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A DEEP SEARCH FOR MOLECULAR GAS IN TWO MASSIVE LYMAN BREAK GALAXIES AT z=3 AND 4: VANISHING CO-EMISSION DUE TO LOW METALLICITY?

Abstract:

We present deep IRAM Plateau de Bure Interferometer observations, searching for CO-emission toward two massive, non-lensed Lyman break galaxies at z = 3.216 and 4.058. With one low significance CO detection (3.5σ) and one sensitive upper limit, we find that the CO lines are ≳3-4 times weaker than expected based on the relation between IR and CO luminosities followed by similarly massive galaxies at z = 0-2.5. This is consistent with a scenario in which these galaxies have low metallicity, cau...

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Publication status:
Published

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Publisher copy:
10.1088/2041-8205/776/2/L24

Authors


Sargent, M More by this author
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Institution:
University of Oxford
Department:
Oxford, MPLS, Physics, Astrophysics
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Journal:
ASTROPHYSICAL JOURNAL LETTERS
Volume:
776
Issue:
2
Pages:
L24-L24
Publication date:
2013-10-20
DOI:
EISSN:
2041-8213
ISSN:
2041-8205
URN:
uuid:8d62a4b9-ddd8-4a59-9c83-c237e2a3e171
Source identifiers:
435553
Local pid:
pubs:435553

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