#binary fraction

topicbinary fraction

2 papers · 1 filter

astro-ph.SR2026

Stellar Multiplicity in Open Clusters: Investigating Binary Fractions and Their Relationship with Cluster Properties

Ruan P. Alves, Hektor Monteiro, Wilton S. Dias +1

The paper analyzes binary star fractions and mass‑ratio distributions in 773 open clusters, showing that binary fractions depend on metallicity but not age, and that binaries tend…

astro-ph.SR2026

The Carbon-Dependent Binary Frequency of CEMP-no Stars

John D. Dixon, Terese T. Hansen, Jennifer Marshall +15

The authors monitored radial velocities of 30 CEMP-no stars and combined these data with literature to assess binary frequencies, finding that high‑carbon CEMP-no stars have a sign…