The ultraviolet spectrum of Beta Ori, B8 IA

Details The ultraviolet spectrum of Beta Ori, B8 IA The ultraviolet spectrum of Beta Ori, B8 IA

Jan 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977a%26as...27....1s&link_type=abstract

Astronomy and Astrophysics Supplement Series, vol. 27, Jan. 1977, p. 1-29. Research supported by the Consiglio Nazionale delle

Astronomy and Astrophysics

Astrophysics

14

Early Stars, Spectrum Analysis, Stellar Spectra, Supergiant Stars, Ultraviolet Spectra, Absorption Spectra, Atomic Spectra, Lyman Alpha Radiation, Molecular Spectra, Spectral Line Width, Tables (Data)

Scientific paper

A Copernicus spectrum of the early-type supergiant Beta Ori, extending from 1010 to 1440 A with 0.2-A resolution and from 1710 to 3215 A with 0.4-A resolution, is described. Some 1137 absorption lines are identified, and equivalent widths and profiles are computed for selected features. It is found that: (1) the Ly-alpha line is the major feature over the entire spectrum; (2) 'metals' are mostly in the first and second state of ionization; and (3) only the resonance lines of Si III and Si IV are markedly blue-shifted by about 180 km/s, but there is no evidence of P Cyg profiles.

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