Spectral energy distribution for the wave-number interval 1/0.93 micron to 1/3.03 microns for stars hotter than the sun

Details Spectral energy distribution for the wave-number interval 1/0.93 micron to 1/3.03 microns for stars hotter than the sun Spectral energy distribution for the wave-number interval 1/0.93 micron to 1/3.03 microns for stars hotter than the sun

Jul 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...163..159a&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 163, no. 1-2, July 1986, p. 159-173.

Astronomy and Astrophysics

Astrophysics

Early Stars, Hot Stars, Spectral Energy Distribution, Stellar Spectra, Continuous Spectra, Gradients, Interstellar Extinction, O Stars, Spectrum Analysis, Stellar Luminosity

Scientific paper

The spectral energy distribution of stars of early and intermediate spectral type has been investigated in terms of spectral gradients. Observational data on stellar energy distribution are taken from recent catalogs of absolutely calibrated spectrophotometric data. For the stars of early spectral type these data refer to the true stellar continuum, for stars of intermediate type to an apparent but well-defined continuum. A set of six gradient intervals covers the wave-number range from 1/0.93 micron to 1/3.03 microns. The spectral-type range that can be covered is from 05 to G0. For later spectral types the definitiion of the continuum rapidly gets doubtful. All normal luminosity classes, from V to I, have been included. Effects of interstellar absorption can readily be eliminated. As a result, spectral energy distributions in terms of spectral gradients can be presented for all normal stars hotter than the sun. Relations with spectral type and with luminosity class are tight and well-defined. The spectral-type relations are similar for stars of luminosity classes V, IV, and III, whereas supergiant stars deviate significantly.

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