Detection of the First Star Clusters With NGST

Details Detection of the First Star Clusters With NGST Detection of the First Star Clusters With NGST

1997-05-20

arxiv.org/abs/astro-ph/9705144v1

Astronomy and Astrophysics

Astrophysics

6 pages LaTeX, 2 figures included. To appear in the Proceedings of Science with the Next Generation Space Telescope, 7-9 April

Scientific paper

We calculate the observable signatures of the first generation of stars at high redshift (510) within its 4'x4' field of view. If stars occupy a region comparable to the virial radius of the cluster, then 1% of these clusters could be resolved. We calculate the expected number-flux relation and angular size distribution for these early star clusters. We also describe the reionization of the IGM due to the first generation of stars, and the consequent damping of the CMB anisotropies on small angular scales. This damping could be detected below 10 degree angular scales by MAP and PLANCK.

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