Search Results - "Georgy, C."

The effects of surface fossil magnetic fields on massive star evolution: I. Magnetic field evolution, mass-loss quenching, and magnetic braking by Keszthelyi, Z, Meynet, G, Georgy, C, Wade, G A, Petit, V, David-Uraz, A

“…Abstract Surface magnetic fields have a strong impact on stellar mass loss and rotation and, as a consequence, on the evolution of massive stars. In this work,…”
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Dependence of convective boundary mixing on boundary properties and turbulence strength by Cristini, A, Hirschi, R, Meakin, C, Arnett, D, Georgy, C, Walkington, I

“…Abstract Convective boundary mixing is one of the major uncertainties in stellar evolution. In order to study its dependence on boundary properties and…”
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Apparent age spreads in clusters and the role of stellar rotation by Niederhofer, F., Georgy, C., Bastian, N., Ekström, S.

“…We use the Geneva syclist isochrone models that include the effects of stellar rotation to investigate the role that rotation has on the resulting…”
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3D hydrodynamic simulations of carbon burning in massive stars by Cristini, A., Meakin, C., Hirschi, R., Arnett, D., Georgy, C., Viallet, M., Walkington, I.

“…Abstract We present the first detailed 3D hydrodynamic implicit large eddy simulations of turbulent convection of carbon burning in massive stars. Simulations…”
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Extended main sequence turnoffs in open clusters as seen by Gaia – I. NGC 2818 and the role of stellar rotation by Bastian, N, Kamann, S, Cabrera-Ziri, I, Georgy, C, Ekström, S, Charbonnel, C, de Juan Ovelar, M, Usher, C

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A high fraction of Be stars in young massive clusters: evidence for a large population of near-critically rotating stars by Bastian, N, Cabrera-Ziri, I, Niederhofer, F, de Mink, S, Georgy, C, Baade, D, Correnti, M, Usher, C, Romaniello, M

“…Recent photometric analyses of the colour-magnitude diagrams of young massive clusters (YMCs) have found evidence for splitting in the main sequence and…”
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Convective core entrainment in 1D main-sequence stellar models by Scott, L J A, Hirschi, R, Georgy, C, Arnett, W D, Meakin, C, Kaiser, E A, Ekström, S, Yusof, N

“…ABSTRACT 3D hydrodynamics models of deep stellar convection exhibit turbulent entrainment at the convective-radiative boundary which follows the entrainment…”
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The effects of surface fossil magnetic fields on massive star evolution – II. Implementation of magnetic braking in mesa and implications for the evolution of surface rotation in OB stars by Keszthelyi, Z, Meynet, G, Shultz, M E, David-Uraz, A, ud-Doula, A, Townsend, R H D, Wade, G A, Georgy, C, Petit, V, Owocki, S P

“…ABSTRACT The time evolution of angular momentum and surface rotation of massive stars are strongly influenced by fossil magnetic fields via magnetic braking…”
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The life cycles of Be viscous decretion discs: fundamental disc parameters of 54 SMC Be stars by Rímulo, L R, Carciofi, A C, Vieira, R G, Rivinius, Th, Faes, D M, Figueiredo, A L, Bjorkman, J E, Georgy, C, Ghoreyshi, M R, Soszyński, I

“…Abstract Be stars are main-sequence massive stars with emission features in their spectrum, which originates in circumstellar gaseous discs. Even though the…”
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The effects of stellar rotation along the main sequence of the 100-Myr-old massive cluster NGC 1850 by Kamann, S, Saracino, S, Bastian, N, Gossage, S, Usher, C, Baade, D, Cabrera-Ziri, I, de Mink, S E, Ekstrom, S, Georgy, C, Hilker, M, Larsen, S S, Mackey, D, Niederhofer, F, Platais, I, Yong, D

“…ABSTRACT Young star clusters enable us to study the effects of stellar rotation on an ensemble of stars of the same age and across a wide range in stellar mass…”
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3D stellar evolution: hydrodynamic simulations of a complete burning phase in a massive star by Rizzuti, F, Hirschi, R, Arnett, W D, Georgy, C, Meakin, C, Murphy, A StJ, Rauscher, T, Varma, V

“…ABSTRACT Our knowledge of stellar evolution is driven by one-dimensional (1D) simulations. 1D models, however, are severely limited by uncertainties on the…”
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Did the progenitor of SN 2011dh have a binary companion? by Maund, J. R., Arcavi, I., Ergon, M., Eldridge, J. J., Georgy, C., Cenko, S. B., Horesh, A., Izzard, R. G., Stancliffe, R. J.

“…We present late-time Hubble Space Telescope ultraviolet (UV) and optical observations of the site of SN 2011dh in the galaxy M51, ∼1164  days post-explosion…”
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How stellar rotation shapes the colour−magnitude diagram of the massive intermediate-age star cluster NGC 1846 by Kamann, S, Bastian, N, Gossage, S, Baade, D, Cabrera-Ziri, I, Da Costa, G, de Mink, S E, Georgy, C, Giesers, B, Göttgens, F, Hilker, M, Husser, T-O, Lardo, C, Larsen, S S, Mackey, D, Martocchia, S, Mucciarelli, A, Platais, I, Roth, M M, Salaris, M, Usher, C, Yong, D

“…ABSTRACT We present a detailed study of stellar rotation in the massive 1.5 Gyr old cluster NGC 1846 in the Large Magellanic Cloud. Similar to other clusters…”
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Shell mergers in the late stages of massive star evolution: new insight from 3D hydrodynamic simulations by Rizzuti, F, Hirschi, R, Varma, V, Arnett, W D, Georgy, C, Meakin, C, Mocák, M, Murphy, A StJ, Rauscher, T

“…ABSTRACT One-dimensional (1D) stellar evolution models are widely used across various astrophysical fields, however they are still dominated by important…”
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Realistic 3D hydrodynamics simulations find significant turbulent entrainment in massive stars by Rizzuti, F, Hirschi, R, Georgy, C, Arnett, W D, Meakin, C, Murphy, A StJ

“…ABSTRACT Our understanding of stellar structure and evolution coming from one-dimensional (1D) stellar models is limited by uncertainties related to…”
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The Effects of Surface Fossil Magnetic Fields on Massive Star Evolution: IV. Grids of Models at Solar, LMC, and SMC Metallicities by Keszthelyi, Z., Koter, A de, Götberg, Y, Meynet, G, Brands, S A, Petit, V, Carrington, M, David-Uraz, A, Geen, S T, Georgy, C, Hirschi, R, Puls, J, Ramalatswa, K J, Shultz, M E, ud-Doula, A

“…Magnetic fields can drastically change predictions of evolutionary models of massive stars via mass-loss quenching, magnetic braking, and efficient angular…”
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First results from the LIFE project: discovery of two magnetic hot evolved stars by Martin, A J, Neiner, C, Oksala, M E, Wade, G A, Keszthelyi, Z, Fossati, L, Marcolino, W, Mathis, S, Georgy, C

“…Abstract We present the initial results of the Large Impact of magnetic Fields on the Evolution of hot stars (LIFE) project. The focus of this project is the…”
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Code dependencies of pre-supernova evolution and nucleosynthesis in massive stars: evolution to the end of core helium burning by Jones, S, Hirschi, R, Pignatari, M, Heger, A, Georgy, C, Nishimura, N, Fryer, C, Herwig, F

“…Massive stars are key sources of radiative, kinetic and chemical feedback in the Universe. Grids of massive star models computed by different groups each using…”
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Bayesian sampling with BeAtlas, a grid of synthetic Be star spectra I. Recovering the fundamental parameters of α Eri and β CMi by Rubio, A C, Carciofi, A C, Ticiani, P, Mota, B C, Vieira, R G, Faes, D M, Genaro, M, de Amorim, T H, Klement, R, Araya, I, Arcos, C, Curé, M, Domiciano de Souza, A, Georgy, C, Jones, C E, Suffak, M W, Silva, A C F

“…ABSTRACT Classical B emission (Be) stars are fast rotating, near-main-sequence B-type stars. The rotation and the presence of circumstellar discs profoundly…”
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Period–luminosity relations of fast-rotating B-type stars in the young open cluster NGC 3766 by Saio, H., Ekström, S., Mowlavi, N., Georgy, C., Saesen, S., Eggenberger, P., Semaan, T., Salmon, S. J. A. J.

“…Abstract We study the pulsational properties of rapidly rotating main-sequence B-type stars using linear non-adiabatic analysis of non-radial low-frequency…”
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