Abundance Patterns in Planetary Nebulae
We previously determined abundances of He, C, N, O, and Ne for a sample of planetary nebulae (PNe) representing a
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Abundance Profiles in Disk Galaxies from Nebulae
Galactic and extragalactic abundance studies of H II regions, planetary nebulae, and supernova remnants are compiled and their implications briefly
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Abundance Profiles in Low-Mass Galaxies
The nitrogen and oxygen abundances in the warm ionized gas of low-mass, metal-poor galaxies appear surprisingly homogeneous considering the prevalence
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A General Asymptotic Implied Volatility for Stochastic Volatility Models
In this paper, we derive a general asymptotic implied volatility at the first-order for any stochastic volatility model using the
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A Hot Saturn Planet Orbiting HD 88133, from the N2K Consortium
The N2K consortium is carrying out a distributed observing campaign with the Keck, Magellan and Subaru telescopes, as well as
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An X-ray Galaxy Cluster Survey for Investigations of Dark Energy
The amount and nature of dark energy (DE) can be tightly constrained by measuring the spatial correlation features and evolution
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An X-ray Temperature Map of Coma
We present an X-ray temperature map of the Coma cluster of galaxies obtained with the ROSAT PSPC. As expected from
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A T Step Ahead Optimal Target Detection Algorithm for a Multi Sensor Surveillance System
This paper presents a methodology for optimal target detection in a multi sensor surveillance system. The system consists of mobile
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Chaos in Hamiltonians with a Cosmological Time Dependence
This paper summarises a numerical investigation of how the usual manifestations of chaos and regularity for flows in time-independent Hamiltonians
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Chaotic Mixing in Galactic Dynamics
This talk summarises what is currently understood about the phenomenon that has come to be known as {\it chaotic mixing}.
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Chemical Enrichment from Massive Stars in Starbursts
The warm ionized gas in low-mass, metal-poor starforming galaxies is chemically homogeneous despite the prevalence of large H II regions
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Chemical Enrichment from Massive Stars in Starbursts II: NGC 1569
We present a longslit optical spectrophotometric survey in the irregular "post-starburst" galaxy NGC 1569 to search for chemical gradients and
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Cluster X-ray Luminosity Evolution
Whether the X-ray luminosities of clusters of galaxies evolve has been a contentious issue for over ten years. However, the
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Collisionless Relaxation of Stellar Systems
The objective of the work summarised here has been to exploit and extend ideas from plasma physics and accelerator dynamics
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Combined Numerical and Experimental Investigation of Progressive Failure of Composites
The combination of Finite Element Method (FEM) simulation and experimental photo-elasticity provides both qualitative and quantitative information about the stress
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Control of Coherent Acoustic Phonons
Using sub-picosecond optical pump-probe techniques, coherent zone-folded longitudinal acoustic phonons (ZFLAPs) were generated and controlled in an InGaN multiple quantum
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Development of a Java Package for Matrix Programming
We had assembled a Java package, known as MatrixPak, of four classes for the purpose of numerical matrix computation. The
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Discovery of a Large Gravitational Arc in the X-ray Cluster A2280
This Letter presents the serendipitous discovery of a large arc in an X-ray selected cluster detected in the Rosat North
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Dynamic instabilities of fracture under biaxial strain using a phase field model
We present a phase field model of the propagation of fracture under plane strain. This model, based on simple physical
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Dynamics of Cuspy Triaxial Galaxies with a Supermassive Black Hole
This talk provides a progress report on an extended collaboration which has aimed to address two basic questions, namely: Should
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Dynamics of triaxial galaxies with a central density cusp
Cuspy triaxial potentials admit a large number of chaotic orbits, which moreover exhibit extreme "stickiness" that makes the process of
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Element Yields of Intermediate-Mass Stars
Intermediate mass stars occupy the mass range between 0.8-8 solar masses. In this review, evolutionary models of these stars from
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Emission line galaxies at 9200 A, including a multi-component galaxy system at z =6.43
This paper has been temporarily withdrawn by the authors. Subsequent observations with the VLT have shown that the high equivalent
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Evaluating Defaults
We seek to find normative criteria of adequacy for nonmonotonic logic similar to the criterion of validity for deductive logic.
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