NOAO >   Observing Info >   Approved Programs >   2013B-0104

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Proposal Information for 2013B-0104


PI: David Rupke, Rhodes College, drupke@gmail.com
Address: 2000 N. Parkway, Memphis, TN, 38112, USA

CoI: Nahum Arav, Virginia Polytechnic Institute

Title: Verifying the Spatial Extent of QSO Outflows Discovered in Absorption

Abstract: Two recent lines of evidence point to the existence of QSO feedback in the form of large-scale outflows: (1) detections of large-scale, high-velocity winds in mergers containing QSOs; (2) new, sensitive observations and detailed photoionization modeling of excited transitions in UV absorbers in QSOs. The first method has the strength of direct spatial resolution, while the second probes a larger range of ionization and density. We propose to connect these two probes by observing three low-redshift AGN which have UV-absorbing and outflowing clouds which are indirectly inferred to lie at radii of 1-10 kpc. We will use the GMOS IFU to probe the spatial extent of ionized emission line and neutral absorption line gas in these systems. The optical and UV diagnostics should measure gas clouds with similar physical conditions; thus the spatially-resolved optical data will allow us to confirm and quantify the sizes of the outflows discovered in the UV. This would be a major step forward in constraining the sizes and structure of outflows previously detected using only single-aperture UV spectroscopy, and thereby their masses, energetics and potential to serve as feedback.


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NOAO >   Observing Info >   Approved Programs >   2013B-0104

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