A CFH12K Survey of Red Giant Stars in the M81 Group
We present the preliminary results of a wide-field photometric survey of individual red giant branch (RGB) and asymptotic giant branch
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A Keck Adaptive Optics Search for Young Extrasolar Planets
Adaptive optics, large primary mirrors, and careful selection of target stars are the keys to ground-based imaging of extrasolar planets.
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Characterizing Low-Ionization Structures in PNe
Fifty five planetary nebulae containing micro-structures of low-ionization (LIS) are analyzed in this review in terms of LIS morphology, kinematics,
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Enigmatic low-velocity jet-like features in planetary nebulae
We are developing a project aimed at studying the physical properties, origin and evolution of low-ionization structures in planetary nebulae.
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In Search of Evidence for Toroidal B Fields Associated with the Jets of AGN
Evidence is mounting that many of the transverse jet B fields observed in BL Lac objects on parsec scales represent
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Keck adaptive optics observations of TW Hydrae Association members
Adaptive optics (AO) on 8-10 m telescopes is an enormously powerful tool for studying young nearby stars. It is especially
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Observational Mishaps - a Database
We present a World-Wide-Web-accessible database of astronomical images which suffer from a variety of observational problems, ranging from common occurences,
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Polarization and energy content of parsec scale AGN jets
Most of energy carried by relativistic AGN jets remains undetected until hundreds of kiloparsecs where interaction with intergalactic medium produces
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Symmetries of the Dissipative Hofstadter Model
The dissipative Hofstadter model, which describes a particle in 2-D subject to a periodic potential, uniform magnetic field, and dissipation,
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