The first galaxies at cm and mm wavelengths

Details The first galaxies at cm and mm wavelengths The first galaxies at cm and mm wavelengths

Aug 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007hia....14..263w&link_type=abstract

Highlights of Astronomy, Volume 14, p. 263-263

Astronomy and Astrophysics

Astronomy

1

Radio Lines: Ism, Radio Lines: Galaxies, Quasars: General

Scientific paper

Observations of the most distant (z6) 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 Re-ionization. Such observations reveal that about 1'3 of the hosts contain massive reservoirs of dust (>108M) and molecular gas (>1010M) the fuel for galaxy formation, and also indicate coeval starbursts at a rate >103Myr-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 (e.g., the Ly-α galaxies) into cosmic reionization (z>6), using ALMA and the EVLA.

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