Ultraviolet spectrophotometry of Sirius from Gemini 12

Details Ultraviolet spectrophotometry of Sirius from Gemini 12 Ultraviolet spectrophotometry of Sirius from Gemini 12

Sep 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974apj...192..615s&link_type=abstract

Astrophysical Journal, vol. 192, Sept. 15, 1974, pt. 1, p. 615-621.

Astronomy and Astrophysics

Astronomy

2

Satellite Observation, Spectral Energy Distribution, Stellar Spectrophotometry, Ultraviolet Spectroscopy, A Stars, Atmospheric Models, Gemini 12 Flight, Line Spectra, Magnesium, Metal Ions, Spaceborne Astronomy, Spectral Resolution

Scientific paper

The spectral energy distribution of Sirius between 2500 and 3700 A at a resolution of 7 A is obtained from plates taken on Gemini 12. The agreement with other observations and the most recent line-blanketed model atmospheres is good. The equivalent width of the Mg II doublet near 2800 A is 6.0 A, if the continuum level is represented by regions near 2650 and 2910 A. This is consistent with expectations for a hot Am star and implies line blocking of up to 15% in this wavelength region.

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