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check for common proper motion. If confirmed, multi-band imaging data from NICI, and perhaps integral field spectroscopy from other AO-equipped telescopes, will allow us to study the spectra of these young exoplanets. Spectral information from exoplanets is critical for the characterization of the compositions, temperatures, and masses of these worlds. Determining the “visible history” of extrasolar planets will ultimately help us better understand our own place in the universe. Michael Liu is an astronomer at the Institute for Astronomy at the University of Hawai‘i. He can be reached at:



Issue 38 - June 2009