English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/213459
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE
Exportar a otros formatos:

DC FieldValueLanguage
dc.contributor.authorSánchez, Néstores_ES
dc.contributor.authorAlfaro, Emilio J.es_ES
dc.contributor.authorLópez-Martínez, Fátimaes_ES
dc.identifier.citationMonthly Notices of the Royal Astronomical Society 495(3): 2882–2893 (2020)es_ES
dc.description.abstractIn this work we improve a previously published method to calculate in a reliable way the radius of an open cluster. The method is based on the behaviour of stars in the proper motion space as the sampling changes in the position space. Here we describe the new version of the method and show its performance and robustness. Additionally, we apply it to a large number of open clusters using data from Gaia DR2 to generate a catalogue of 401 clusters with reliable radius estimations. The range of obtained apparent radii goes from Rc = 1.4 ± 0.1 arcmin (for the cluster FSR 1651) to Rc = 25.5 ± 3.5 arcmin (for NGC 2437). Cluster linear sizes follow very closely a lognormal distribution with a mean characteristic radius of Rc = 3.7 pc, and its high radius tail can be fitted by a power law as N∝R−3.11±0.35c . Additionally, we find that number of members, cluster radius and age follow the relationship Nc∝R1.2±0.1c⋅T−1.9±0.4c where the younger and more extensive the cluster, the more members it presents. The proposed method is not sensitive to low density or irregular spatial distributions of stars and, therefore, is a good alternative or complementary procedure to calculate open cluster radii not having previous information on star memberships.© 2020 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Societyes_ES
dc.description.sponsorshipWe are very grateful to the referee for his/her careful reading of the manuscript and helpful comments and suggestions, which improved this paper. NS and EJA acknowledge support from the Spanish Government Ministerio de Ciencia, Innovacion y Universidades ´ through grant PGC2018-095049-B-C21 and from the State Agency for Research of the Spanish MCIU through the ‘Center of Excellence Severo Ochoa’ award for the Instituto de Astrof´ısica de Andaluc´ıa (SEV-2017-0709). FL-M acknowledges partial support by the Fondos de Inversiones de Teruel (FITE).es_ES
dc.publisherOxford University Presses_ES
dc.relation.isversionofPublisher's versiones_ES
dc.subjectMethods: data analysises_ES
dc.subjectOpen clusters and associations: generales_ES
dc.subjectStars: kinematics and dynamicses_ES
dc.titleA catalogue of open cluster radii determined from Gaia proper motionses_ES
dc.description.peerreviewedPeer reviewedes_ES
dc.contributor.funderMinisterio de Ciencia, Innovación y Universidades (España)es_ES
dc.contributor.funderEuropean Commissiones_ES
dc.contributor.funderAgencia Estatal de Investigación (España)es_ES
dc.contributor.funderFondo de Inversiones de Terueles_ES
oprm.item.hasRevisionno ko 0 false*
Appears in Collections:(IAA) Artículos
Files in This Item:
File Description SizeFormat 
IAA_2020staa1359.pdf1,3 MBAdobe PDFThumbnail
Show simple item record

WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.