Barbosa |
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Bastian |
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Blum |
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Brott |
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Caballero |
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Chen |
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Chita |
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Chu |
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Churchwell |
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Corcoran |
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Crowther |
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Damineli et al |
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Damineli |
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Fullerton |
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Gagne |
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Gallagher |
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Garcia |
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Garmany |
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Georgiev |
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Hamann |
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Hillier |
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Howarth |
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Indebetouw |
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Kobulnicky |
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Koenigsberger |
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Lang |
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Leitherer |
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Lennon |
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Levesque |
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Linder |
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Maeder |
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Massa |
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Massey |
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McSwain |
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Moffat |
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Moises |
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Morrell |
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Morris |
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Naze |
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Nieva |
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Olsen |
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Oskinova |
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Owocki |
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Penny |
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Przybilla |
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Skinner |
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Smith |
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Soderberg |
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Teodoro |
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Testor |
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Townsley |
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Vacca |
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Wallerstein |
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Whelan |
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Williams |
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Willis |
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Wolff |
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van den Heuvel |
Analysis of the long-term variations of the spectrum of Eta Carinae
Mairan Teodoro
IAG/USP
Augusto Damineli
IAG/USP
We present the first results of our study on the long-term variations of the spectrum of Eta Carinae. We compared spectra from the last 50 years and noticed that the intensity of some lines (e.g.: He I at 447.1 nm) is not the same at a fixed phase of the orbital motion from cycle to cycle, whereas the high-excitation line of [Ar III] at 713.5 nm do reach the same intensity at roughly the same orbital phase. We intend to make more studies on other high- and low-excitation lines in order to compare their behaviour with the historical light-curve.
