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Increased Multiplicity of 77 Cygni, V815 Herculis, and HD 140122

Published online by Cambridge University Press:  22 February 2018

Francis C. Fekel
Francis C. Fekel*
Affiliation:
Center of Excellence in Information Systems, Tennessee State University, Nashville, TN, USA

Abstract

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High-dispersion spectroscopic observations of 77 Cygni, V815 Herculis, and HD 140122 have resulted in the detection of at least one additional component in each system. The newly identified component of 77 Cyg has a period of 35.48 days. V815 Her is a triple system with periods of 1.810 and 2300 days or 6.3 yr. The two visual binary components of HD 140122 are short-period spectroscopic binaries with periods of 10.879 and 15.770 days.

Resumen

Resumen

Mediante observaciones espectroscópicas de alta dispersión de 77 Cygni, V815 Herculis, and HD 140122 se ha detectado por lo menos una componente adicional en cada sistema. La nueva componente en 77 Cyg tiene un período de 35.48 dias. V815 Her es un sistema triple con períodos de 1.810 y 2300 días, o 6.3 años. Las dos componentes visuales de HD 140122 son a su vez binarias espectroscópicas de corto período, con períodos de 10.879 y 15.770 días, respectivamente.

Keywords

BinariesClose — BinariesSpectroscopic
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. 45 - 48
Copyright
Copyright © Instituto de Astronomia – Mexico 2004

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