Abstract
This proceeding summarizes the talk of the awardee of the Spanish Astronomical Society award to the best Spanish thesis in Astronomy and Astrophysics in the two-year period 2006–2007. The thesis required a tremendous observational effort and covered many different topics related to brown dwarfs and exoplanets, such as the study of the mass function in the substellar domain of the young σ Orionis cluster down to a few Jupiter masses, the relation between the cluster stellar and substellar populations, the accretion discs in cluster brown dwarfs, the frequency of very low-mass companions to nearby young stars at intermediate and wide separations, or the detectability of Earth-like planets in habitable zones around ultracool (L- and T-type) dwarfs in the solar neighborhood.
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Acknowledgements
I thank R. Rebolo and V. J. S. Béjar for helpful comments an innumerable individuals and groups for their friendship and assistance during my PhD. Especial gratitude is for uKi and m4m4. Most of the thesis research was conducted during my residence at the Instituto de Astrofísica de Canarias. Partial financial support was provided by a number of projects of the Spanish Ministerio Educación y Ciencia, Ministerio de Ciencia y Tecnología, Comunidad Autónoma de Madrid, Universidad Complutense de Madrid, Spanish Virtual Observatory, and European Social Fund.
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Caballero, J.A. (2010). Formation, Evolution and Multiplicity of Brown Dwarfs and Giant Exoplanets. In: Diego, J., Goicoechea, L., González-Serrano, J., Gorgas, J. (eds) Highlights of Spanish Astrophysics V. Astrophysics and Space Science Proceedings. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-11250-8_7
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