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Title:
Studying the first galaxies with ALMA
Authors:
Carilli, C. L.; Walter, F.; Wang, R.; Wootten, A.; Menten, K.; Bertoldi, F.; Schinnerer, E.; Cox, P.; Beelen, A.; Omont, A.
Affiliation:
AA(National Radio Astronomy Observatory), AB(Max Planck Insitut für Astronomie), AC(National Radio Astronomy Observatory), AD(National Radio Astronomy Observatory), AE(Max-Planck Institute for Radio Astronomy), AF(Bonn University), AG(Max Planck Insitut für Astronomie), AH(IRAM), AI(Max-Planck Institute for Radio Astronomy), AJ(Institute de Astrophysique)
Publication:
Astrophysics and Space Science, Volume 313, Issue 1-3, pp. 307-311 (Ap&SS Homepage)
Publication Date:
01/2008
Origin:
SPRINGER
Keywords:
Radio astronomy, Extragalactic astronomy, Cosmology, Galaxy evolution and formation
Abstract Copyright:
(c) 2008: Springer Science+Business Media B.V.
DOI:
10.1007/s10509-007-9647-9
Bibliographic Code:
2008Ap&SS.313..307C

Abstract

We discuss observations of the first galaxies, within cosmic reionization, at centimeter and millimeter wavelengths. We present a summary of current observations of the host galaxies of the most distant QSOs ( z˜6). These observations reveal the gas, dust, and star formation in the host galaxies on kpc-scales. These data imply an enriched ISM in the QSO host galaxies within 1 Gyr of the big bang, and are consistent with models of coeval supermassive black hole and spheroidal galaxy formation in major mergers at high redshift. Current instruments are limited to studying truly pathologic objects at these redshifts, meaning hyper-luminous infrared galaxies ( L FIR ˜1013 L ȯ). ALMA will provide the one to two orders of magnitude improvement in millimeter astronomy required to study normal star forming galaxies (i.e. Ly- α emitters) at z˜6. ALMA will reveal, at sub-kpc spatial resolution, the thermal gas and dust—the fundamental fuel for star formation—in galaxies into cosmic reionization.
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