Disentangling Stellar Age Estimates from Galactic Chemodynamical Evolution [PDF]
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
doaj +2 more sources
Estimating stellar ages and metallicities from parallaxes and broadband photometry: successes and shortcomings [PDF]
Astronomy & Astrophysics, 2018 A deep understanding of the Milky Way galaxy, its formation and evolution requires observations of huge numbers of stars. Stellar photometry, therefore, provides an economical method to obtain intrinsic stellar parameters.
L. M. Howes +4 more
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The Solar Twin Planet Search III. The [Y/Mg] clock: estimating stellar ages of solar-type stars [PDF]
, 2016 Solar twins are stars with similar stellar (surface) parameters to the Sun that can have a wide range of ages. This provide an opportunity to analyze the variation of their chemical abundances with age.
Marcelo Tucci Maia +5 more
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Two distinct halo populations in the solar neighborhood. III. Evidence from stellar ages and orbital parameters [PDF]
, 2011 Context. In Papers I and II of this series, we have found clear indications of the existence of two distinct populations of stars in the solar neighborhood belonging to the metal-rich end of the halo metallicity distribution function.
W. J. Schuster +3 more
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StarFlow: Leveraging Normalizing Flows for Stellar Age Estimation in SDSS-V DR19
The Astronomical JournalUnderstanding the ages of stars is crucial for unraveling the formation history and evolution of our Galaxy. Traditional methods for estimating stellar ages from spectroscopic data often struggle with providing appropriate uncertainty estimations and are
Alexander Stone-Martinez +7 more
doaj +2 more sources
Stellar ages, masses, extinctions, and orbital parameters based on spectroscopic parameters of Gaia DR3 [PDF]
Astronomy & Astrophysics, 2022 Gaia DR3 provides radial velocities for 33 million stars and spectroscopically derived atmospheric parameters for more than five million targets. When combined with the astrometric data, these allow us to derive orbital and stellar parameters that are ...
G. Kordopatis +15 more
semanticscholar +1 more source
Determination of stellar ages from isochrones: Bayesian estimation versus isochrone fitting [PDF]
, 2005 Bjarne Rosenkilde Jørgensen +1 more
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Bar resonances and low angular momentum moving groups in the Galaxy revealed by their stellar ages [PDF]
Astronomy & Astrophysics, 2020 We use the second Gaia data release to dissect the Milky Way disc in phase-space and relative ages. We confirm and report the existence of multiple velocity moving groups at low azimuthal velocities and angular momenta, below Arcturus, regularly ...
C. Laporte +5 more
semanticscholar +1 more source
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
doaj +1 more source
Toward Precise Stellar Ages: Combining Isochrone Fitting with Empirical Gyrochronology [PDF]
Astronomical Journal, 2019 We present a new age-dating technique that combines gyrochronology with isochrone fitting to infer ages for FGKM main-sequence and subgiant field stars. Gyrochronology and isochrone fitting are each capable of providing relatively precise ages for field ...
R. Angus +9 more
semanticscholar +1 more source