X-ray Probes of Star Formation Outside the Local Universe
Ann Hornschemeier
X-rays provide a unique window into star formation processes, providing
important information on the evolution of stellar endpoints and hot gas
that cannot be obtained at other wavelengths. With Chandra we may study
this X-ray emission at cosmologically interesting distances (0.1 < z <
2.0), placing constraints on X-ray emission over substantial evolutionary
timescales (> 1 Gigayear). I will report on results from the two Chandra
Deep Fields, which have recently been surveyed using the HST Advanced
Camera for Surveys through the GOODS program. This includes physical
constraints on the ULX population at appreciable look-back times, allowing
us to make a strong link between star formation and ULX sources. I will
discuss current efforts to better characterize the broad X-ray spectral
properties of star-forming galaxies in the relatively nearby (z<0.1)
Universe in a two-fold approach: (1) through a cross-correlation of the
Chandra archive and the Sloan Digital Sky survey and (2) through upcoming
Chandra observations of galaxies in the Coma cluster. This combined
approach assembles a complete picture of the X-ray properties of
star-forming galaxies.