Nicholas Wright n.j.wright@keele.ac.uk
A sextet of clusters in the Vela OB2 region revealed by Gaia
Wright
Authors
Abstract
Using Gaia DR2 data, combined with OmegaCAM ground-based optical photometry from the AD-HOC survey, and detailed Radial Velocity measurements from ESO-Gaia, we analyse in detail a 10 ×5 deg region around the Wolf-Rayet star ?2 Vel, including the previously known clusters Gamma Vel and NGC2547. Using clustering analysis that considers positions, proper motions and parallax, we discover 6 clusters or associations – 4 of which appear new. Analysis of the colour-magnitude diagram for these clusters show that 4 of them formed coevally from the same molecular clouds 10 Myr ago, while NGC 2547 formed together with a newly discovered cluster 30 Myr ago. This study shows the incredible wealth of data provided by Gaia for the study of young stellar clusters.
| Acceptance Date | Aug 6, 2018 |
|---|---|
| Publication Date | Aug 6, 2018 |
| Journal | Monthly Notices of the Royal Astronomical Society: Letters |
| Publisher | Oxford University Press |
| DOI | https://doi.org/10.1093/mnrasl/sly144 |
| Keywords | stars, formation, pre-main sequence, open clusters and associations |
| Publisher URL | http://dx.doi.org/10.1093/mnrasl/sly144 |
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