Search Results - "Siess, Lionel"
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Super- and massive AGB stars – IV. Final fates – initial-to-final mass relation
Published in Monthly notices of the Royal Astronomical Society (21-01-2015)“…We explore the final fates of massive intermediate-mass stars by computing detailed stellar models from the zero-age main sequence until near the end of the…”
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The intermediate neutron-capture process in AGB stars
Published in EPJ Web of conferences (2023)“…The intermediate neutron-capture process is thought to arise when protons are mixed in a convective helium-burning zone. This can happen during the early…”
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Super and massive AGB stars – III. Nucleosynthesis in metal-poor and very metal-poor stars – Z = 0.001 and 0.0001
Published in Monthly notices of the Royal Astronomical Society (11-06-2014)“…We present a new grid of stellar models and nucleosynthetic yields for super-AGB stars with metallicities Z = 0.001 and 0.0001, applicable for use within…”
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Production of Lithium and Heavy Elements in AGB Stars Experiencing PIEs
Published in Galaxies (01-10-2024)“…Asymptotic giant branch (AGB) stars can experience proton ingestion events (PIEs), leading to a rich nucleosynthesis. During a PIE, the intermediate neutron…”
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Insights into AGB Nucleosynthesis Thanks to Spectroscopic Abundance Measurements in Intrinsic and Extrinsic Stars
Published in Universe (Basel) (29-03-2022)“…The foundations of stellar nucleosynthesis have been established more than 70 years ago. Since then, much progress has been made, both on the theoretical side,…”
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Carbon-enhanced metal-poor stars enriched in s-process and r-process elements
Published in Journal of astrophysics and astronomy (01-12-2020)“…We present an on-going project consisting of analysis of a sample of twenty-five metal-poor stars, most of them carbon-enriched and thus tagged carbon-enhanced…”
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Short-lived radioactivity in the early solar system: The Super-AGB star hypothesis
Published in Meteoritics & planetary science (01-12-2012)“…– The composition of the most primitive solar system condensates, such as calcium‐aluminum‐rich inclusions (CAIs) and micron‐sized corundum grains, show that…”
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Structure, Evolution, and Nucleosynthesis of Primordial Stars
Published in The Astrophysical journal (01-05-2002)Get full text
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HOT JUPITERS AND COOL STARS
Published in The Astrophysical journal (10-10-2014)“…Close-in planets are in jeopardy, as their host stars evolve off the main sequence (MS) to the subgiant and red giant phases. In this paper, we explore the…”
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Super and massive AGB stars - II. Nucleosynthesis and yields - Z = 0.02, 0.008 and 0.004
Published in Monthly notices of the Royal Astronomical Society (01-01-2014)“…We have computed detailed evolution and nucleosynthesis models for super and massive asymptotic giant branch (AGB) stars over the mass range 6.5-9.0 M in…”
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X-shooter survey of young intermediate-mass stars – I. Stellar characterization and disc evolution
Published in Monthly notices of the Royal Astronomical Society (09-01-2023)“…ABSTRACT Intermediate-mass stars (IMSs) represent the link between low-mass and high-mass stars, and cover a key mass range for giant planet formation. In this…”
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Dust formation in common envelope binary interaction – I: 3D simulations using the Bowen approximation
Published in Monthly notices of the Royal Astronomical Society (01-01-2024)“…ABSTRACT We carried out 3D smoothed particle hydrodynamics simulations of the common envelope binary interaction using the approximation of Bowen to calculate…”
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Dust formation in common envelope binary interactions – II: 3D simulations with self-consistent dust formation
Published in Monthly notices of the Royal Astronomical Society (01-09-2024)“…ABSTRACT We performed numerical simulations of the common envelope (CE) interaction between thermally pulsing asymptotic giant branch (AGB) stars of 1.7 and…”
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The accretion of brown dwarfs and planets by giant stars — II. Solar-mass stars on the red giant branch
Published in Monthly notices of the Royal Astronomical Society (01-10-1999)“…This paper extends our previous study of planet/brown dwarf accretion by giant stars to solar-mass stars located on the red giant branch. The model assumes…”
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The planets capture model of V838 Monocerotis: conclusions for the penetration depth of the planet(s)
Published in Monthly notices of the Royal Astronomical Society (11-08-2006)“…V838 Mon is the prototype of a new class of objects. Understanding the nature of its multistage outburst and similar systems is challenging. So far, several…”
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The accretion of brown dwarfs and planets by giant stars — I. Asymptotic giant branch stars
Published in Monthly notices of the Royal Astronomical Society (16-04-1999)“…We study the response of the structure of an asymptotic giant branch (AGB) star to the accretion of a brown dwarf or planet in its interior. In particular, we…”
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Dust Formation in Common Envelope Binary Interaction -- I: 3D Simulations Using the Bowen Approximation
Published 14-04-2024“…We carried out 3D smoothed particle hydrodynamics simulations of the common envelope binary interaction using the approximation of Bowen to calculate the dust…”
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Impact of HI cooling and study of accretion disks in AGB wind-companion smoothed particle hydrodynamic simulations
Published 23-08-2024“…A&A 691, A84 (2024) High-resolution observations reveal that the outflows of evolved low- and intermediate-mass stars harbour complex morphological structures…”
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The accretion of brown dwarfs and planets by giant stars - II. Solar-mass stars on the red giant branch
Published in Monthly notices of the Royal Astronomical Society (01-10-1999)Get full text
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