Ages and Age Spreads in Young Stellar Clusters
, 2017 I review progress towards understanding the time-scales of star and cluster formation and of the absolute ages of young stars. I focus in particular on the areas in which Francesco Palla made highly significant contributions - interpretation of the ...
Jeffries, R. D.
core +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
Planets Across Space and Time (PAST). I. Characterizing the Memberships of Galactic Components and Stellar Ages: Revisiting the Kinematic Methods and Applying to Planet Host Stars [PDF]
, 2021 Over 4000 exoplanets have been identified and thousands of candidates are to be confirmed. The relations between the characteristics of these planetary systems and the kinematics, Galactic components, and ages of their host stars have yet to be well ...
Di-Chang Chen +9 more
semanticscholar +1 more source
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
The local and distant Universe: stellar ages and H0 [PDF]
Journal of Cosmology and Astroparticle Physics, 2019 The ages of the oldest stellar objects in our galaxy provide an independent test of the current cosmological model as they give a lower limit to the age of the Universe.
R. Jimenez +4 more
semanticscholar +1 more source
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
doaj +1 more source
The Influence of Atomic Diffusion on Stellar Ages and Chemical Tagging [PDF]
, 2017 In the era of large stellar spectroscopic surveys, there is an emphasis on deriving not only stellar abundances but also the ages for millions of stars.
A. Dotter +3 more
semanticscholar +1 more source
Stellar ages, masses, and radii from asteroseismic modeling are robust to systematic errors in spectroscopy [PDF]
Astronomy & Astrophysics, 2018 Context. The search for twins of the Sun and Earth relies on accurate characterization of stellar and the exoplanetary parameters age, mass, and radius.
E. Bellinger +4 more
semanticscholar +1 more source