AAS 197, January 2001
Session 83. Compact Objects
Display, Wednesday, January 10, 2001, 9:30am-7:00pm, Exhibit Hall

[Previous] | [Session 83] | [Next]

[83.02] Far Ultraviolet Spectroscopic Explorer Observations of Hot Subdwarf and White Dwarf Stars.

P. Chayer (JHU/UVIC), J.W. Kruk (JHU), FUSE Science Team

One of the Far Ultraviolet Spectroscopic Explorer (FUSE) primary science programs is to study the D/H ratio in a variety of astrophysical environments. To measure this D/H ratio we observe lines of sight toward various FUV sources. A by-product of this investigation is the observation of stars emitting strong FUV radiation. Within the framework of measuring the D/H ratio in the local interstellar medium, we obtained FUSE spectra (905--1187 Å) of the hydrogen-rich white dwarfs G191-B2B and WD2211-495, the helium-rich white dwarf WD1634-573, the hot sdO subdwarf BD+28~4211, and the sdOB subdwarf Feige~110. Photospheric models for these stars are being developed to support the FUSE D/H program. The FUSE spectra of these stars are presented and we report a preliminary abundance analysis of their atmospheres.

This work is based on data obtained for the FUSE Guaranteed Time Team by the NASA-CNES-CSA FUSE mission operated for NASA by the Johns Hopkins University. P. C. is a Canadian representative to the FUSE Project supported by CSA under PWGSC. Financial support to U. S. participants has been provided by NASA contract NAS5-32985.

The author(s) of this abstract have provided an email address for comments about the abstract: chayer@pha.jhu.edu

[Previous] | [Session 83] | [Next]