Study of the ultraviolet absorptions in the spectra of DA white dwarfs and ultraviolet spectra of the star HR6560. Semiannual report, 1 July-31 December 1986
Technical Report
·
OSTI ID:6582418
Two projects in conjunction with the International Ultraviolet Explorer Satellite are discussed. These projects were to: (1) study the properties of the H/sub 2/ and H/sub 2/+ quasi-molecular absorption features at lambda lambda 1600 and 1400 in the ultraviolet spectra of the hydrogen-rich DA white dwarfs and to search for additional spectroscopic features in the spectra of these stars; and (2) use the ultraviolet portion of the spectrum of the peculiar rare earth-rich late F type star, HR6560 (HD159870), to establish whether or not the element abundance anomalies are produced in conjunction with its having a white dwarf binary companion. The data show that HR6560 is probably not associated with any hot subluminous or degenerate star.
- Research Organization:
- Dartmouth Coll., Hanover, NH (USA)
- OSTI ID:
- 6582418
- Report Number(s):
- N-87-18473; NASA-CR-180179; NAS-1.26:180179
- Country of Publication:
- United States
- Language:
- English
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