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“From the Very First Stars to z~6 Galaxies and Quasars” Dr. Michele Trenti STScI |
| High redshift observations are opening larger and larger windows on galaxy formation and evolution in the first billion years of the Universe, with very rare bright quasars identified from all-sky surveys and more common galaxies observed through deep narrow-beam programs, such as GOODS and the UDF. Using cosmological simulations of structure formation I will first quantify the typical systematic uncertainties in the observed luminosity function due to cosmic variance, not only in its normalization but also in the shape. I will then discuss the link between these z~6 galaxies and quasars and the very first "Pop III" stars formed at z>40, which provide early seeding for supermassive black hole growth. |