Dr
Rowan J Smith
(ITA, University of Heidelberg)
10/11/2010, 16:00
Early stars
Contributed talk
While the first stars were long thought to form as isolated, single objects, recent
cutting-edge simulations have shown that multiple sites of fragmentation can be formed
even in primordial halos. These new results have important consequences for our
understanding of the early Universe, and the observational signatures that might be
expected from the first stars and protogalaxies. It...
Dr
Simon Glover
(Institute for Theoretical Astrophysics, Heidelberg)
10/11/2010, 16:20
Early stars
Contributed talk
It is widely believed that the initial mass function (IMF) of stars formed in metal-free gas -- the so-called Population III stars -- was very top-heavy, being dominated by very massive stars. On the other hand, the existence of very low metallicity halo stars demonstrates that it is possible to form low-mass stars with metallicities as small as [Fe/H] ~ -5. This implies that the presence of...
Prof.
Peter Hauschildt
(Hamburger Sternwarte)
10/11/2010, 16:40
Dark Stars
Contributed talk
I will present the initial results for Dark Star model atmospheres
and synthetic spectra computing using the PHOENIX model atmosphere
package. There are some interesting features of the spectra that
I will discuss.
