Pop III Hypernova Nucleosynthesis and Abundances in Very Metal-Poor Halo Stars
We calculate evolution and nucleosynthesis in massive Pop III stars with M = 13 ~ 270Msun, and compare the results
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Pop III Objects and their Relationship with Dwarf Galaxies
In this paper we briefly review some of the most recent developments concerning the formation of the first luminous objects
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Boron in the Extreme Pop II Star HD 140283 and the Production of Light Elements in the Early Galaxy
Using observations of the 2496.7 A B I line with the HST GHRS at a nominal resolution of 90,000, we
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Detecting Pop III Objects with NGST
We discuss some aspects concerning the formation and the impact of the first luminous structures in the universe (PopIIIs), with
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Light Element Settling in Main-Sequence Pop II Stars and the Primordial Lithium Abundance
While theoretical computations of the lithium abundances in Pop II stars predict variations from star to star, the most recent
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Synthesizing Deuterium in Incipient Pop II Stars
Sites for incipient low metallicity (Pop II) star formation can support environments conducive to Deuterium production up to levels observed
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The disinformation problem for black holes (pop version)
The supposed information paradox for black holes is based on the fundamental misunderstanding that black holes are usefully defined by
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The First Structures in the Universe: Pop III Objects
We review some of the possible observable effects (reionization, feedback on galaxy formation, supernovae and metal enrichment) of the first
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Temperature and Gas-Environment Dependent Electron and Phonon Transport in Suspended Carbon Nanotubes Up to Electrical Breakdown
High bias electrical transport characteristics of freely suspended metallic single-walled carbon nanotubes (SWNTs) are investigated at 250-400K in vacuum and
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Evolution of low-mass metal-free stars including effects of diffusion and external pollution
We investigate the evolution of low-mass metal-free Population III stars. Emphasis is laid upon the question of internal and external
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Period Changes of Delta Scuti Stars and Stellar Evolution
Period changes of Delta Scuti stars have been collected or redetermined from the available observations and are compared with values
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The Metal Contents of Very Low Column Density Lyman-alpha Clouds: Implications for the Origin of Heavy Elements in the Intergalactic Medium
We investigate the metal contents of Lyman-alpha clouds at 2.2<z<3.6 with 10^13.5<N(HI)<10^14 cm-2 using high resolution, high S/N spectra of
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A case for nucleosynthesis in slowly evolving models
We present a case for Cosmological Nucleosynthesis in an FRW universe in which the scale factor expands linearly with time:
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A method to infer the stellar population that dominated the UV background at the end of reionization
We present an observational test of the spectrum of the ionizing background at z~5; the test is sufficiently sensitive to
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Ca II activity and rotation in F-K evolved stars
(Abridged) Ca II H and K high resolution observations for 60 evolved stars in the field and in 5 open
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Halo Mass Function: Low-mass Stars in Deep Fields
Deep fields are unique probes of the Galactic halo. With a limiting magnitude of, e.g., I = 30 mag, all
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The impact of population III objects on the early universe
We study the effects of the ionizing and dissociating photons produced by Pop III objects on the surrounding intergalactic medium.
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Antibubbles: evidences of a critical pressure
We present experimental investigations of antibubbles. Such an unusual fluid object is a thin spherical air shell surrounding a liquid
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Baryon Production in the String Fragmentation Picture
An improved version of the ``pop-corn'' model for baryon production in quark and gluon jets is presented. With a reduced
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Charge-Generated Changes in Graphite Structures
It will be shown that a negatively charged carbon atom in a graphite sheet has an electron structure that is
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Deep HST WFPC2 Photometry of M31's Thick Disk(?)
We present deep color-magnitude diagrams (CMDs) for a field along the outer disk of M31 based on archival Hubble Space
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Distance to the Large Magellanic Cloud: the RR Lyrae stars
(abridged) New photometry and spectroscopy for more than a hundred RR Lyrae stars in two fields located close to the
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Expected Changes of Supernovae with Redshift due to Evolution of their Progenitors
We have analyzed the influence of the stellar populations, from which SN progenitors come from, on the observational outcome, including
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Gravoturbulent Star Cluster Formation
Stars form by gravoturbulent fragmentation of interstellar gas clouds. The supersonic turbulence ubiquitously observed in Galactic molecular gas generates strong
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