NOAO >   Observing Info >   Approved Programs >   2012A-0386

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Proposal Information for 2012A-0386


PI: Lisa Winter, University of Colorado, Hubble Fellow, lisa.winter@colorado.edu
Address: Astrophysical and Planetary Sciences, 593 UCB, Boulder, CO 80309, United States

CoI: Sylvain Veilleux, University of Maryland
CoI: David Rupke, Rhodes College
CoI: Hannah Krug, University of Maryland

Title: Optical Outflows and Emission Line Properties in X-ray Obscured AGNs

Abstract: Mass outflows from AGN are believed to affect their host galaxy's evolution - enriching their local ISM and potentially IGM with metals from supernova explosions and quenching epochs of star formation - however, the properties of these outflows are poorly understood. Even the fraction of outflows is not known, particularly for obscured AGN, where reddening inhibits the use of the typical outflow signatures (in the UV/soft X-ray spectra). To determine the outflow properties of absorbed AGN, we propose to obtain optical spectroscopy with the SOAR GHTS of a sample of 54 X-ray absorbed/type 2 AGN selected in the very hard X-rays with Swift. The X-ray properties of this sample are known (Winter et al. 2009) and we already observed the companion sample of 51 type 1 sources from the same survey. We will study both the ionized (i.e., shifts in [O III] emission) and the neutral (i.e., the Na ID doublet) outflows in the southern sources, as a complementary program to our accepted APO observations of the northern sources. \it This will provide the first measurement of the covering fraction of outflows in absorbed AGN and provide an important comparison to our analysis of optical/X-ray outflows of the unabsorbed sample. Additionally, uniform optical spectra are not available for the southern BAT-detected sources. These spectra will unveil important properties of the AGN, including optical luminosities and emission line properties/classifications.


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