Altair's Oblateness and Rotation Velocity
We present infrared interferometric angular size measurements for the A7IV-V star Altair which indicate a non-circular projected disk brightness distribution.
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A new, cleaner colour-magnitude diagram for the metal-rich globular cluster NGC 6528
Using two epochs of observations with HST/WFPC2 we obtain the stellar proper motions for all stars in the field. The
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Clustering of high-redshift galaxies: relating LBGs to dark matter halos
We investigate the clustering properties of high-redshift galaxies within three competing scenarios for assigning luminous galaxies to dark matter halos
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Clusters in Various Cosmological Models: Abundance and Evolution
The combination of measurements of the local abundance of rich clusters of galaxies and its evolution to higher redshift offers
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Constraining the dark energy with Ly-alpha forest
Statistical properties of gas absorption in high redshift quasars such as power spectrum and bispectrum allow one to determine the
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Damped Ly-alpha Systems in Semi-Analytic Models: Sensitivity to dynamics, disk properties, and cosmology
Previously we have shown that it is possible to account for the kinematic properties of damped Lyman alpha systems (DLAS)
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Dirac quasiparticles and spin-lattice relaxation in the mixed state
We present the results of quantum-mechanical calculations, using the singular gauge transformation of Franz and Tesanovic, of the rate of
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Disks at High Redshift: Interactions, Mergers, and Starbursts
Do disk galaxies exist at redshifts much greater than unity, and how might they look different from local disks? How
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Evaluating the disk formation paradigm in the LCDM framework: constraints from the Milky Way
We investigate the properties of a galaxy similar to the Milky Way within the context of standard disk formation theory
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Favored Variants of Cold Dark Matter Cosmologies
We discuss variants of Cold Dark Matter (CDM) dominated cosmological models that give good agreement with a range of observations.
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Gravitational lensing and elliptical galaxies
If the statistics of quasar lensing are to be used to constrain the cosmological model, the various potential systematic uncertainties
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Gravitational lensing in galaxy redshift surveys
Gravitationally-lensed quasars should be discovered as a by-product of large galaxy redshift surveys, being discovered spectroscopically when a low-redshift galaxy
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Local Column Density Distribution Function from HI selected galaxies
The cross-section of sky occupied by a particular neutral hydrogen column density provides insight into the nature of Lyman-alpha absorption
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Mass Segregation in Young LMC Clusters
We present the detailed analysis of Hubble Space Telescope observations of the spatial distributions of different stellar species in two
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Optical Counterparts to Damped Lyman Alpha Systems
Previously we have shown (Maller et al, 1998) that the kinematics of Damped Lyman Alpha Systems (DLAS) as measured by
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Primordial or Dynamical Mass Segregation in Young LMC Clusters?
We present the detailed analysis of Hubble Space Telescope observations of the spatial distributions of different stellar species in two
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Recent Results from the Wide Angle Search for Planets (WASP) Prototype
WASP0 is a prototype for what is intended to become a collection of WASPs whose primary aim is to detect
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Recycling of ghost galaxies: The origin of giant HI ring around NGC 1533
We propose that the giant HI ring recently discovered by HIPASS for S0 galaxy NGC 1533 is formed by unequal-mass
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Results from the Wide Angle Search for Planets Prototype (WASP0) II: Stellar Variability in the Pegasus Field
Recent wide-field photometric surveys which target a specific field for long durations are ideal for studying both long and short
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Stellar Abundances in Giant Stars in the Metal-Rich Globular Cluster NGC6528
We present the first results of a detailed abundance analysis, based on VLT observations, of giant stars in the very
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Studying Galaxy Formation with Hubble's Successor
In this paper, I discuss the capabilities and limitations of an 8-10 meter ultraviolet/optical telescope in space, the proposed successor
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The Bulge Globular Cluster NGC 6553: Observations with HST's WFPC2, STIS, and NICMOS
As part of a large HST project to study the formation and evolution of rich star clusters in the Large
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The Coleman-Weinberg effective potential in the theory of superconductivity
A quasi two-dimensional non-relativistic four-Fermi theory is studied at finite temperatures in the next-to-leading order approximation using the Coleman-Weinberg effective
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The dark matter halo of the gravitational lens galaxy 0047-2808
The location of the images in a multiple-image gravitational lens system are strongly dependent on the orientation angle of the
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