Cool Stars 14 - Submitted Abstract # 127 This version created on 05 October 2006 FUSE Observations of 40 Eri B (and C!) Brian Wood, University of Colorado and JILA We observed the white dwarf 40 Eri B with the Far Ultraviolet Explorer (FUSE) on 2003 December 20 and 2004 August 27. The main purpose of these observations is to detect and measure ISM absorption lines against the far UV continuum of the hot white dwarf in order to obtain abundances for the ISM very near to the Sun, given that 40 Eri lies at a distance of only 5.04 pc. We will report on results of these measurements. However, in the FUSE spectra we also find variable O VI emission lines, which are surely not from 40 Eri B. They must instead be from 40 Eri C, an M4.5 Ve companion to 40 Eri B, which unexpectedly fell within the MDRS aperture during the FUSE observations. We will measure fluxes for these lines and assess their level of variability. ----------------------------------