The ultraviolet absorption by the photoionisation spectrum of Fe I in AP stars

Details The ultraviolet absorption by the photoionisation spectrum of Fe I in AP stars The ultraviolet absorption by the photoionisation spectrum of Fe I in AP stars

Sep 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980a%26a....89...22j&link_type=abstract

Astronomy and Astrophysics, vol. 89, no. 1-2, Sept. 1980, p. 22-25.

Astronomy and Astrophysics

Astrophysics

6

A Stars, Iron, Photoionization, Stellar Spectra, Ultraviolet Absorption, Abundance, Autoionization, Cool Stars, Magnetic Stars, Metal Ions, Radiant Flux Density, Stellar Atmospheres, Stellar Temperature

Scientific paper

The autoionization spectrum of Fe I is shown to be a major source of
opacity between 1300 and 1450 A in stellar spectra. The strength of the
absorption is prominent in cool stars and naturally in cool Ap stars
where Fe is overabundant. When the Fe abundance is increased by factor
100, the feature could appear for temperatures as large as 11,000 K.

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