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Symposium 241

Abstract details

News from bulges hosted by low surface brightness galaxies
Gaspar Galaz, Ivan Lacerna, Alvaro Villalobos, Leopoldo Infante, Carlos Donzelli, Lorenzo Morelli

I will present new results on stellar populations of bulges of spiral galaxies, from optical and near-IR data (images and spectra). In particular, we analyze a sample of bulges hosted by low surface brightness galaxies (LSBs). Correlation between metallicity, scale lengths of disks and bulges, and HI content are reported, supporting the bulge secular evolution hypothesis, as well as systematics between the derived evolutionaty parameters of the embedded stellar populations. Using spectra of moderate resolution, we also investigate the stellar histories of bulges using Lick indices and recent alpha-enhancements models.

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