On the energy distribution in Sirius B

Details On the energy distribution in Sirius B On the energy distribution in Sirius B

Sep 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979apj...232l.189b&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 232, Sept. 15, 1979, p. L189-L192.

Astronomy and Astrophysics

Astrophysics

19

Binary Stars, Spectral Energy Distribution, Stellar Spectra, White Dwarf Stars, X Ray Sources, Absorption Spectra, Emission Spectra, Iue, Line Spectra, Low Temperature Environments, Lyman Alpha Radiation

Scientific paper

A spectrum of Sirius B in the wavelength region 1100-1900 A taken with the IUE satellite shows an absolute flux and spectral energy distribution in the continuum in agreement with theoretical white-dwarf models with T(eff) of 26,000 K plus or minus 1000 K for log g equals 8.65 and R equals 5.08 x 10 to the 8th cm. The Lyman-alpha profile is also in agreement with these parameters. No obvious emission lines in the spectrum of Sirius B or A which could indicate the presence of a chromosphere or corona in either of the stars are observed.

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