Submillimetre observations of low-mass cloud cores: forming tiny objects in situ

Details Submillimetre observations of low-mass cloud cores: forming tiny objects in situ Submillimetre observations of low-mass cloud cores: forming tiny objects in situ

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005an....326.1044g&link_type=abstract

Astronomische Nachrichten, Vol.326, Issue 10, p.1044-1047

Astronomy and Astrophysics

Astronomy

4

Stars: Formation, Stars: Low-Mass, Brown Dwarfs, Submillimetre

Scientific paper

The origin of very low-mass objects such as brown dwarfs and `isolated planets' is unclear: can they form in-situ from very low-mass cloud cores in a scaled-down version of star formation? Here I discuss methods of detecting and characterising such faint cores using submillimetre-wavelength observations. Some data are presented for the Ophiuchus clouds that strongly suggest there is little division between stars and ultra low-mass objects at the earliest evolutionary stages. Some challenging results have emerged (in the context of current theory), including finding cores of only a few Jupiter masses and a core mass function still rising at the mass detection limit: the implications are briefly discussed.

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