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Two new faint common proper motion pairs

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White Dwarfs

Part of the book series: Lecture Notes in Physics ((LNP,volume 328))

Abstract

Spectrophotometry of the common proper motion pairs ES0439-162/163 and ES0440-55a/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″. ES0440-55a/SSb has an mv=20.2 red dwarf (ST=M5.1) component and a DZ7 white dwarf with mv=19.3, their angular separation being 5.4". The proper 0447 17 motion of the pairs is μ=0.38±0.03″/year and μ=0.22±0.04″/year respectively.

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References

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Author information

Authors and Affiliations

  1. Departamento de Astronomía, Universidad de Chile, USA

    Maria Teresa Ruiz & José Maza

Authors
  1. Maria Teresa Ruiz
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  2. José Maza
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Gary Wegner

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© 1989 Springer-Verlag

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Ruiz, M.T., Maza, J. (1989). Two new faint common proper motion pairs. In: Wegner, G. (eds) White Dwarfs. Lecture Notes in Physics, vol 328. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-51031-1_302

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  • DOI: https://doi.org/10.1007/3-540-51031-1_302

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-51031-4

  • Online ISBN: 978-3-540-46136-4

  • eBook Packages: Springer Book Archive

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