Table · dataset · 2024
Tidal tails of open clusters
Listed in IVOA Registry (Virtual Observatory)
Open clusters that emerged from the star forming regions as gravitationally bound structures are subjected to star evaporation, ejection, and tidal forces throughout the rest of their lives.
Description
Consequently they form tidal tails that can stretch kiloparsecs along the cluster's orbit. Cluster members are typically found by searching for overdensities in some parameter space (positions and velocities or sometimes actions and orbital parameters of stars).
However, this method is not effective in identifying stars located in the tidal tails far from the open cluster cores. We present a probabilistic method for finding distant cluster members without relying on searching for overdensities and apply it to 476 open clusters. First, we simulate the dissolution of a cluster and obtain a probability distribution (likelihood) describing where cluster members are to be found.
Read the rest (2 more)
The distribution of stars from the Gaia DR3 catalogue in high likelihood regions is then compared to the simulated stellar population of the Galaxy to define the membership probability of each star. The survey of cluster members included all stars with a magnitude of G<17.5 and larger clusters with an age of >100Myr within 3kpc from the Sun. We successfully find stars with high membership probabilities in the tidal tails of most clusters, stretching more than a kiloparsec from the cluster cores in some cases.
We analyse the morphological properties of tidal tails, demonstrate how properly normalised membership probabilities aid systematic studies of open clusters and publish a catalogue of stars found in the tidal tails.
Links
Where it is published
- Reference page cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/691/A28 ↗
landing page · from IVOA Registry
Documentation and papers
- ADS 2024A&A...691A..28K ui.adsabs.harvard.edu/abs/2024A%26A...691A..28K ↗
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/691/a28 ↗
catalogue entry · from IVOA Registry
Topics
- Stated by source
- Optical
- From keywords
- Astronomy & Astrophysics
Provenance · 1 source records, 8 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| IVOA Registry (Virtual Observatory) | ivo://cds.vizier/j/a+a/691/a28 | 11 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · IVOA Registry | connector:ivoa_registry@1.0.0 | |
| 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 |