On the Continuum and the Absolute Magnitude of Eta Carinae

Details On the Continuum and the Absolute Magnitude of Eta Carinae On the Continuum and the Absolute Magnitude of Eta Carinae

Nov 1969

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1969ap%26ss...5..323v&link_type=abstract

Astrophysics and Space Science, Volume 5, Issue 3, pp.323-332

Astronomy and Astrophysics

Astrophysics

25

Scientific paper

The excitation temperature, colour excess and continuum of η Car in the visible and near ultraviolet have been determined from the study of the excitation of the ionized iron emission lines. The excitation temperatures of Fe ii and [Fe ii] are about 8000K, value which is very much lower than the mean ionization temperature of the elements in η Car.E B-V is about 1m.1; the absolute visual magnitude is presently -10m.5±1m. From the equivalent widths of the emission lines the true continuum between 1.5 and 3.0 μ-1 has been derived. The correspondingB-V is -0m.14, while the Balmer jump is less than 0m.5. The continuum appears mainly nebular in origin with a strong contribution of the two-photon emission from the 2s-level of hydrogen in the blue.

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