RETICON observations of the H-alpha P Cygni profiles of Zeta Orionis and Zeta Puppis

Details RETICON observations of the H-alpha P Cygni profiles of Zeta Orionis and Zeta Puppis RETICON observations of the H-alpha P Cygni profiles of Zeta Orionis and Zeta Puppis

Mar 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apj...236..835e&link_type=abstract

Astrophysical Journal, Part 1, vol. 236, Mar. 15, 1980, p. 835-838. Research supported by the University of Texas.

Astronomy and Astrophysics

Astrophysics

6

Electron Scattering, H Alpha Line, O Stars, Stellar Spectra, Stellar Winds, Supergiant Stars, Early Stars, Electromagnetic Scattering, Incoherent Scattering, Stellar Mass Ejection, Stellar Spectrophotometry

Scientific paper

Observations obtained with a modern electronic detector provide line profiles with high photometric precision, good spectral resolution, and a carefully defined wavelength scale. The H-alpha lines in both stars have a P Cygni type profile, with emission visible on both sides of the absorption component. Previously undetected wings are found to extend to more than + or - 1000 km/s. The application of a simple modeling theory indicates that the wings cannot be attributed entirely to redistribution by noncoherent electron scattering, but reflect a smooth velocity law in the accelerating stellar wind.

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