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The first galaxies at cm and mm wavelengths

Published online by Cambridge University Press:  01 August 2006

Fabian Walter ,
Chris L. Carilli ,
Frank Bertoldi ,
Pierre Cox  and
Karl M. Menten
Fabian Walter
Affiliation:
Max Planck Insitut für Astronomie, Heidelberg, Germany
Chris L. Carilli
Affiliation:
National Radio Astronomy Observatory, USA.
Frank Bertoldi
Affiliation:
Bonn University, Germany
Pierre Cox
Affiliation:
IRAM, France.
Karl M. Menten
Affiliation:
Max Planck Insitut für Radioastronomie, Bonn, Germany
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Abstract

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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 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 >103M⊙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 (e.g., the Ly-α galaxies) into cosmic reionization (z>6), using ALMA and the EVLA.

Keywords

radio lines: ISMradio lines: galaxiesquasars: general
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Highlights of Astronomy 14: Highlights of Astronomy , August 2006 , pp. 263
Copyright
Copyright © International Astronomical Union 2007

References

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