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Two New Faint Common Proper Motion Pairs

Published online by Cambridge University Press:  12 April 2016

María Teresa Ruiz  and
José Maza
María Teresa Ruiz
Affiliation:
Departamento de Astronomía, Universidad de Chile
José Maza
Affiliation:
Departamento de Astronomía, Universidad de Chile

Abstract

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Spectrophotometry of the common proper motion pairs ES0439-162/163 and ESO440-55a/55b shows that the first is formed by an mv =18.8 magnetic DQ white dwarf and an mv = 19.8 DC9 white dwarf separated by 23”. ESO440-55a/55b has an mv = 20.2 red dwarf (ST=M5.1) component and a DZ7 white dwarf with mv = 19.3, their angular separation being The proper motion of the pairs is μ=0.38±0.03”/year and μ=0.22±0.04”/year respectively.

Type
Research Article
Information
International Astronomical Union Colloquium , Volume 114: White Dwarfs , 1989 , pp. 126 - 129
Copyright
Copyright © Springer-Verlag 1989

References

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