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Resource Record Summary

Catalog Service:
The Mayrit catalogue
Short name: J/A+A/478/667
IVOA Identifier: ivo://CDS.VizieR/J/A+A/478/667
DOI (Digital Object Identifier): 10.26093/cds/vizier.34780667
Publisher: CDS[+][Pub. ID]
More Info: https://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/478/667
VO Compliance: Level 2: This is a VO-compliant resource.		 Status: active
Registered: 2009 Jan 13 15:30:43Z
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Description


The young sigma Orionis cluster is an indispensable basis for understanding the formation and evolution of stars, brown dwarfs and planetary-mass objects. Our knowledge of its stellar population is, however, incomplete. I present the Mayrit catalogue, that comprises most of the stars and high-mass brown dwarfs of the cluster. The basis of this work is an optical-near infrared correlation between the 2MASS and DENIS catalogues in a circular area of radius 30 arcmin centred on the OB-type binary sigma Ori AB. The analysis is supported on a bibliographic search of confirmed cluster members with features of youth and on additional X-ray, mid-infrared and astrometric data. I list 241 sigma Orionis stars and brown dwarfs with known features of youth, 97 candidate cluster members (40 are new) and 115 back- and foreground sources in the survey area. The 338 cluster members and member candidates constitute the Mayrit catalogue. This catalogue is a suitable input for studying the spatial distribution, multiplicity, properties and frequency of discs and the complete mass function of sigma Orionis.

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under Cooperative Agreement AST0122449 with the Johns Hopkins University
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