Rotation and variability of young very low mass objects

Details Rotation and variability of young very low mass objects Rotation and variability of young very low mass objects

2005-08-23

arxiv.org/abs/astro-ph/0508500v2

Astronomy and Astrophysics

Astrophysics

4 pages, 4 figures, proceedings for the workshop "Ultralow-mass star formation and evolution", to be published in AN (revised

Scientific paper

10.1002/asna.200510437

Variability studies are an important tool to investigate key properties of stars and brown dwarfs. From photometric monitoring we are able to obtain information about rotation and magnetic activity, which are expected to change in the mass range below 0.3 solar masses, since these fully convective objects cannot host a solar-type dynamo. On the other hand, spectroscopic variability information can be used to obtain a detailed view on the accretion process in very young objects. In this paper, we report about our observational efforts to analyse the variability and rotational evolution of young brown dwarfs and very low mass stars.

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