The 5.5-yr cycle in eta Carinae in the last 50 years

Details The 5.5-yr cycle in eta Carinae in the last 50 years The 5.5-yr cycle in eta Carinae in the last 50 years

Sep 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aspc..332..119d&link_type=abstract

The Fate of the Most Massive Stars, ASP Conference Series, Vol. 332, Proceedings of the conference held 23-28 May, 2004 in Grand

Astronomy and Astrophysics

Astronomy

1

Scientific paper

Line intensities and radial velocities variations were analyzed to check for the stability of the star and circumstellar matter in eta Carinae. It was found that the secondary star is very stable, at least in the last two cycles; the primary star hasn't changed secularly along the last 50 years; and the circumstellar matter in the system has been dissipating at fast rate along the last 15 years. The secular brightening may be due, in part, to such an effect in addition to dust destruction.

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