Origin of the Honolulu Volcanics Series (Oahu, Hawaii) From High Precision Pb Isotope Data
The origin and sources of rejuvenated volcanism in Hawaii has been long debated with the depleted isotopic features commonly attributed to assimilation of the...
Origin Of The Near-earth Asteroid Phaethon And The Geminids Meteor Shower
Asteroid (3200) Phaethon is a remarkable Near Earth Asteroid (NEA). It was the first asteroid associated with a meteor shower, namely the Geminid stream1...
Origin of the Proper Motions of Emerging Bipolar Magnetic Regions
We have performed numerical simulations of the rise of magnetic flux tubes through the convection zone. We find that the observed proper motions of pores and...
OSCA, an Optimized Stellar Coronagraph for Adaptive optics: Description and first light
We describe a coronagraph facility built for use with the 4.2 metre William Herschel Telescope (WHT) and its adaptive optics system (NAOMI). The use of the...