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Stellar ages from asteroseismology [PDF]
Proceedings of the International Astronomical Union, 2008 AbstractAsteroseismology has been recognized for a long time as a very powerful mean to probe stellar interiors. The oscillations frequencies are closely related to stellar internal structure properties via the density and the sound speed profiles. Since these properties are in turn tightly linked with the mass and evolutionary state, we can expect to ...
Lebreton, Yveline +3 more
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The Stellar Ages of Elliptical Galaxies [PDF]
Astrophysics and Space Science, 1995 Integrated broad-band colors and metallic lines cannot discriminate clearly between the effects of age and Z in old stellar populations. Such data are more sensitive to Z than to age. The Hβ feature provides a way to break this degeneracy. New measurements indicate that the mean stellar ages of typical E galaxy nuclei are fairly young, ranging from 2 ...
Faber, S. M. +3 more
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Stellar ages and stellar rotation [PDF]
, 2016 Stellar ages will play a big role in the next generation of astronomy. Useful to exoplaneteers and galactic archaeologists alike, this relatively under-exploited stellar property is currently limited by the precision of dating techniques. The work presented in this thesis contributes incrementally to a greater understanding of rotation period decay in ...
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Stellar magnetism: empirical trends with age and rotation [PDF]
Monthly Notices of the Royal Astronomical Society, 2014 15 pages, 7 figures.
Vidotto, A. A. +14 more
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Stellar ages and their cosmological context
EAS Publications Series, 2014 Stellar ages have traditionally been used to constrain cosmological models by setting lower limits to the age of the universe. We quickly review the basic cosmological concepts that underpin the derivation of a finite age, and the constraints given by the measure of cosmological parameters at a redshift z ∼ 1000.
D. Valls-Gabaud
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Stellar Ages: A Code to Infer Properties of Stellar Populations
The Astrophysical JournalWe present a novel statistical algorithm, Stellar Ages, which currently infers the age, metallicity, and extinction posterior distributions of stellar populations from their magnitudes.
Joseph J. Guzman +4 more
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Clusters: Age Scales for Stellar Physics [PDF]
EAS Publications Series, 2016 Ages are key to truly understand a large plethora of astrophysical phenomena. On the other hand, stellar clusters are open windows to understand stellar evolution, specifically, the change with time and mass of different stellar properties. As such, they are our laboratories where different theories can be tested, but without accurate ages, our ...
D. Barrado
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The APO-K2 Catalog. II. Accurate Stellar Ages for Red Giant Branch Stars across the Milky Way [PDF]
The Astronomical JournalWe present stellar age determinations for 4661 red giant branch stars in the APO-K2 catalog, derived using mass estimates from K2 asteroseismology from the K2 Galactic Archaeology Program and elemental abundances from the Apache Point Galactic Evolution ...
Jack T. Warfield +13 more
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FFNN–TabNet: An Enhanced Stellar Age Determination Method Based on TabNet
Applied SciencesThe precise ascertainment of stellar ages is pivotal for astrophysical research into stellar characteristics and galactic dynamics. To address the prevalent challenges of suboptimal accuracy in stellar age determination and limited proficiency in ...
Han Zhang +3 more
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How accurate are stellar ages based on stellar models? [PDF]
EAS Publications Series, 2014 83 pages, 46 figures, contribution to the proceedings of the 13rd Evry Schatzman School on Stellar Astrophysics, "The Ages of Stars", Roscoff 2013, EAS Publications Series, eds. Y. Lebreton, D.
Lebreton, Yveline +2 more
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