Time-resolved spectroscopy of the variable brown dwarf Kelu-1
Monthly Notices of the Royal Astronomical Society 341:1 (2003) 239-246
Abstract:
We report the results of observations designed to investigate the spectroscopic signatures of dust clouds on the L2 brown dwarf Kelu-1. Time-resolved medium-resolution spectra show no significant evidence of variability in the dust-sensitive TiO, CrH and FeH bandheads on a time-scale of 1-24 h. We do, however, report periodic variability in the pseudo-equivalent width of Hα consistent with the 1.8-h rotation period previously reported for this object. Near-contemporaneous I-band photometry shows evidence for non-periodic variability at the level of 2 per cent.Periodic variability of the brown dwarf Kelu-1
BROWN DWARFS (2003) 457-458
A mini-survey for variability in early L dwarfs
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 335:4 (2002) 1158-1162
Imaging planets around nearby white dwarfs
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 331:4 (2002) L41-L45
Periodic photometric variability of the brown dwarf Kelu-1
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 332:2 (2002) 361-366