NSF Org:	AST Division Of Astronomical Sciences
Recipient:	THE PENNSYLVANIA STATE UNIVERSITY
Initial Amendment Date:	August 26, 1999
Latest Amendment Date:	July 31, 2003
Award Number:	9900703
Award Instrument:	Standard Grant
Program Manager:	Nigel Sharp nsharp@nsf.gov  (703)292-4905 AST  Division Of Astronomical Sciences MPS  Directorate for Mathematical and Physical Sciences
Start Date:	September 1, 1999
End Date:	February 29, 2004 (Estimated)
Total Intended Award Amount:	$301,136.00
Total Awarded Amount to Date:	$306,036.00
Funds Obligated to Date:	FY 1999 = $301,136.00 FY 2003 = $4,900.00
History of Investigator:	Donald Schneider (Principal Investigator)
Recipient Sponsored Research Office:	Pennsylvania State Univ University Park 201 OLD MAIN UNIVERSITY PARK PA  US  16802-1503 (814)865-1372
Sponsor Congressional District:	15
Primary Place of Performance:	Pennsylvania State Univ University Park 201 OLD MAIN UNIVERSITY PARK PA  US  16802-1503
Primary Place of Performance Congressional District:	15
Unique Entity Identifier (UEI):	NPM2J7MSCF61
Parent UEI:
NSF Program(s):	EXTRAGALACTIC ASTRON & COSMOLO
Primary Program Source:	app-0103  app-0199
Program Reference Code(s):	0000, 1206, 1207, 9178, 9251, OTHR, SMET
Program Element Code(s):	121700
Award Agency Code:	4900
Fund Agency Code:	4900
Assistance Listing Number(s):	47.049

ABSTRACT

AST-9900703

Near infrared surveys for high redshift quasars

Donald P. Schneider

Over the last decade the NSF has funded a series of surveys, carried out using a large format CCD camera on the Palomar 5-m telescope. These surveys have investigated quasar populations at a redshift of about four. The highest redshift quasars are interesting; they place the strongest constraints on formation mechanisms of these objects and reveal the nature of the intergalactic medium at ever earlier times. In this study, Dr. Schneider is extending these studies out to redshifts of up to six. The investigations consist of the following datasets: (1) two Palomar CCD surveys; a four filter survey and a slitless survey. (2)the Sloan Digital Sky Survey; and (3) optical identifications in two deep x-ray surveys form Roentgen Satellite and the Chandra advanced x-ray facility.
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