Institute of Astronomy

First observations of the molecular gas reservoirs of large disk galaxies at z~1.5

SpeakerTalk DateTalk Series
Emanuele Daddi, CEA, Saclay, Paris15 January 2009Institute of Astronomy Colloquia

Abstract

Molecular gas is the key ingredient for star formation. We have
recently demonstrated through CO observations that typical, near-IR
selected galaxies at z~1.5 host giant reservoir of molecular gas,
implying star formation efficiencies similar to those of local
spirals, and are enough luminous in CO to be detected with the
current instrumentation. I'll present the results of our ongoing
surveys with the PdBI and VLA interferometers, including the
observations of a larger sample, the determination of the gas spatial scales, the search for cold and warm gas components. I'll discuss implications for the nature of star formation in massive high-z galaxies, and for the future surveys with ALMA and EVLA.

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