High resolution observations of the H-alpha profile from Eta CAR

Details High resolution observations of the H-alpha profile from Eta CAR High resolution observations of the H-alpha profile from Eta CAR

Jul 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982a%26a...111..375m&link_type=abstract

Astronomy and Astrophysics, vol. 111, no. 2, July 1982, p. 375, 376.

Astronomy and Astrophysics

Astrophysics

11

H Alpha Line, Spectral Line Width, Stellar Mass Ejection, Stellar Spectra, Ultraviolet Spectra, Variable Stars, High Resolution, Light (Visible Radiation), Spectral Energy Distribution, Stellar Envelopes, Stellar Evolution

Scientific paper

Comparison of a high resolution H-alpha-line profile of Eta Carinae with published UV spectra of the star allows the H-alpha profile to be decomposed in three P-Cygni-like components having widths of about 1 A, 4.5 A, and 14.4 A, corresponding to 45 km/sec, 200 km/sec, and 650 km/sec, respectively. These components can be interpreted in terms of massive shells of matter ejected by the star in the past.

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