Eventos

En esta plática se presentan modelos teóricos de los eventos
eruptivos de 1840 (la gran erupción) y de 1890 (la
menor erupción) de la estrella masiva Eta Car. Las
nebulosas bipolares en torno a la estrella se formaron de la

I will present a review of maser emission in evolved stars from the
asymptotic giant branch (AGB) to planetary nebulae (PNe). The
circumstellar envelopes of oxygen-rich evolved stars provide optimal
conditions to pump different species of masers, emitting at radio

Dwarf spheroidal galaxies are key objects in the current
cosmological paradigm: first, they are the least luminous galaxies, likely
signaling the minimum halo mass at which gas can be accreted and converted

It is widely accepted that galaxy mergers can have a significant effect
on galaxy properties and may be an important part of galaxy evolution.
Enhanced star formation is one frequently observed property of (gas

I: Early r-process enrichment in the halo: Process and implications

Periodic patterns are not expected to be found in the frequency spectra of delta-Scuti stars, as in solar-like pulsators. However, some efforts have been carried out in order to find any signal of periodicity in this type of stars (Handler et al., 1997; Breger et al., 1999, 2009).