Results 1 to 10 of about 96,030 (294)
Stellar ages from asteroseismology [PDF]
Proceedings of the International Astronomical Union, 2008 Asteroseismology provides powerful means to probe stellar interiors. The oscillations frequencies are closely related to stellar interior properties via the density and sound speed profiles.
Aizenman +17 more
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Towards age/rotation/magnetic activity relation with seismology
EPJ Web of Conferences, 2015 The knowledge of stellar ages directly impacts the characterization of a planetary system as it puts strong constraints on the moment when the system was born. Unfortunately, the determination of precise stellar ages is a very difficult task.
Mathur Savita
doaj +3 more sources
The Astrophysical Journal, 2023 The ages of solar-like stars have been at the center of many studies such as exoplanet characterization or Galactic-archeology. While ages are usually computed from stellar evolution models, relations linking ages to other stellar properties, such as ...
Savita Mathur +11 more
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Disentangling Stellar Age Estimates from Galactic Chemodynamical Evolution
The Astrophysical Journal, 2023 Stellar ages are key for determining the formation history of the Milky Way, but are difficult to measure precisely. Furthermore, methods that use chemical abundances to infer ages may entangle the intrinsic evolution of stars with the chemodynamical ...
Jeff Shen +4 more
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Cosmological Constant from Boundary Condition and Its Implications beyond the Standard Model
Universe, 2023 Standard cosmology has long been plagued by a number of persistent problems. The origin of the apparent acceleration of the cosmic expansion remains enigmatic.
Jan O. Stenflo
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Living with a Red Dwarf: X-Ray, UV, and Ca ii Activity–Age Relationships of M Dwarfs
The Astrophysical Journal, 2023 The vast majority of stars in the nearby stellar neighborhood are M dwarfs. Their low masses and luminosities result in slow rates of nuclear evolution and minimal changes to the stars’ observable properties, even along astronomical timescales.
Scott G. Engle
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The Abundance of S-Process Elements: Temporal and Spatial Trends from Open Cluster Observations
Universe, 2022 Spectroscopic observations of stars belonging to open clusters, with well-determined ages and distances, are a unique tool for constraining stellar evolution, nucleosynthesis, mixing processes, and, ultimately, Galactic chemical evolution.
Laura Magrini +8 more
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BONNSAI: a Bayesian tool for comparing stars with stellar evolution models [PDF]
, 2014 Powerful telescopes equipped with multi-fibre or integral field spectrographs combined with detailed models of stellar atmospheres and automated fitting techniques allow for the analysis of large number of stars.
Brott, Ines +5 more
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The California-Kepler Survey. II. Precise Physical Properties of 2025 Kepler Planets and Their Host Stars [PDF]
, 2017 We present stellar and planetary properties for 1305 Kepler Objects of Interest (KOIs) hosting 2025 planet candidates observed as part of the California-Kepler Survey.
Cargile, Phillip A. +13 more
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An Independent Calibration of Stellar Ages: HST Observations of White Dwarfs at V=25 [PDF]
, 1995 The white dwarf luminosity function of a stellar cluster will have a sharp truncation at a luminosity which is determined by the time since formation of the first white dwarfs in that cluster.
Gilmore, Gerard +2 more
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