3 papers
astro-ph.SR2009★ 22 cited
The Eta Carinae optical 2009.0 event, a new "eclipse-like" phenomenon
E. Fernandez-Lajus, C. Farina, J. P. Calderon +6
The periodic events occurring in Eta Carinae have been widely monitored during the last three 5.5-year cycles. The last one recently occurred in January 2009 and more exhaustive ob…
astro-ph2008★ 27 cited
Long-Term Optical Monitoring of Eta Carinae. Multiband light curves for a complete orbital period
E. Fernandez-Lajus, C. Farina, A. F. Torres +8
The periodicity of 5.5 years for some observational events occurring in Eta Carinae manifests itself across a large wavelength range and has been associated with its binary nature.…
astro-ph2007★ 31 cited
Fundamental Parameters of He-Weak and He-Strong Stars
L. S. Cidale, M. L. Arias, A. F. Torres +3
We carried out low resolution spectroscopic observations in the wavelength range 3400-4700 A of 20 He-weak and 8 He-strong stars to determine their fundamental parameters by means…