First list of double stars

first stars

The interstellar medium of low-metallicity systems undergoing star formation will show chemical abundance in-homogeneities due to supernova events enriching the medium on a local scale. If the star formation timescale is shorter than the timescale of mixing of the interstellar matter, the inhomo-geneities are reflected in the surface abundances of low-mass stars and thereby detailed information...

Session II First Stars

How and when did the first generation of stars form at the end of the cosmic dark ages? Quite generically, within variants of the cold dark matter model of cosmological structure formation, the first sources of light are expected to form in ∼ 10M dark matter potential wells at redshifts z 20. I discuss the physical processes that govern the formation of the first stars. These so-called Populati...

The First Stars

■ Abstract We review recent theoretical results on the formation of the first stars in the universe, and emphasize related open questions. In particular, we discuss the initial conditions for Population III star formation, as given by variants of the cold dark matter cosmology. Numerical simulations have investigated the collapse and the fragmentation of metal-free gas, showing that the first s...

Formation of the first stars.

Understanding the formation of the first stars is one of the frontier topics in modern astrophysics and cosmology. Their emergence signalled the end of the cosmic dark ages, a few hundred million years after the Big Bang, leading to a fundamental transformation of the early Universe through the production of ionizing photons and the initial enrichment with heavy chemical elements. We here revie...

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