A mini-survey for variability in early L dwarfs

B. R. Oppenheimer (AMNH); Cambridge); C. G. Tinney (AAO); F. J. Clarke (IoA

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A mini-survey for variability in early L dwarfs

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arxiv astro-ph/0205463 v1 pith:YWK3YH2S submitted 2002-05-27 astro-ph

A mini-survey for variability in early L dwarfs

F. J. Clarke (IoA , Cambridge) , B. R. Oppenheimer (AMNH) , C. G. Tinney (AAO) This is my paper

classification astro-ph

keywords variabilitysigmaearlydetectdifferentialdwarfsfourhours

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We report differential I-band photometry of four early L-dwarfs obtained to study variability. We detect variability on the timescale of hours in two objects, 2M0746425+200032 (at a level of 0.007 mag -- 6.5 sigma) and 2M1108307+683017 (0.012 mag -- 5 sigma). We also place upper limits of 0.02 mag (1 sigma) on the variability of two others.

A mini-survey for variability in early L dwarfs

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