Optical variability of the ultracool dwarf TVLM 513-46546: evidence for inhomogeneous dust clouds
We present multicolour photometry of the M8.5V ultracool dwarf `pulsar' TVLM 513-46546 (hereafter TVLM 513) obtained with the triple-beam photometer ULTRACAM. Data were obtained simultaneously in the Sloan-g' and Sloan-i' bands. The previously reported sinusoidal variability, with a period of 2 h, is recovered here. However, the Sloan-g' and Sloan
Littlefair, S. P. et al.
Fecha de publicación:
11
2008