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2017AJ....154..200M - Astron. J., 154, 200-200 (2017/November-0)

Binary star orbits. V. The nearby white Dwarf/Red dwarf pair 40 Eri BC.

MASON B.D., HARTKOPF W.I. and MILES K.N.

Abstract (from CDS):

A new relative orbit solution with new dynamical masses is determined for the nearby white dwarf-red dwarf pair 40 Eri BC. The period is 230.09 ± 0.68 years. It is predicted to close slowly over the next half-century, getting as close as 1.''32 in early 2066. We determine masses of 0.575 ± 0.018 M☉ for the white dwarf and 0.2041 ± 0.0064 M☉ for the red dwarf companion. The inconsistency of the masses determined by gravitational redshift and dynamical techniques, due to a premature orbit calculation, no longer exists.

Abstract Copyright: © 2017. The American Astronomical Society. All rights reserved.

Journal keyword(s): binaries: general - binaries: visual - stars: individual: 40 Eri BC - techniques: interferometric - techniques: interferometric

VizieR on-line data: <Available at CDS (J/AJ/154/200): table3.dat>

Simbad objects: 6

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