Kevin HARRINGTON
(Argelander Institute for Astronomie)
Constraining the total molecular gas mass and excitation conditions is vital at the peak epoch of cosmic star formation. The brightest objects in the entire sky can serve as ideal laboratories for in-depth, high S/N case studies. As the identification requires the all-sky, this nicely complements the parameter space sampled by deep fields like COSMOS. I will present CO analyses of lensed, high-z galaxies with apparent log(LIR) > 13−14 L⊙. They were initially selected via the all-sky submm Planck survey and cross-correlated with archival Herschel data. We use the Green Bank Telescope (GBT) to observe seven extremely luminous infrared galaxies in CO(1 − 0). Prior to these CO(1 − 0) measurements of the bulk molecular gas supply we obtained with the Large Millimeter Telescope (LMT) one low-J CO line and secure 1.1mm continuum with LMT/AzTEC. The LMT+GBT results have confirmed the zCO = 1.33 − 3.26. I will compare these results to the empirical relation of L'CO(1-0) to rest-frame long-wavelength dust continuum to probe the upper limits in CO and dust specific luminosity. Recent results from the IRAM 30m telescope of mid-J CO line follow-up will be presented in the context of future/ongoing work.