SUMMARY OF PROPOSAL 63036
UNIVERSITY OF LEICESTER
UNIVERSITY ROAD
LEICESTER
LEICESTERSHIRE UK LE1 7RH
Tel: +44 116 252 3497 Fax: +44 116 252 3311
Medium: CD ROM
Subject: AGN
AN ASCA OBSERVATION OF THE RECENTLY DISCOVERED QUASAR PDS456
ABSTRACT
Recently, during the Pico Dos Dias (PDS) survey for young stellar objects, the discovery of a new nearby bright radio-quiet quasar has been made. The quasar named PDS456, discovered at low galactic latitude, has been measured to have a blue magnitude of B=14.69 at a redshift of z=0.184. When de-reddened, this equates to an absolute magnitude of M(B)=-26.7, which is about 1.3 times the luminosity of 3C273. Evolutionary theories of quasars predict few luminous quasars in the nearby Universe. The existence of two low-redshift luminous quasars, PDS456 and 3C273, implies evolution proceeds at a lower rate than usually predicted. Understanding the nature of PDS456 and how it compares to 3C273 and other more distant quasars is therefore of great importance.
CO-INVESTIGATORS
| CO-I NAME | INSTITUTE | COUNTRY |
|---|
| PAUL O'BRIEN | UNIV OF LEICESTER | UK |
| MARTIN WARD | UNIV OF LEICESTER | UK |
| MARTIN TURNER | UNIV OF LEICESTER | UK |
| TSUNEO KII | ISAS | JAPAN |
| TAKAYA OHASHI | TOKYO METRO. UNIV. | JAPAN |
TARGETS
| TARGET NAME | PRI | RA | DEC | TIME | TC | OFF | GIS | SIS CNT | OBS |
|---|
| 1)PDS456 | 1 | 262.0825 | -14.2655 | 40 ks | N | N | P | 0.35500 | 1 |