Table · dataset · 2023
Multiplicity fractions in Gaia open clusters
Listed in IVOA Registry (Virtual Observatory)
Description
In this study we provide a large homogeneous catalogue of multiplicity fractions in open clusters, including the unresolved and total (close- binary) multiplicity fractions of main-sequence systems with mass ratio larger than 0.6^+0.05^_-0.15_ for 202 open clusters in the extended solar neighbourhood (closer than 1.5kpc from the Sun). The unresolved multiplicity fractions are estimated applying a flexible mixture model to the observed Gaia colour-magnitude diagrams.
Then we use custom Gaia simulations to account for the resolved systems and derive the total multiplicity fractions. The studied open clusters have ages between 6.6Myr and 3.0Gyr (146 are older than 50Myr and their member lists are taken from Tarricq et al. (2022A&A...659A..59T, Cat. J/A+A/659/A59), while the remaining 56 are younger than 50Myr and their member lists are taken from Cantat-Gaudin et al. (2020A&A...640A...1C, Cat.
Read the rest (3 more)
J/A+A/640/A1). Their total high-mass-ratio multiplicity fractions range between 6% and 80%, with a median of 18%. The multiplicity fractions increase with the mass of the primary star, as expected.
The average multiplicity fraction per cluster displays an overall decreasing trend with the open cluster age up to ages about 100Myr, above which the trend increases. Our simulations show that most of this trend is caused by complex selection effects (introduced by the mass dependence of the multiplicity fraction and the magnitude limit of our sample). Furthermore, the multiplicity fraction is not significantly correlated with the clusters' position in the Galaxy.
The spread in multiplicity fraction decreases significantly with the number of cluster members (used as a proxy for cluster mass). We also find that the multiplicity fraction decreases with metallicity, in line with recent studies using field stars.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/675/A89 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2023A&A...675A..89D ui.adsabs.harvard.edu/abs/2023A%26A...675A..89D ↗
publication · from IVOA Registry
Catalogue records · 2
- VOResource record dc.g-vo.org/oai.xml?verb=GetRecord&metadataPrefix=ivo_vor&identifier=ivo%3… ↗
metadata API · from IVOA Registry
- Registry record (GAVO) dc.g-vo.org/I/cds.vizier/j/a%2Ba/675/a89 ↗
catalogue entry · from IVOA Registry
Topics
- Stated by source
- Optical
- From keywords
- Astronomy & Astrophysics
- Inferred from text
- Astronomical sciences 74%
Provenance · 1 source records, 9 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/a+a/675/a89 | 11 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[field].anzsrc:group:5101 | enrichment · IVOA Registry | taxonomy-embedding@1.1.0 | title+keywords+description (74%) |
| concepts[field].local:field:astronomy | mapping · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| concepts[modality].ivoa_waveband:optical | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| description | source · IVOA Registry | connector:ivoa_registry@1.0.0 | rr.resource.res_description |
| license_text | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| publication_date | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| title | source · IVOA Registry | connector:ivoa_registry@1.0.0 | rr.resource.res_title |
| updated_date | source · IVOA Registry | connector:ivoa_registry@1.0.0 |