Clues to Substellar Formation: Rotation and the Low-Mass End of the Initial Mass Function
We have monitored S Ori 45, a young, low-mass (20 M j up) brown dwarf of the σ Orionis cluster (˜3 Myr, 352 pc), using optical and near-infrared filters. S Ori 45 (spectral type M8.5) is found to be multi-periodic with a dominant modulation at 2.5 3.5 h, and a short modulation at about 46 min. We ascribe the longer of these modulations to a
Zapatero Osorio, María Rosa et al.
Fecha de publicación:
8
2004