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The Distribution of Separations of DMSA Hipparcos Catalogue

Published online by Cambridge University Press:  22 February 2018

J.F. Ling ,
P. Magdalena  and
C. Prieto
J.F. Ling
Affiliation:
Observatorio Astronómico R. M. Aller, Universidade de Santiago de Compostela, Santiago de Compostela, Spain, email: oafana@usc.es Dpto. Matemática Aplicada, Universidade de Santiago de Compostela, Santiago de Compostela, Spain
P. Magdalena
Affiliation:
Observatorio Astronómico R. M. Aller, Universidade de Santiago de Compostela, Santiago de Compostela, Spain, email: oafana@usc.es Dpto. Matemática Aplicada II, Universidade de Vigo, Vigo, Spain
C. Prieto
Affiliation:
Observatorio Astronómico R. M. Aller, Universidade de Santiago de Compostela, Santiago de Compostela, Spain, email: oafana@usc.es Dpto. Matemática Aplicada II, Universidade de Vigo, Vigo, Spain

Abstract

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We have constructed volume-limited samples of wide binaries in the Hipparcos Catalogue Double and Multiple Systems Annex (DMSA, Section C), out to distances of 100 pc and 200 pc. We study the distribution of linear separations for these samples of binaries. We find that they closely follow Öpik’s distribution in the interval of separations between about 10 and 800 AU (for the 100 pc sample), and between 15 and 1400 AU (for the 200 pc sample)

Resumen

Resumen

Se han construído muestras de volumen limitado para las binarias abiertas del Anexo de Estrellas Dobles y Múltiples del Catálogo Hipparcos (DMSA, Sección C) hasta distancias de 100 pc y 200 pc. Hemos estudiado la distribución de las separaciones lineales para dichas muestras. Se ha encontrado que se ajustan a una distribución muy próxima a la distribución de Öpik para separaciones comprendidas entre 10 y 800 UA (muestra de 100 pe) y entre 15 y 1400 UA (muestra de 200 pc).

Keywords

BinariesGeneral
Type
Observational properties and Statistics of Binary Stars in the Field
Information
International Astronomical Union Colloquium , Volume 191: The Environment and Evolution of Double and Multiple Stars , August 2004 , pp. 77 - 78
Copyright
Copyright © Instituto de Astronomia – Mexico 2004

References

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