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Molecular Gas at High Redshift

Molecular Gas at High Redshift

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CO excit<strong>at</strong>ion: Low <strong>Redshift</strong><br />

T kin ~ 200 K (T dust ~ 200 K)<br />

n(H 2 ) ~ 10 4.2 cm -3<br />

Strongly lensed (m=80-100) central ~200pc<br />

surrounding the QSO. AGN he<strong>at</strong>ing!<br />

T kin ~40 – 60 K (T dust ~ 50 K)<br />

n(H 2 ) ~ 10 3.6-4.3 cm -3<br />

T kin ~ 30-50 K (T dust ~ 30-50 K)<br />

n(H 2 ) ~ 10 2.7-3.5 cm -3<br />

Weiss et al. 2013

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