SUMMARY OF PROPOSAL 63009
UNIVERSITY OF CENTRAL LANCASHIRE
CORPORATION STREET
PRESTON
LANCASHIRE UK PR1 2HE
Tel: (+44) (0) 1772 893570 Fax: 01772 892903
Medium: 4GBDAT
Subject: CATACLYSMIC VARIABLES
CONSTRAINING THE LOCAL ABSORPTION IN OY CAR
ABSTRACT
We propose to obtain phase-resolved ASCA observations of the dwarf nova OY Car during quiescence. The presence or absence of eclipse will test if the X-ray source previously observed with the PSPC is the boundary layer as in other low mass accretion rate systems. In addition, we will search for a highly absorbed boundary layer component at higher energies. This will allow us to constrain the local column density, and resolve the apparent discrepancies between the values measured in the X-ray, and those deduced from the ``iron curtain'' seen in the HST UV spectra. We are requesting HST time simultaneous with the ASCA observations, so this proposal is Time Critical.
CO-INVESTIGATORS
| CO-I NAME | INSTITUTE | COUNTRY |
|---|
| TIM NAYLOR | UNIVERSITY OF KEELE | UK |
| GABRIEL PRATT | UNIV. CEN. LANCS. | UK |
| KOJI MUKAI | NASA-GSFC/USRA | USA |
| JANET WOOD | UNIVERSITY OF KEELE | UK |
TARGETS
| TARGET NAME | PRI | RA | DEC | TIME | TC | OFF | GIS | SIS CNT | OBS |
|---|
| 1)OY CARINAE | 3 | 151.5958 | -70.2350 | 60 ks | Y | N | P | 0.15000 | 1 |
TARGET 1
EPHEMERIS CENTRE: MJD3993.053411+0.30631209239E. 36 HRS ELAPSE TIME ENSURES ADEQUATE BINARY PHASE COVERAGE. TIME CRITICALITY REQUIRED FOR SIMULTANEOUS WITH HST. DATE OF COORD. OBS. AS YET UNKNOWN.
COORDINATED OBSERVATION: START: Jan 1,2000 at 11STOP: Jan 2,2000 at 11