19,880 research outputs found
Stars and brown dwarfs, spatial distribution, multiplicity, X-rays, discs, and the complete mass function of the sigma Orionis cluster
The young sigma Orionis cluster in the Orion Belt is an incomparable site for
studying the formation and evolution of high-mass, solar-like, and low-mass
stars, brown dwarfs, and substellar objects below the deuterium burning mass
limit. The first version of the Mayrit catalogue was a thorough data
compilation of cluster members and candidates, which is regularly used by many
authors of different disciplines. I show two new applications of the catalogue
and advance preliminar results on very wide binarity and the initial mass
function from 18 to 0.035 Msol in sigma Orionis. The making-up of a new version
of the Mayrit catalogue with additional useful data is in progress.Comment: 15th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun
ASP Conference Series, proceedings of the conference held 21-25 July, 2008,
at the University of St. Andrews, St. Andrews, Scotland, UK. Edited by Eric
Stempels. Poster #N3
Strangeness on the nucleon
Observables from parity violation in elastic electron-nucleon scattering and
neutral current quasi-elastic neutrino-nucleus scattering are employed as tools
to improve the current knowledge on the strangeness content in the nucleon.Comment: Proceedings of International Scientific Meeting on Nuclear Physics,
9-13th September 2012. La R\'abida, Huelva, Spai
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