Skip navigation
Skip navigation

Multidimensional Bayesian membership analysis of the Sco OB2 moving group

Rizzuto, Aaron C.; Robertson, James G; Ireland, Michael

Description

We present a new high-mass membership of the nearby Sco OB2 association based on Hipparcos positions, proper motions and parallaxes, and radial velocities taken from the 2nd Catalogue of Radial Velocities with Astrometric Data (CRVAD-2). The Bayesian membership selection method developed makes no distinction between subgroups of Sco OB2 and utilizes linear models in calculation of membership probabilities. We select 436 members, 88 of which are new members not included in previous membership...[Show more]

dc.contributor.authorRizzuto, Aaron C.
dc.contributor.authorRobertson, James G
dc.contributor.authorIreland, Michael
dc.date.accessioned2015-12-10T23:22:58Z
dc.identifier.issn0035-8711
dc.identifier.urihttp://hdl.handle.net/1885/66744
dc.description.abstractWe present a new high-mass membership of the nearby Sco OB2 association based on Hipparcos positions, proper motions and parallaxes, and radial velocities taken from the 2nd Catalogue of Radial Velocities with Astrometric Data (CRVAD-2). The Bayesian membership selection method developed makes no distinction between subgroups of Sco OB2 and utilizes linear models in calculation of membership probabilities. We select 436 members, 88 of which are new members not included in previous membership selections. We include the classical non-members α-Cru and β-Cru as new members as well as the pre-main-sequence stars HIP 79080 and 79081. We also show that the association is well mixed over distances of 8° on the sky, and hence no determination can be made as to the formation process of the entire association.
dc.publisherBlackwell Publishing Ltd
dc.rightsAuthor/s retain copyright
dc.sourceMonthly Notices of the Royal Astronomical Society
dc.subjectKeywords: Methods: statistical; Open clusters and associations: individual: Sco-Cen; Stars: early-type; Stars: kinematics and dynamics
dc.titleMultidimensional Bayesian membership analysis of the Sco OB2 moving group
dc.typeJournal article
local.description.notesImported from ARIES
local.identifier.citationvolume416
dc.date.issued2011
local.identifier.absfor020104 - Galactic Astronomy
local.identifier.ariespublicationU3488905xPUB1336
local.type.statusPublished Version
local.contributor.affiliationRizzuto, A C, University of Sydney
local.contributor.affiliationIreland, Michael, College of Physical and Mathematical Sciences, ANU
local.contributor.affiliationRobertson, James G, University of Sydney
local.bibliographicCitation.issue4
local.bibliographicCitation.startpage3108
local.bibliographicCitation.lastpage3117
local.identifier.doi10.1111/j.1365-2966.2011.19256.x
dc.date.updated2016-02-24T09:59:14Z
local.identifier.scopusID2-s2.0-80052963912
dcterms.accessRightsOpen Access
CollectionsANU Research Publications

Download

File Description SizeFormat Image
01_Rizzuto_Multidimensional_Bayesian_2011.pdf748.56 kBAdobe PDF


Items in Open Research are protected by copyright, with all rights reserved, unless otherwise indicated.

Updated:  19 May 2020/ Responsible Officer:  University Librarian/ Page Contact:  Library Systems & Web Coordinator