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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

Angel, J.R.P., Borra, E., and Landstreet, J.D., 1981, Ap. J. Suppl., 54, 229.Google Scholar
Liebert, J., Angel, J.R.P., Stockman, H.S., and Beaver, E.A., 1987, Ap.J., 225, 181.CrossRefGoogle Scholar
Liebert, J., Wehrse, R., and Green, R.F., 1987, Astron. Astrophys. 175, 173.Google Scholar
Ruiz, M.T., Maza, J., Mendez, R., and Wischnjewsky, M., 1988, “The ESO Messenger” September issue.Google Scholar
Wing, R. and Dean, C.A., 1983, “IAU Colloq. - N°76”, ed. Philip, A.G.D. and Upgren, A.R., pg. 385.Google Scholar