NOAO >   Observing Info >   Approved Programs >   2014B-0401

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Proposal Information for 2014B-0401


PI: Grant Tremblay, Yale University, granttremblay@gmail.com
Address: Department of Astronomy, PO Box 208101, New Haven, CT 06520-8101, USA

CoI: Christopher O'Dea, Rochester Institute of Technology (Physics)
CoI: Alvaro Labiano, CSIC-INTA
CoI: Stefi Baum, RIT
CoI: Richard McDermid, Macquarie U. & AAO
CoI: Francoise Combes, Obs. Paris, CNRS
CoI: Santiago Garcia-Burillo, OAN, Madrid
CoI: Timothy Davis, European Southern Observatory

Title: A Sleeping Giant Awakened: Reignition of AGN Activity, Reborn Star Formation, and a Multiphase Outflow in one of the Largest Radio Galaxies Known

Abstract: 3C 236 is the second largest known radio galaxy and one of the largest objects in the known Universe. Its central AGN has recently reignited after a 10 Myr dormancy period, giving rise to a very young and compact radio source and a 1000 km/sec outflow of warm ionized and atomic HI gas. We propose GMOS-N IFU observations to resolve this outflow, determine its driver, and estimate the relative coupling efficiencies between the warm ionized, atomic, and cold molecular gas phases. We will assemble a much-needed spatially resolved Balmer decrement (extinction map) across the dramatic double dust lanes of this source, enabling high spatial resolution star formation rate, efficiency, and gas excitation and velocity maps. These will address several mysteries related to the very high star formation efficiency and the unique nature of the multiphase outflow in this source. 3C 236 is such a remarkable galaxy that whatever the results of the proposed observations, they will have wide-ranging implications for the triggering of star formation and AGN activity, their possibly coupled co-evolution, and the feedback effects of the latter on the former.


National Optical Astronomy Observatory, 950 North Cherry Avenue, P.O. Box 26732, Tucson, Arizona 85726, Phone: (520) 318-8000, Fax: (520) 318-8360



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