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HIPPARCOS First Results in the Double Star Photometry

Published online by Cambridge University Press:  12 April 2016

F. Mignard ,
J.L. Falin  and
M. Froeschlé
F. Mignard
Affiliation:
Observatoire de la Côte d’Azur / CERGA, Av. Copernic, F06130 Grasse, France
J.L. Falin
Affiliation:
Observatoire de la Côte d’Azur / CERGA, Av. Copernic, F06130 Grasse, France
M. Froeschlé
Affiliation:
Observatoire de la Côte d’Azur / CERGA, Av. Copernic, F06130 Grasse, France

Abstract

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In addition to its astrometric capabilities the HIPPARCOS main detector proves to be a good phototometer. The main features of the photometric reduction applied to double stars are outlined. We show how it is possible to discriminate single stars from multiple stars from the photometric signal. Results presented are based on about 16000 stars recognized as non-single, of which 8000 were not known to be double in the HIPPARCOS Input Catalogue. Magnitudes for multiple systems as a whole are derived with a precision usually better than 0.005 mag while the magnitude of each component is recovered up to magnitude difference of 3 mag, but with less accuracy and precision.

Type
Hipparcos First Results
Information
International Astronomical Union Colloquium , Volume 135: Complementary Approaches to Double and Multiple Star Research , 1992 , pp. 421 - 428
Copyright
Copyright © Astronomical Society of the Pacific 1992

References

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