An atlas of theoretical P-Cygni-profiles in early type stars

Details An atlas of theoretical P-Cygni-profiles in early type stars An atlas of theoretical P-Cygni-profiles in early type stars

Nov 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985a%26as...62..339s&link_type=abstract

Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 62, Nov. 1985, p. 339-354.

Astronomy and Astrophysics

Astrophysics

13

Early Stars, Stellar Mass Ejection, Stellar Models, Line Spectra, Photosphere, Radiative Transfer, Stellar Envelopes, Stellar Winds

Scientific paper

The author presents Castor and Lamers' atlas (1979) of correctly calculated P-Cygni-profiles using the comoving frame formalism. The atlas is computed for a wide range of physical input parameters assuming pure scattering in the line and may be applied to resonance lines formed in the winds of early type stars. The author's profiles may be corrected for underlying photospheric absorption lines by means of an improved correction formula. The author shows that systematic errors are caused by the use of the original Castor-Lamers correction formula and that contrary to previous statements the pure emission coming from the envelope is strongly asymmetric.

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