The ultraviolet spectrum of Eta Carinae

Journal Article · Fri Dec 01 04:00:00 EST 1989 · Astrophysical Journal, Supplement Series; (USA)

DOI:https://doi.org/10.1086/191405· OSTI ID:7058712

Viotti, R; Rossi, L; Cassatella, A; Altamore, A; Baratta, G B ^[1]

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1. CNR, Istituto Astrofisica Spaziale, Frascati (Italy) International Ultraviolet Explorer Observatory, Madrid (Spain) Roma I Universita, Rome (Italy) Osservatorio Astronomico, Rome (Italy)

An atlas of the high-resolution UV spectrum of Eta Car from 1200 to 1974 A and from 2200 to 3230 A is presented, based on IUE observations made between 1978 and 1980. The fluxes and equivalent widths of the emission and absorption features, and the stellar continuum in line-free regions are presented. The profiles displayed by the most intense emission suggest line formation in an asymmetric envelope. Many of the observed features may be explained if Eta Car is an intermediate, possible binary, F-type hypergiant in a short living stage, which holds a massive wind heated by dissipation of mechanical energy. 61 refs.

• OSTI ID: 7058712
• Journal Information: Astrophysical Journal, Supplement Series; (USA), Journal Name: Astrophysical Journal, Supplement Series; (USA) Vol. 71; ISSN APJSA; ISSN 0067-0049
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABSORPTION SPECTRA
ASYMMETRY
BINARY STARS
EMISSION SPECTRA
ENERGY LOSSES
GIANT STARS
LINE WIDTHS
LOSSES
SPECTRA
STAR EVOLUTION
STARS
STELLAR ACTIVITY
STELLAR WINDS
ULTRAVIOLET SPECTRA
VARIABLE STARS