PG 1346+082 - An interacting binary white dwarf systemPG 1346+082 is both a photometric and a spectroscopic variable, spanning the B-magnitude range 13.6-17.2. High-speed photometric data reveal rapid flickering in the low-state light curve. The system also shows spectroscopic variations, displaying broad shallow He I absorption lines at maximum light and a weak emission feature at He I (4471 A) at minimum light. Hydrogen lines are conspicuous by their absence. Is is concluded that PG 1346+082 is an interacting binary white dwarf system. Furthermore, because continuum fits to IUE high-state data suggest temperatures consistent with membership in the DB white dwarf instability strip, it is suggested that some of the photometric variations may arise from pulsations.
Document ID
19880048390
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Wood, M. A. (Texas Univ. Austin, TX, United States)
Winget, D. E. (Texas Univ. Austin, TX, United States)
Nather, R. E. (Texas, University; McDonald Observatory, Austin, United States)
Liebert, James (Arizona, University; Steward Observatory, Tucson, United States)
Wesemael, F. (Montreal, Universite Montreal, Canada)