The mass and radius of the M dwarf companion to GD 448

Article, Preprint English OPEN
Maxted, P.F.L.; Marsh, T.R.; Moran, C.; Dhillon, V.S.; Hilditch, R.W.;
  • Publisher: Oxford University Press
  • Related identifiers: doi: 10.1046/j.1365-8711.1998.02036.x
  • Subject: Astrophysics
    arxiv: Astrophysics::Galaxy Astrophysics | Astrophysics::Cosmology and Extragalactic Astrophysics | Astrophysics::Earth and Planetary Astrophysics | Astrophysics::Solar and Stellar Astrophysics

We present spectroscopy and photometry of GD 448, a detached white dwarf - M dwarf binary with a period of 2.47h. We find that the NaI 8200A feature is composed of narrow emission lines due to irradiation of the M dwarf by the white dwarf within broad absorption lines t... View more
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