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The Nucleosynthetic Signature of Population III
Growing evidence suggests that the first generation of stars may have been quite massive (~100-300 M?). Could these stars have left a distinct nucleosynthetic signature? We explore theExpand
The evolution and explosion of massive stars
Like all true stars, massive stars are gravitationally confined thermonuclear reactors whose composition evolves as energy is lost to radiation and neutrinos. Unlike lower-mass stars (M≲8M⊙),Expand
How Massive Single Stars End Their Life
How massive stars die—what sort of explosion and remnant each produces—depends chiefly on the masses of their helium cores and hydrogen envelopes at death. For single stars, stellar winds are theExpand
Nucleosynthesis in massive stars with improved nuclear and stellar physics
We present the first calculations to follow the evolution of all stable nuclei and their radioactive progeni- tors in stellar models computed from the onset of central hydrogen burning throughExpand
The Progenitor stars of gamma-ray bursts
Those massive stars that give rise to gamma-ray bursts (GRBs) during their deaths must be endowed with an unusually large amount of angular momentum in their inner regions, 1-2 orders of magnitudeExpand
Nucleosynthesis and Evolution of Massive Metal-Free Stars
The evolution and explosion of metal-free stars with masses 10-100 M ? are followed, and their nucleosynthetic yields, light curves, and remnant masses determined. Such stars would have been theExpand
Presupernova Evolution of Rotating Massive Stars. I. Numerical Method and Evolution of the Internal Stellar Structure
The evolution of rotating stars with zero-age main-sequence (ZAMS) masses in the range 8-25 M☉ is followed through all stages of stable evolution. The initial angular momentum is chosen such that theExpand
A single low-energy, iron-poor supernova as the source of metals in the star SMSS J031300.36−670839.3
It is concluded that low-energy supernovae were common in the early Universe, and that suchsupernovae yielded light-element enrichment with insignificant iron. Expand
Detailed Abundances for 28 Metal-poor Stars: Stellar Relics in the Milky Way* **
We present the results of an abundance analysis for a sample of stars with � 4 < ½Fe/H� < � 2. The data were obtained with the HIRES spectrograph at Keck Observatory. The set includes 28 stars, withExpand
Presupernova evolution of differentially rotating massive stars including magnetic fields
As a massive star evolves through multiple stages of nuclear burning on its way to becoming a supernova, a complex, differentially rotating structure is set up. Angular momentum is transported by aExpand