NOAO >   Observing Info >   Approved Programs >   2003A-0473

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Proposal Information for 2003A-0473


PI: David Turnshek, University of Pittsburgh, turnshek@quasar.phyast.pitt.edu
Address: Physics Department, 3941 O'Hara Street, Pittsburgh, PA 15260, USA

CoI: Dan Vanden Berk, University of Pittsburgh
CoI: Cyril Hazard, University of Pittsburgh
CoI: Sandhya Rao, University of Pittsburgh
CoI: SDSS team collaborators, various

Title: Identification of QSOs for Follow-up QSO Absorption-Line and QSO Clustering Studies

Abstract: We propose a program to identify new QSOs for several types of programs: (1) future determinations of the extent and properties of the gaseous and dark matter components of nearby galaxies, (2) future determinations of the size scales of foreground gaseous structures in the Universe out to high redshift, and (3) measurement of the clustering properties of QSOs themselves. Existing data that has become available over the last several years, especially at radio and x-ray wavelengths when used in combination with SDSS colors, suggests that new searches for QSOs behind nearby galaxies will be fruitful. Additionally, SDSS spectroscopy is generally unable to find two QSOs within 55 arcsec of each other due to limitations on the fiber spacing in the spectroscopic follow-up. Thus, spectroscopy is needed for SDSS QSO candidates that could not be observed in the SDSS spectroscopic follow-up. We request 7 nights of 2.1-m time to perform spectroscopy of candidate QSOs to pursue the goals mentioned above.


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NOAO >   Observing Info >   Approved Programs >   2003A-0473

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