ELT requirements for future observations of the Intergalactic Medium

Details ELT requirements for future observations of the Intergalactic Medium ELT requirements for future observations of the Intergalactic Medium

2006-01-27

arxiv.org/abs/astro-ph/0601637v1

Astronomy and Astrophysics

Astrophysics

proceedings IAU 232 "Extremely Large Telescopes", eds Whitelock, Leibundgut and Dennefeld, comments welcome

Scientific paper

10.1017/S1743921306001141

We summarise the science cases for an ELT that were presented in the parallel session on the intergalactic medium, and the open discussion that followed the formal presentations. Observations of the IGM with an ELT provides tremendous potential for dramatic improvements in current programmes in a very wide variety of subjects. These range from fundamental physics (expansion of the Universe, nature of the dark matter, variation of physical constants), cosmology (geometry of the Universe, large-scale structure), reionisation (ionisation state of the IGM at high redshift>6, to more traditional astronomy, such as the interactions between galaxies and the IGM (metal enrichment, galactic winds and other forms of feedback), and the study of the interstellar medium in high redshift galaxies through molecules. The requirements on ELTs and their instruments for fulfilling this potential are discussed.

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