5 papers
A critical analysis of main-sequence fitting in open clusters to derive the helium-to-metal enrichment ratio
G. Valle, N. Ricci, M. Dell'Omodarme +3
We aim to investigate the feasibility of accurately determining the helium-to-metal enrichment ratio for open clusters using Gaia DR3 photometry. To test the reliability…
Constraining the helium-to-metal enrichment ratio from nearby field stars using Gaia DR3 photometry
N. Ricci, G. Valle, M. Dell'Omodarme +2
We investigate the feasibility of accurately determining the helium-to-metal enrichment ratio, , from Gaia DR3 photometry for nearby low-mass main sequence field stars. We…
Testing the asteroseismic estimates of stellar radii with surface brightness-colour relations and {\it Gaia} DR3 parallaxes. III. Main-sequence stars
G. Valle, M. Dell'Omodarme, P. G. Prada Moroni +1
We compare the radii derived from the asteroseismic scaling relations with those from surface brightness-colour relations (SBCRs) combined with the Gaia DR3 parallaxes for main-seq…
The role of stellar model input in correcting the asteroseismic scaling relations. Red giant branch models
G. Valle, M. Dell'Omodarme, P. G. Prada Moroni +1
This study investigates the variability of the theoretical correction factor, , used in red giant branch (RGB) scaling relations, arising from different assumptions in st…
Tests and calibrations of stellar models with two triply eclipsing triple systems
G. Valle, M. Dell'Omodarme, P. G. Prada Moroni +1
We investigated the possibility of using two recently characterised triply eclipsing triple systems to constrain stellar model parameters. We specifically focused on evaluating the…