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Roman Early-Definition Astrophysics Survey Opportunity: Galactic Roman Infrared Plane Survey (GRIPS)
Roberta Paladini, Catherine Zucker, Robert Benjamin +67
A wide-field near-infrared survey of the Galactic disk and bulge/bar(s) is supported by a large representation of the community of Galactic astronomers. The combination of sensitiv…
Stellar spots cause measurable variations in atmospheric metallicity
Tanner A. Wilson, Andrew R. Casey
To accurately measure a star's atmospheric parameters and chemical abundances, it is crucial to have high-quality spectra. Analysing the detailed chemical abundances of groups of s…
Many Roads Lead to Lithium: Formation Pathways For Lithium-Rich Red Giants
Maryum Sayeed, Melissa K. Ness, Benjamin T. Montet +8
Stellar models predict that lithium (Li) inside a star is destroyed during the first dredge-up phase, yet 1.2% of red giant stars are Li-rich. We aim to uncover possible origins of…
The Gaia-ESO Survey: Empirical estimates of stellar ages from lithium equivalent widths (EAGLES)
R. D. Jeffries, R. J. Jackson, Nicholas J. Wright +17
We present an empirical model of age-dependent photospheric lithium depletion, calibrated using a large, homogeneously-analysed sample of 6200 stars in 52 open clusters, with ages…
The Gaia-ESO Survey: homogenisation of stellar parameters and elemental abundances
A. Hourihane, P. Francois, C. C. Worley +59
The Gaia-ESO Survey is a public spectroscopic survey that has targeted stars covering all major components of the Milky Way from the end of 2011 to 2018, delivering i…
Estimating the selection function of Gaia DR3 sub-samples
A. Castro-Ginard, A. G. A. Brown, Z. Kostrzewa-Rutkowska +9
Understanding which sources are present in an astronomical catalogue and which are not is crucial for the accurate interpretation of astronomical data. In particular, for the multi…