2017AJ....154..200M

Query : 2017AJ....154..200M

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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Number of rows : 6
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 * omi02 Eri Er* 04 15 16.3196189945 -07 39 10.330779018 5.69 5.25 4.43 3.74 3.29 K0V 815 0
2 * omi02 Eri C Er* 04 15 21.5359980886 -07 39 20.694578096   12.85 11.17     M4.5V 220 0
3 * omi02 Eri B WD* 04 15 21.7957181469 -07 39 29.203986789 9.147 9.83 9.53     DA2.9 336 0
4 * alf CMa SB* 06 45 08.91728 -16 42 58.0171 -1.51 -1.46 -1.46 -1.46 -1.43 A0mA1Va 1531 0
5 * alf CMa B WD* 06 45 09.3041925037 -16 43 00.724740067   8.41 8.44     DA1.9 545 1
6 G 24-16 Er* 20 29 48.3179167836 +09 41 20.590506834       12.728   M4.5V 152 0

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