Resolved binary stars in Pleiades

DOI

The Pleiades is the most prominent open star cluster visible from Earth and an important benchmark for simple stellar populations unified by common origin, age, and distance. Binary stars are its essential ingredient, yet their contribution remains uncertain due to heavy observational biases. A resolved multiplicity survey was conducted for a magnitude-limited G 4% are successfully resolved. We found that 10% of Pleiades stars have a companion with a mass ratio q>0.5 within the projected separation of 270.55) may imprint the transition from hard to soft binaries regime at the early stages of cluster evolution. The total binary fraction for q>0.5 systems is extrapolated to be around 25%.

Cone search capability for table J/AJ/169/145/table2 (List of resolved Gaia DR3 systems in Pleiades)

Cone search capability for table J/AJ/169/145/table3 (List of speckle-resolved systems in Pleiades)

Cone search capability for table J/AJ/169/145/table5 (Observations of speckle-resolved Pleiades Stars)

Cone search capability for table J/AJ/169/145/table6 (Detection limits for Pleiades stars)

Identifier
DOI http://doi.org/10.26093/cds/vizier.51690145
Source https://dc.g-vo.org/rr/q/lp/custom/CDS.VizieR/J/AJ/169/145
Related Identifier https://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/169/145
Related Identifier https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/169/145
Metadata Access http://dc.g-vo.org/rr/q/pmh/pubreg.xml?verb=GetRecord&metadataPrefix=oai_b2find&identifier=ivo://CDS.VizieR/J/AJ/169/145
Provenance
Creator Chulkov D.; Strakhov I.; Safonov B.
Publisher CDS
Publication Year 2025
Rights https://cds.unistra.fr/vizier-org/licences_vizier.html
OpenAccess true
Contact CDS support team <cds-question(at)unistra.fr>
Representation
Resource Type Dataset; AstroObjects
Discipline Astrophysics and Astronomy; Natural Sciences; Observational Astronomy; Physics; Stellar Astronomy