Physics
Scientific paper
Aug 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006iaujd...7e..32w&link_type=abstract
The Universe at z > 6, 26th meeting of the IAU, Joint Discussion 7, 17-18 August 2006, Prague, Czech Republic, JD07, #32
Physics
Scientific paper
Observations of the most distant (z~6) QSOs in the centimetre and millimetre regime currently serve as the only direct probe of the host galaxies of these extreme systems in the Epoch of Reionization. Such observations reveal that about 1/3 of the hosts contain massive reservoirs of dust (> 10^8 M_sun) and molecular gas (> 10^10 M_sun) -- the fuel for galaxy formation, and also indicate coeval starbursts at a rate >10^3 M_sun yr^-1, adequate to form a large elliptical galaxy in a dynamical timescale. These data imply that a highly metal enriched, molecular ISM, can be generated in galaxies within 870 Myr of the big bang. High resolution imaging of the gas also provide an estimate of the host galaxy dynamical mass. However, current observations are restricted to rare, hyper-luminous IR galaxies. I will close by considering the prospects of observing the gas, dust, and star formation in the first 'normal' galaxies (eg. the Ly-alpha galaxies) into cosmic reionization (z>6), using ALMA and the EVLA.
Bertoldi Frank
Carilli Chris
Cox Pierre
Menten Karl
Walter Fabian
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