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Observations of Hipparcos Double Stars with the Wiyn1Telescope

Published online by Cambridge University Press:  22 February 2018

Elliott P. Horch ,
Reed D. Meyer ,
William F. van Altena  and
Meridith MacKnight
Elliott P. Horch
Affiliation:
University of Massachusetts at Dartmouth, MA, USA, email: [email protected] Kitt Peak National Observatory, National Optical Astronomy Observatories, which is operated by the Association of Universities for Research in Astronomy, Inc. (AURA) under cooperative agreement with the National Science Foundation
Reed D. Meyer
Affiliation:
Rochester Institute of Technology, Rochester, NY, USA Kitt Peak National Observatory, National Optical Astronomy Observatories, which is operated by the Association of Universities for Research in Astronomy, Inc. (AURA) under cooperative agreement with the National Science Foundation
William F. van Altena
Affiliation:
Yale University, New Haven, CN, USA Kitt Peak National Observatory, National Optical Astronomy Observatories, which is operated by the Association of Universities for Research in Astronomy, Inc. (AURA) under cooperative agreement with the National Science Foundation
Meridith MacKnight
Affiliation:
University of Massachusetts at Dartmouth, MA, USA, email: [email protected] Kitt Peak National Observatory, National Optical Astronomy Observatories, which is operated by the Association of Universities for Research in Astronomy, Inc. (AURA) under cooperative agreement with the National Science Foundation

Abstract

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A program of follow-up observations of HIPPARCOS Double Stars has been started using the WIYN 3.5-m Telescope at Kitt Peak, Arizona. Observations are made with the recently-completed RYTSI speckle camera, which is capable of determining reliable magnitude differences at various wavelengths down to the diffraction limit of the telescope. Thus in addition to precise relative astrometry, component magnitudes and colors can be obtained in a survey mode for all systems observed. Preliminary results and system capabilities are described. The benefits of a sustained program of observations of the HIPPARCOS Double Stars include populating the mass-luminosity relation with many more points (once the orbital status of these stars is known and orbital parameters are determined in sufficient detail for gravitationally bound pairs), robust tests of stellar evolution calculations in cases where at least one component has evolved off the main sequence, and a more complete picture of the nearby field binary population.

Resumen

Resumen

Se ha iniciado un programa de observaciones de seguimiento para las binarias del Hipparcos usando el telescopio WIYN de 3.5m en Kitt Peak, Arizona. Las observaciones se realizan mediante RYTSI, la cámara de motas recientemente terminada, que es capaz de determinar diferencias de magnitudes confiables a varias longitudes de ondas, y hasta el límite de difracción del telescopio. Así, además de astrometría relativa de precisión, pueden obtenerse magnitudes y colores de las componentes. Se describen los resultados preliminares y la capacidad del equipo. Las ventajas de un programa de observación para las binarias del HIPPARCOS incluyen aumentar el número de puntos en la relación masa-luminosidad (una vez que se conozcan los parámetros orbitales de los pares ligados), obtener pruebas confiables para los cálculos de evolución estelar cuando una de las componentes está fuera de la secuencia principal, así como tener una idea más completa de la población de binarias de campo cercanas.

Keywords

Astrometry — BinariesVisual — TechniquesInterferometric
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. 69 - 70
Copyright
Copyright © Instituto de Astronomia – Mexico 2004

Footnotes

1

The WIYN Observatory is a joint facility of the University of Wisconsin-Madison, Indiana University, Yale University, and the National Optical Astronomy Observatories.

References

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