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Observations of pre- and proto-brown dwarfs in nearby clouds: Paving the way to further constraining theories of brown dwarf formation

Lee, Chang Won; Dunham, Michael M.; Palau, Aina +2 more

Brown Dwarfs (BDs) are crucial objects in our understanding of both star and planet formation, as well as in our understanding of what mechanisms shape the lower end of the Initial Mass Function (IMF). However, since the discovery of the first BD in 1995, there is still an unconcluded debate about which is the dominant formation mechanism of these…

Jets from young stars

Ray, T. P.; Ferreira, J.

Jets are ubiquitous in the Universe and are seen from a large number of astrophysical objects including active galactic nuclei, gamma ray bursters, micro-quasars, proto-planetary nebulae, young stars and even brown dwarfs. In every case they seem to be accompanied by an accretion disk and, while the detailed physics may change, it has been suggest…

The episodic and multiscale Galactic Centre

Krabbe, Alfred; Bryant, Aaron

Within the central few hundred parsecs of the Milky Way, extending from longitude l = -1° to 1.5°, lies the Central Molecular Zone of the Galactic Centre. This extraordinary region is defined by a diverse variety of ISM features in numerous stages of evolution. Molecular cloud H₂ volume densities range from 10^3-8 cm^-3