ESO 439-162/163 - A common proper motion binary formed by a magnetic DQ and a DC type white dwarf

Ruiz, Maria Teresa; Maza, Jose

Abstract

In the course of a search for faint large proper motion stars, a common proper motion pair was identified having a μ = 0arcsec.38±0arcsec.03 yr-1. The stars are separeted by 23arcsec and have apparent visual magnitudes 18.77 and 19.84, respectively. Spectrophotometry of the stars established that the fainter component is a cold (≡4000K) DC white dwarf, while the brighter one is a magnetic white dwarf with strong Swan bands of C2 shifted and broadened by a ≡108G magnetic field.

Más información

Título de la Revista: The Astrophysical Journal
Volumen: 335
Número: 2
Editorial: IOP Publishing
Fecha de publicación: 1988
Página de inicio: L15
Página final: L17
DOI:

10.1086/185329