15 papers
Stellar masses and ages in Gaia Data Release 4 from the Final Luminosity Age Mass Estimator algorithm
Orlagh L. Creevey, Laia Casamiquela, Yveline Lebreton +23
The masses and ages of stars are key quantities for understanding exoplanetary, stellar, and galactic evolution. In the context of Gaia, these parameters provide insights into the…
The impact of the white dwarf initial-final mass relation on star clusters' ages inferred from their cooling sequence
Maurizio Salaris, Santi Cassisi, Luigi R. Bedin
We have investigated and quantified how the choice of the white dwarf (WD) initial-final mass relation (IFMRs) affects the age determination of star clusters from the luminosity fu…
The Hubble Missing Globular Clusters Survey IV. Ultra-faint compact satellites of the Milky Way. The case of Koposov 2
M. Bellazzini, R. Pascale, E. Dodd +16
In the last decades a number of extremely faint and compact Galactic satellites (Ultra Faint Compact Satellites; UFCS) have been discovered by large panoramic surveys. Their nature…
The Hubble Missing Globular Cluster Survey. III. Astro-photometric catalogs, artificial-star tests, and improved absolute proper motions
M. Libralato, A. Bellini, D. Massari +17
The Hubble Missing Globular Cluster Survey (MGCS) has taken one of the last opportunities to complete the census of Galactic globular clusters (GCs) started by past Hubble Space Te…
Probing the IMF in the Early Universe -- Direct measurements in the Boötes I UFD with JWST/NIRCam
Keyi Ding, Mario Gennaro, Roberto J. Avila +20
The dependence of the stellar initial mass function (IMF) on star-formation environment, particularly at low metallicities and high redshifts, remains poorly constrained. Ultra-fai…
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…