A mini-survey for variability in early L dwarfs.

Authors :: Clarke, F. J.
Oppenheimer, B. R.
Tinney, C. G.
Source :: Monthly Notices of the Royal Astronomical Society; 10/1/2002, Vol. 335 Issue 4, p1158-1162, 5p
Publication Year :: 2002
Abstract: Abstract We report differential I-band photometry of four early L dwarfs, obtained to study variability. We detect variability on a time-scale of hours in two objects, 2MASS 0746425+200032 (at a level of 0.007 mag = 6.5σ) and 2MASS 1108307+683017 (0.012 mag; 5σ). We also place upper limits of 0.02 mag (1σ) on the variability of two others. [ABSTRACT FROM AUTHOR]