NEARBY OPEN CLUSTERS SHAPE : THREE-DIMENSIONAL GAUSSIAN MIXTURE MODEL AND TWO-DIMENSIONAL DENSITY MAPS
Langue
en
Communication dans un congrès
Ce document a été publié dans
2019-05-14, Nice.
Résumé en anglais
We use new memberships from Gaia DR2 to investigate the shape of the nearest open clusters. For open clusters closer than 250 pc from the Sun, we fit 3D ellipsoids on the spatial distribution of the members. At higher ...Lire la suite >
We use new memberships from Gaia DR2 to investigate the shape of the nearest open clusters. For open clusters closer than 250 pc from the Sun, we fit 3D ellipsoids on the spatial distribution of the members. At higher distances, the radial effect due to the uncertainties on the parallax measurements introduces a strong bias in the spatial distribution of members. Therefore, for more distant open clusters, we compute density maps on the sky to study their spatial properties and search for correlations with age and galactic environments of the clusters.< Réduire
Mots clés en anglais
Gaia
open clusters
solar neighborhood
Origine
Importé de halUnités de recherche