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The i-process yields of rapidly accreting white dwarfs from multicycle He-shell flash stellar evolution models with mixing parametrizations from 3D hydrodynamics simulations (2019)
Journal Article
Denissenkov, P. A., Herwig, F., Woodward, P., Andrassy, R., Pignatari, M., & Jones, S. (2019). The i-process yields of rapidly accreting white dwarfs from multicycle He-shell flash stellar evolution models with mixing parametrizations from 3D hydrodynamics simulations. Monthly notices, containing papers, abstracts of papers, and reports of the proceedings of the Society, 488(3), 4258-4270. https://doi.org/10.1093/mnras/stz1921

Galactic chemical evolution of radioactive isotopes (2019)
Journal Article
Côté, B., Lugaro, M., Reifarth, R., Pignatari, M., Világos, B., Yagüe, A., & Gibson, B. K. (2019). Galactic chemical evolution of radioactive isotopes. The Astrophysical journal, 878(2), https://doi.org/10.3847/1538-4357/ab21d1

The presence of short-lived (∼ Myr) radioactive isotopes in meteoritic inclusions at the time of their formation represents a unique opportunity to study the circumstances that led to the formation of the Solar System. To interpret these observations... Read More about Galactic chemical evolution of radioactive isotopes.

Using failed supernovae to constrain the Galactic r-process element production (2019)
Journal Article
Wehmeyer, B., Wehmeyer, B., Fröhlich, C., Fröhlich, C., Côté, B., Côté, B., …Thielemann, F. K. (2019). Using failed supernovae to constrain the Galactic r-process element production. Monthly notices, containing papers, abstracts of papers, and reports of the proceedings of the Society, 487(2), 1745-1753. https://doi.org/10.1093/mnras/stz1310

Rapid neutron capture process (r-process) elements have been detected in a large fraction of metal-poor halo stars, with abundances relative to iron (Fe) that vary by over two orders of magnitude. This scatter is reduced to less than a factor of 3 in... Read More about Using failed supernovae to constrain the Galactic r-process element production.

Neutron star mergers might not be the only source of r-process elements in the Milky Way (2019)
Journal Article
Côté, B., Eichler, M., Arcones, A., Hansen, C. J., Simonetti, P., Frebel, A., …Matteucci, F. (2019). Neutron star mergers might not be the only source of r-process elements in the Milky Way. The Astrophysical journal, 875(2), 106. https://doi.org/10.3847/1538-4357/ab10db

Probing the origin of r-process elements in the universe represents a multidisciplinary challenge. We review the observational evidence that probes the properties of r-process sites, and address them using galactic chemical evolution simulations, bin... Read More about Neutron star mergers might not be the only source of r-process elements in the Milky Way.

H2, HD, and D2 in the small cage of structure II clathrate hydrate: vibrational frequency shifts from fully coupled quantum six-dimensional calculations of the vibration-translation-rotation eigenstates (2019)
Journal Article
Lauvergnat, D., Felker, P., Scribano, Y., Benoit, D. M., & Bačić, Z. (2019). H2, HD, and D2 in the small cage of structure II clathrate hydrate: vibrational frequency shifts from fully coupled quantum six-dimensional calculations of the vibration-translation-rotation eigenstates. The Journal of chemical physics, 150(15), https://doi.org/10.1063/1.5090573

We report the first fully coupled quantum six-dimensional (6D) bound-state calculations of the vibration-translation-rotation eigenstates of a flexible H2, HD, and D2 molecule confined inside the small cage of the structure II clathrate hydrate embed... Read More about H2, HD, and D2 in the small cage of structure II clathrate hydrate: vibrational frequency shifts from fully coupled quantum six-dimensional calculations of the vibration-translation-rotation eigenstates.

Catching element formation in the act (2019)
Other
Fryer, C. L., Timmes, F., Hungerford, A. L., Couture, A., Adams, F., Aoki, W., …Pignatari, M. (2019). Catching element formation in the act

Gamma-ray astronomy explores the most energetic photons in nature to address some of the most pressing puzzles in contemporary astrophysics. It encompasses a wide range of objects and phenomena: stars, supernovae, novae, neutron stars, stellar-mass b... Read More about Catching element formation in the act.

Enrichment of the Galactic disc with neutron capture elements: Sr (2019)
Journal Article
Mishenina, T., Pignatari, M., Gorbaneva, T., Bisterzo, S., Travaglio, C., Thielemann, F. K., & Soubiran, C. (2019). Enrichment of the Galactic disc with neutron capture elements: Sr. Monthly notices, containing papers, abstracts of papers, and reports of the proceedings of the Society, 484(3), 3846-3864. https://doi.org/10.1093/mnras/stz178

The enrichment history of heavy neutron-capture elements in the Milky Way disc provides fundamental information about the chemical evolution of our Galaxy and about the stellar sources that made those elements. In this work we give new observational... Read More about Enrichment of the Galactic disc with neutron capture elements: Sr.

Nucleosynthetic yields from neutron stars accreting in binary common envelopes (2019)
Journal Article
Keegans, J. D., Fryer, C. L., Jones, S. W., Côté, B., Belczynski, K., Herwig, F., …Diget, C. A. (2019). Nucleosynthetic yields from neutron stars accreting in binary common envelopes. Monthly notices, containing papers, abstracts of papers, and reports of the proceedings of the Society, 485(1), 620-639. https://doi.org/10.1093/mnras/stz368

© 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society. Massive-star binaries can undergo a phase where one of the two stars expands during its advanced evolutionary stage as a giant and envelops its com... Read More about Nucleosynthetic yields from neutron stars accreting in binary common envelopes.

Enrichment of the Galactic disc with neutron-capture elements: Mo and Ru (2019)
Journal Article
Thielemann, F. K., Mishenina, T., Pignatari, M., Gorbaneva, T., Travaglio, C., Côté, B., …Soubiran, C. (2019). Enrichment of the Galactic disc with neutron-capture elements: Mo and Ru. Monthly notices of the Royal Astronomical Society, 489(2), 1697-1708. https://doi.org/10.1093/mnras/stz2202

© 2019 The Author(s). We present new observational data for the heavy elements molybdenum (Mo, Z = 42) and ruthenium (Ru, Z = 44) in F-, G-, and K-stars belonging to different substructures of the Milky Way. The range of metallicity covered is -1.0 <... Read More about Enrichment of the Galactic disc with neutron-capture elements: Mo and Ru.

Remnants and ejecta of thermonuclear electron-capture supernovae: Constraining oxygen-neon deflagrations in high-density white dwarfs (2018)
Journal Article
Jones, S., Röpke, F. K., Fryer, C., Ruiter, A. J., Seitenzahl, I. R., Nittler, L. R., …Belczynski, K. (2019). Remnants and ejecta of thermonuclear electron-capture supernovae: Constraining oxygen-neon deflagrations in high-density white dwarfs. Astronomy and Astrophysics, 622, https://doi.org/10.1051/0004-6361/201834381

The explosion mechanism of electron-capture supernovae (ECSNe) remains equivocal: it is not completely clear whether these events are implosions in which neutron stars are formed, or incomplete thermonuclear explosions that leave behind bound ONeFe w... Read More about Remnants and ejecta of thermonuclear electron-capture supernovae: Constraining oxygen-neon deflagrations in high-density white dwarfs.

The s process in AGB stars as constrained by a large sample of barium stars (2018)
Journal Article
Cseh, B., Lugaro, M., D'Orazi, V., de Castro, D. B., Pereira, C. B., Karakas, A. I., …Cristallo, S. (2018). The s process in AGB stars as constrained by a large sample of barium stars. Astronomy and astrophysics, 620, https://doi.org/10.1051/0004-6361/201834079

© ESO 2018. Context. Barium (Ba) stars are dwarf and giant stars enriched in elements heavier than iron produced by the slow neutron-capture process (s process). These stars belong to binary systems in which the primary star evolved through the asymp... Read More about The s process in AGB stars as constrained by a large sample of barium stars.

NuGrid stellar data set – II. Stellar yields from H to Bi for stellar models with MZAMS = 1–25 M⊙ and Z = 0.0001–0.02 (2018)
Journal Article
Ritter, C., Herwig, F., Jones, S., Pignatari, M., Fryer, C., & Hirschi, R. (2018). NuGrid stellar data set – II. Stellar yields from H to Bi for stellar models with MZAMS = 1–25 M⊙ and Z = 0.0001–0.02. Monthly notices, containing papers, abstracts of papers, and reports of the proceedings of the Society, 480(1), 538-571. https://doi.org/10.1093/mnras/sty1729

We provide here a significant extension of the NuGrid Set 1 models in mass coverage and towards lower metallicity, adopting the same physics assumptions. The combined data set now includes the initial masses MZAMS/M⊙ = 1, 1.65, 2, 3, 4, 5, 6, 7,... Read More about NuGrid stellar data set – II. Stellar yields from H to Bi for stellar models with MZAMS = 1–25 M⊙ and Z = 0.0001–0.02.

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.

Viscoelastically prestressed polymeric matrix composites: An investigation into fibre deformation and prestress mechanisms (2018)
Journal Article
Wang, B., & Fancey, K. S. (2018). Viscoelastically prestressed polymeric matrix composites: An investigation into fibre deformation and prestress mechanisms. Composites Part A: Applied Science and Manufacturing, 111, 106-114. https://doi.org/10.1016/j.compositesa.2018.05.013

© 2018 Elsevier Ltd A viscoelastically prestressed polymeric matrix composite (VPPMC) is produced by subjecting polymeric fibres to a creep load, which is removed before moulding the fibres into a polymeric matrix. The resulting fibre viscoelastic re... Read More about Viscoelastically prestressed polymeric matrix composites: An investigation into fibre deformation and prestress mechanisms.

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., …Seabroke, G. (2018). Correlations between age, kinematics, and chemistry as seen by the RAVE survey. Monthly notices, containing papers, abstracts of papers, and reports of the proceedings of the 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., …Wyse, R. F. (2018). Improved distances and ages for stars common to TGAS and RAVE. Monthly notices, containing papers, abstracts of papers, and reports of the proceedings of the 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.

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., …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. an Institute of Physics journal. 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.

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), 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.