Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986dchn.repts....w&link_type=abstract
Semiannual Report, 1 Jul. - 31 Dec. 1986 Dartmouth Coll., Hanover, NH. Dept. of Physics and Astronomy.
Astronomy and Astrophysics
Astronomy
Companion Stars, Late Stars, Stellar Spectra, Ultraviolet Spectra, White Dwarf Stars, Astronomical Spectroscopy, F Stars, Hydrogen, Iue
Scientific paper
Two projects in conjunction with the International Ultraviolet Explorer Satellite are discussed. These projects were to: (1) study the properties of the H2 and H2+ 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.
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