On the origin of brown dwarfs and free-floating planetary-mass objects

• Published in: Monthly notices of the Royal Astronomical Society Vol. 346; no. 2; pp. 369 - 380
• Main Authors: Kroupa, Pavel, Bouvier, Jerome
• Format: Journal Article
• Language: English
• Published: Oxford, UK Blackwell Science Ltd 01.12.2003
• Subjects: binaries: general; brown dwarfs; Galaxy: stellar content; open clusters and associations: general; stars: formation; stars: low-mass; stars: low‐mass, brown dwarfs

Briceno et al. report a significantly smaller number of brown dwarfs (BDs) per star in the Taurus–Auriga (TA) pre-main-sequence stellar groups than in the central region of the Orion Nebula cluster (ONC). Also, BDs have binary properties that are not compatible with a star-like formation history. It...