The ultraviolet high-resolution spectrum of Feige 86

Details The ultraviolet high-resolution spectrum of Feige 86 The ultraviolet high-resolution spectrum of Feige 86

Jan 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980a%26a....81l...1h&link_type=abstract

Astronomy and Astrophysics, vol. 81, no. 1-2, Jan. 1980, p. L1, L2. Research supported by the Consiglio Nazionale delle Ricerch

Astronomy and Astrophysics

Astronomy

7

Line Spectra, Stellar Spectra, Ultraviolet Astronomy, Coronas, Far Ultraviolet Radiation, Helium, High Resolution

Scientific paper

The high-resolution far-ultraviolet spectrum of the halo Bp star Feige 86 is studied. The energy distribution gives T(e) between 17000 and 18000 K and log g between 4 and 4.5. 1640 He II is mainly He-3. The resonance lines of NV, CIV, SiIV are present and show three components each: one shortward-shifted by about 1.5 A and one longward-shifted by about 0.4 A. The presence of these high-ionization features suggests the existence of a corona and large mass motions, posing serious problems for the diffusion theory.

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