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173 papers
Towards breaking the degeneracy between stellar ages and unresolved multiplicity
Friedrich Anders, Anna B. A. Queiroz, Sagar Malhotra +2
Stellar age is the central desirable parameter we need to disentangle different Galactic formation scenarios. Nevertheless, no stellar age dating method is completely model-indepen…
Chemical abundances of the young inner-disk open cluster NGC 6705 observed by APOGEE: sodium-rich and not -enhanced
V. Loaiza-Tacuri, K. Cunha, D. Souto +19
Previous results in the literature have found the young inner-disk open cluster NGC 6705 to be mildly -enhanced. We examined this possibility via an independent chemical abundan…
Titans metal-poor reference stars II. Red giants and CEMP stars
Riano E. Giribaldi, Sophie Van Eck, Thibault Merle +6
Representative samples of F-, G-, K-type stars located out of the Solar Neighbourhood has started to be available in spectroscopic surveys. The fraction of metal-poor ([Fe/H]~$\les…
The evolution of the Milky Way's thin disc radial metallicity gradient with K2 asteroseismic ages
Emma Willett, Andrea Miglio, J. Ted Mackereth +8
The radial metallicity distribution of the Milky Way's disc is an important observational constraint for models of the formation and evolution of our Galaxy. It informs our underst…
Galactic ArchaeoLogIcaL ExcavatiOns (GALILEO) II. t-SNE Portrait of Local Fossil Relics and Structures
Mario Ortigoza-Urdaneta, Katherine Vieira, José G. Fernández-Trincado +7
Based on high-quality APOGEE DR17 and Gaia DR3 data for 1,742 red giants stars within 5 kpc of the Sun and not rotating with the Galactic disc ( 100 km s), we use the…
Beyond Gaia DR3: Tracing the [/M]-[M/H] bimodality from the inner to the outer Milky Way disc with Gaia-RVS and convolutional neural networks
G. Guiglion, S. Nepal, C. Chiappini +17
In June 2022, Gaia DR3 has provided the astronomy community with about one million spectra from the Radial Velocity Spectrometer (RVS) covering the CaII triplet region. However, on…