Spectral observations of Eta Carinae at 4 microns

Details Spectral observations of Eta Carinae at 4 microns Spectral observations of Eta Carinae at 4 microns

Oct 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977apj...217..103a&link_type=abstract

Astrophysical Journal, Part 1, vol. 217, Oct. 1, 1977, p. 103-107. Research supported by the Science Research Council;

Astronomy and Astrophysics

Astrophysics

18

H Lines, Infrared Spectra, Nebulae, Electron Density (Concentration), Emission Spectra, Luminous Intensity, Spatial Distribution, Spectrophotometry, Variable Stars

Scientific paper

Spectral observations of the central region of the Eta Carinae nebula at 4 microns have measured the Brackett-alpha hydrogen recombination-line intensity. The bulk of the line and continuum radiation arises in a small central source which is slightly narrower in the line radiation and is barely resolved by the employed beamwidth of 3.4 arcsec. The continuum radiation is well-fitted by an exponential relation to a distance of 10 arcsec from the central source. The line intensity requires a central source which emits 10 to the 49th power ionizing photons per sec into a region of electron density greater than 1 million per cu cm.

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