684 citations
- Universidad Nacional de La PlataAR156 papers
- Universidad de Buenos AiresAR81 papers
- Bariloche Atomic CentreAR67 papers
- Universidad Nacional de CórdobaAR57 papers
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7 papers · 1 filter
The diffusion-induced nova scenario. CK Vul and PB 8 as possible observational counterparts
Marcelo M. Miller Bertolami, Leandro G. Althaus, Carlos Olano +1
We propose a scenario for the formation of DA white dwarfs with very thin helium buffers. For these stars we explore the possible occurrence of diffusion-induced CNO- flashes, duri…
The impact of chemical differentiation of white dwarfs on thermonuclear supernovae
Eduardo Bravo, Leandro G. Althaus, Enrique García-Berro +1
Gravitational settling of 22Ne in cooling white dwarfs can affect the outcome of thermonuclear supernovae. We investigate how the supernova energetics and nucleosynthesis are in tu…
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…
Spectroscopic study of the N159/N160 complex in the Large Magellanic Cloud
Cecilia Fariña, Guillermo L. Bosch, Nidia I. Morrell +2
We present a spectroscopic study of the N159/N160 massive-star forming region south of 30 Doradus in the Large Magellanic Cloud, classifying a total of 189 stars in the field of th…
L-band spectra of 13 outbursting Be stars
R. E. Mennickent, B. Sabogal, A. Granada +1
We present new L-band spectra of 13 outbursting Be stars obtained with ISAAC at the ESO Paranal observatory. These stars can be classified in three groups depending on the presence…
Spectroscopic orbits and variations of RS Oph
E. Brandi, C. Quiroga, J. Mikolajewska +2
The aims of our study are to improve the orbital elements of the giant and to derive the spectroscopic orbit for the white dwarf companion. Spectral variations related to the 2006…