hal.structure.identifier	M2A 2020
dc.contributor.author	TARRICQ, Y
hal.structure.identifier	M2A 2020
dc.contributor.author	CASAMIQUELA, L
hal.structure.identifier	M2A 2020
dc.contributor.author	SOUBIRAN, C
dc.date.conference	2019-05-14
dc.description.abstractEn	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.
dc.language.iso	en
dc.subject.en	Gaia
dc.subject.en	open clusters
dc.subject.en	solar neighborhood
dc.title.en	NEARBY OPEN CLUSTERS SHAPE : THREE-DIMENSIONAL GAUSSIAN MIXTURE MODEL AND TWO-DIMENSIONAL DENSITY MAPS
dc.type	Communication dans un congrès
dc.subject.hal	Physique [physics]/Astrophysique [astro-ph]
bordeaux.country	FR
bordeaux.conference.city	Nice
bordeaux.peerReviewed	oui
hal.identifier	hal-03052900
hal.version	1
hal.invited	non
hal.proceedings	non
hal.popular	non
hal.audience	Internationale
hal.origin.link	https://hal.archives-ouvertes.fr//hal-03052900v1
bordeaux.COinS	ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.au=TARRICQ,%20Y&CASAMIQUELA,%20L&SOUBIRAN,%20C&rft.genre=unknown

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NEARBY OPEN CLUSTERS SHAPE : THREE-DIMENSIONAL GAUSSIAN MIXTURE MODEL AND TWO-DIMENSIONAL DENSITY MAPS