NOAO >   Observing Info >   Approved Programs >   2014A-0481

Small NOAO Logo

Proposal Information for 2014A-0481


PI: Karen Lewis, College of Wooster, klewis@wooster.edu
Address: Department of Physics, 1189 Beall Avenue, Wooster, OH 44691, United States

CoI: Vanessa Logan, College of Wooster

Title: Optical Spectroscopy of Hard-band Sources in the XMM Slew Survey

Abstract: The XMM Slew Survey is an all-sky X-ray survey that is sensitive in the hard band (2-12 keV) down to a flux of 4 \times 10^-13 erg\;\rm s^-1 cm^-2. As a hard X-ray survey, it will detect moderately absorbed AGNs (N_H < 10^23 \rmcm^-2); more importantly, the large area coverage makes it possible to detect luminous and rare AGN with low number densities that are missed in surveys that cover only a small portion of the sky. The XMM Slew survey offers us a rare opportunity to gain an accurate census of the z<0.2 universe which has not been probed well either by deep X-ray surveys or pointed observations. We propose for two separate runs of 5 and 3 nights at the SOAR 4m telescope to obtain follow-up spectroscopy of optical counterparts in the Southern hemisphere, many of which are in fact fairly bright nearby galaxies that have thus far evaded detection as an AGN. In addition to obtaining redshifts for all targets, we will obtain high S/N spectra so as to investigate correlations with the X-ray and optical spectroscopy properties and investigate the root cause for discrepancies between the optical and X-ray classifications noticed in samples of X-ray selected AGN.


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



NOAO >   Observing Info >   Approved Programs >   2014A-0481

noaoprop-help@noao.edu

Small NOAO Logo