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A Far Ultraviolet Spectroscopic Explorer Survey of Interstellar Molecular Hydrogen in the Small and Large Magellanic Clouds
We describe a moderate-resolution Far Ultraviolet Spectroscopic Explorer (FUSE) survey of H2 along 70 sight lines to the Small and Large Magellanic Clouds, using hot stars as background sources. FUSEExpand
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EVIDENCE FOR MAGNETIC FLUX SATURATION IN RAPIDLY ROTATING M STARS
We present magnetic flux measurements in seven rapidly rotating M dwarfs. Our sample stars have X-ray and Hα emission indicative of saturated emission, i.e., emission at a high level, independent ofExpand
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Simulations of Dynamo Action in Fully Convective Stars
We present three-dimensional nonlinear magnetohydrodynamic simulations of the interiors of fully convective M dwarfs. Our models consider 0.3 solar-mass stars using the Anelastic Spherical HarmonicExpand
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Rotation and Magnetic Activity in a Sample of M-Dwarfs
We have analyzed the rotational broadening and chromospheric activity in a sample of 123 M-dwarfs, using spectra taken at the W.M. Keck Observatory as part of the California Planet Search program. WeExpand
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PERSISTENT MAGNETIC WREATHS IN A RAPIDLY ROTATING SUN
When our Sun was young it rotated much more rapidly than now. Observations of young, rapidly rotating stars indicate that many possess substantial magnetic activity and strong axisymmetric magneticExpand
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Rapidly Rotating Suns and Active Nests of Convection
In the solar convection zone, rotation couples with intensely turbulent convection to drive a strong differential rotation and achieve complex magnetic dynamo action. Our Sun must have rotated moreExpand
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Simulations of Core Convection in Rotating A-Type Stars: Differential Rotation and Overshooting
We present the results of three-dimensional simulations of core convection within A-type stars of 2 M☉, at a range of rotation rates. We consider the inner 30% by radius of such stars, therebyExpand
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The unified model, a fully-compressible, non-hydrostatic, deep atmosphere global circulation model, applied to hot Jupiters - ENDGame for a HD 209458b test case
We are adapting the global circulation model (GCM) of the UK Met Office, the so-called unified model (UM), for the study of hot Jupiters. In this work we demonstrate the successful adaptation of theExpand
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Magnetic cycles in a convective dynamo simulation of a young solar-type star
Young solar-type stars rotate rapidly and many are magnetically active. Some appear to undergo magnetic cycles similar to the 22 yr solar activity cycle. We conduct simulations of dynamo action inExpand
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Simulations of Core Convection in Rotating A-Type Stars: Magnetic Dynamo Action
Core convection and dynamo activity deep within rotating A-type stars of 2 M☉ are studied with three-dimensional nonlinear simulations. Our modeling considers the inner 30% by radius of such stars,Expand
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