Spectroscopic age estimates for APOGEE red-giant stars: Precise spatial and kinematic trends with age in the Galactic disc
F Anders, P Gispert, B Ratcliffe, C Chiappini… - Astronomy & …, 2023 - aanda.org
Over the last few years, many studies have found an empirical relationship between the
abundance of a star and its age. Here we estimate spectroscopic stellar ages for 178 825 …
abundance of a star and its age. Here we estimate spectroscopic stellar ages for 178 825 …
The young HD 73583 (TOI-560) planetary system: two 10-M⊕ mini-Neptunes transiting a 500-Myr-old, bright, and active K dwarf
We present the discovery and characterization of two transiting planets observed by TESS in
the light curves of the young and bright (V= 9.67) star HD73583 (TOI-560). We perform an …
the light curves of the young and bright (V= 9.67) star HD73583 (TOI-560). We perform an …
Improved Dynamical Masses for Six Brown Dwarf Companions Using Hipparcos and Gaia EDR3
We present comprehensive orbital analyses and dynamical masses for the substellar
companions Gl 229 B, Gl 758 B, HD 13724 B, HD 19467 B, HD 33632 Ab, and HD 72946 B …
companions Gl 229 B, Gl 758 B, HD 13724 B, HD 19467 B, HD 33632 Ab, and HD 72946 B …
Abundance–age relations with red clump stars in open clusters
L Casamiquela, C Soubiran, P Jofré… - Astronomy & …, 2021 - aanda.org
Context. Precise chemical abundances coupled with reliable ages are key ingredients to
understanding the chemical history of our Galaxy. Open clusters (OCs) are useful for this …
understanding the chemical history of our Galaxy. Open clusters (OCs) are useful for this …
The Gaia-ESO survey: the non-universality of the age–chemical-clocks–metallicity relations in the Galactic disc
Context. In the era of large spectroscopic surveys, massive databases of high-quality spectra
coupled with the products of the Gaia satellite provide tools to outline a new picture of our …
coupled with the products of the Gaia satellite provide tools to outline a new picture of our …
Observational constraints on the origin of the elements – VII. NLTE analysis of Y ii lines in spectra of cool stars and implications for Y as a Galactic chemical clock
N Storm, M Bergemann - Monthly Notices of the Royal …, 2023 - academic.oup.com
Yttrium (Y), a key s-process element, is commonly used in nucleosynthesis studies and as a
Galactic chemical clock when combined with magnesium (Mg). We study the applicability of …
Galactic chemical clock when combined with magnesium (Mg). We study the applicability of …
The Gaia-ESO survey: Age-chemical-clock relations spatially resolved in the Galactic disc
CV Vázquez, L Magrini, G Casali… - Astronomy & …, 2022 - aanda.org
Context. The last decade has seen a revolution in our knowledge of the Galaxy thanks to the
Gaia and asteroseismic space missions and the ground-based spectroscopic surveys. Aims …
Gaia and asteroseismic space missions and the ground-based spectroscopic surveys. Aims …
The Gaia-ESO Survey: a new approach to chemically characterising young open clusters-I. Stellar parameters, and iron-peak, α-, and proton-capture elements
Context. Open clusters are recognised as excellent tracers of Galactic thin-disc properties. At
variance with intermediate-age and old open clusters, for which a significant number of …
variance with intermediate-age and old open clusters, for which a significant number of …
Doppler Constraints on Planetary Companions to Nearby Sun-like Stars: An Archival Radial Velocity Survey of Southern Targets for Proposed NASA Direct Imaging …
Directly imaging temperate rocky planets orbiting nearby, Sun-like stars with a 6 m class
IR/O/UV space telescope, recently dubbed the Habitable Worlds Observatory, is a high …
IR/O/UV space telescope, recently dubbed the Habitable Worlds Observatory, is a high …
On the origin of the Galactic thin and thick discs, their abundance gradients and the diagnostic potential of their abundance ratios
N Prantzos, C Abia, T Chen… - Monthly Notices of …, 2023 - academic.oup.com
Using a semi-analytical model of the evolution of the Milky Way, we show how secular
evolution can create distinct overdensities in the phase space of various properties (eg age …
evolution can create distinct overdensities in the phase space of various properties (eg age …