The production of the heavy stable proton-rich isotopes between 74Se and 196Hg—the p nuclides—is due to the contribution from different nucleosynthesis processes, activated in different types of stars. Whereas these processes have been subject to var... Read More about Role of core-collapse supernovae in explaining Solar System abundances of p nuclides.

Violations of a Leggett-Garg inequality without signaling for a photonic qutrit probed with ambiguous measurements (2018)
Journal Article
Wang, K., Emary, C., Xu, M., Zhan, X., Bian, Z., Xiao, L., & Xue, P. (2018). Violations of a Leggett-Garg inequality without signaling for a photonic qutrit probed with ambiguous measurements. Physical Review A, 97(2), Article 020101(R). https://doi.org/10.1103/PhysRevA.97.020101

We realize a quantum three-level system with photons distributed among three different spatial and polarization modes. Ambiguous measurements of the state of the qutrit are realized by blocking one out for the three modes at any one time. Using these... Read More about Violations of a Leggett-Garg inequality without signaling for a photonic qutrit probed with ambiguous measurements.

an overview of the MHONGOOSE survey: Observing nearby galaxies with MeerKAT (2018)
Journal Article
de Blok, W. J., Adams, E. A., Amram, P., Athanassoula, E., Bagetakos, I., Balkowski, C., Bershady, M. A., Beswick, R., Bigiel, F., Blyth, S. L., Bosma, A., Booth, R. S., Bouchard, A., Brinks, E., Carignan, C., Chemin, L., Combes, F., Conway, J., Elson, E. C., English, J., …Zijlstra, A. (2018). an overview of the MHONGOOSE survey: Observing nearby galaxies with MeerKAT. Proceedings of Science, 277, Article 7. https://doi.org/10.22323/1.277.0007

© Copyright owned by the author(s). MHONGOOSE is a deep survey of the neutral hydrogen distribution in a representative sample of 30 nearby disk and dwarf galaxies with H I masses from ∼ 106 to ∼ 1011 M, and luminosities from MR ∼ 12 to MR ∼ −22. The... Read More about an overview of the MHONGOOSE survey: Observing nearby galaxies with MeerKAT.

Galaxy And Mass Assembly (GAMA): the effect of galaxy group environment on active galactic nuclei (2018)
Journal Article
Gordon, Y. A., Pimbblet, K. A., Owers, M. S., Bland-Hawthorn, J., Brough, S., Brown, M. J. I., Cluver, M. E., Croom, S. M., Holwerda, B. W., Loveday, J., Mahajan, S., & Wang, L. (2018). Galaxy And Mass Assembly (GAMA): the effect of galaxy group environment on active galactic nuclei. Monthly notices of the Royal Astronomical Society, 475(3), 4223-4234. https://doi.org/10.1093/mnras/sty115

© 2017 The Author(s). In galaxy clusters, efficiently accreting active galactic nuclei (AGNs) are preferentially located in the infall regions of the cluster projected phase-space, and are rarely found in the cluster core. This has been attributed to... Read More about Galaxy And Mass Assembly (GAMA): the effect of galaxy group environment on active galactic nuclei.

The furan microsolvation blind challenge for quantum chemical methods: First steps (2018)
Journal Article
Gottschalk, H. C., Poblotzki, A., Suhm, M. A., Al-Mogren, M. M., Antony, J., Auer, A. A., Baptista, L., Benoit, D. M., Bistoni, G., Bohle, F., Dahmani, R., Firaha, D., Grimme, S., Hansen, A., Harding, M. E., Hochlaf, M., Holzer, C., Jansen, G., Klopper, W., Kopp, W. A., …Mata, R. A. (2018). The furan microsolvation blind challenge for quantum chemical methods: First steps. The Journal of chemical physics, 148(1), Article 014301. https://doi.org/10.1063/1.5009011

© 2018 Author(s). Herein we present the results of a blind challenge to quantum chemical methods in the calculation of dimerization preferences in the low temperature gas phase. The target of study was the first step of the microsolvation of furan, 2... Read More about The furan microsolvation blind challenge for quantum chemical methods: First steps.

Is the Milky Way still breathing? RAVE–Gaia streaming motions (2018)
Journal Article
Carrillo, I., Minchev, I., Kordopatis, G., Steinmetz, M., Binney, J., Anders, F., Bienaymé, O., Bland-Hawthorn, J., Famaey, B., Freeman, K. C., Gilmore, G., Gibson, B. K., Grebel, E. K., Helmi, A., Just, A., Kunder, A., McMillan, P., Monari, G., Munari, U., Navarro, J., …Zwitter, T. (2018). Is the Milky Way still breathing? RAVE–Gaia streaming motions. Monthly notices of the Royal Astronomical Society, 475(2), 2679-2696. https://doi.org/10.1093/mnras/stx3342

We use data from the Radial Velocity Experiment (RAVE) and the Tycho-Gaia astrometric solution (TGAS) catalogue to compute the velocity fields yielded by the radial (VR), azimuthal (Vϕ),and vertical (Vz) components of associated Galactocentric veloci... Read More about Is the Milky Way still breathing? RAVE–Gaia streaming motions.