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A Search for Li in Lithium-Poor Stars with Planets
Avi M. Mandell, Jian Ge, Norm Murray
Using high-resolution, high quality spectra we investigate the presence of Li in two lithium-poor stars that host extrasolar planetary systems. We present improved atomic and m…
On the Location and Composition of the Dust in the MCG-6-30-15 Warm Absorber
D. R. Ballantyne, Joseph C. Weingartner, N. Murray
Hubble Space Telescope images of MCG-6-30-15 show a dust lane crossing the galaxy just below the nucleus. In this paper, we argue that this dust lane is responsible for the observe…
Halting planet migration by photoevaporation from the central source
Isamu Matsuyama, Doug Johnstone, Norman Murray
The recent discovery of Jupiter-mass planets orbiting at a few AU from their stars compliments earlier detections of massive planets on very small orbits. The short period orbits s…