The list of possible double and multiple open clusters between galactic longitudes 240 and 270 degrees
arXiv:2107.12036 · doi:10.1134/S1063772921350018
Abstract
This work studies the candidate double and multiple open clusters (OCs) in the galactic sector from l = 240o to l = 270o, which contains the Vela-Puppis star formation region. To do that, we have searched the most recent and complete catalogues of OCs by hand to get an extensive list of 22 groups of OCs involving 80 candidate members. Gaia EDR3 has been used to review some of the candidate OCs and look for new OCs near the candidate groups. Gaia data also permitted filtering out most of the field sources that are not member stars of the OCs. The plotting of combined colour-magnitude diagrams of candidate pairs has allowed, in several cases, endorsing or discarding their link. The most likely systems are formed by OCs less than 0.1 Gyr old, with only one eccentric OC in this respect. No probable system of older OCs has been found. Preliminary estimations of the fraction of known OCs that form part of groups (9.4 to 15%) support the hypothesis that the Galaxy and the Large Magellanic Cloud are similar in this respect. The results indicate that OCs are born in groups like stars are born in OCs.
26 pages, 11 figures, 1 table. Article accepted in Astronomy Reports
References in corpus (14)
- Painting a portrait of the Galactic disc with its stellar clusters
- A catalog of newly identified star clusters in GAIA DR2
- Hunting for open clusters in \textit{Gaia} DR2: new OCs in the Galactic disc
- 3D kinematics and age distribution of the Open Cluster population
- Improving the open cluster census. I. Comparison of clustering algorithms applied to Gaia DR2 data
- A Multi-Band Catalog of 10978 Star Clusters, Associations and Candidates in the Milky Way
- On the current status of open-cluster parameters
- Properties of Star Clusters - II: Scale Height Evolution of Clusters
- Hierarchical star formation in the Milky Way disk
- Uncovering a 260 pc wide, 35 Myr old filamentary relic of star formation
- Search and analysis of blue straggler stars in open clusters
- Collinder 135 and UBC 7: A Physical Pair of Open Clusters
- Small scale star formation as revealed by VVVX galactic cluster candidates
- The nearby Galaxy structure toward the Vela Gum nebula