SUMMARY OF PROPOSAL 82022
GSFC/USRA
CODE 662 GSFC
GREENBELT
MD USA 20771
Tel: 301-286-5576 Fax: 301-286-1629
Medium: CD ROM
Subject: STARS
LONG TERM MONITORING OF THE SHORT PERIOD COLLIDING WIND BINARY SYSTEM V444 CYGNI
ABSTRACT
We propose to monitor the important short period (4.2 day) binary system V444~Cyg for two weeks with ASCA, to provide coverage over 3 complete orbital cycles. These observations will provide the most detailed orbital lightcurve of any colliding wind system, and determine the extent of any non phase related variability. V444~Cyg is of particular importance in that it is the best example of a short period colliding wind binary system, and is a key testing ground for our understanding of wind-wind interactions, W-R winds and W-R stars in general.
CO-INVESTIGATORS
| CO-I NAME | INSTITUTE | COUNTRY |
|---|
| IAN STEVENS | BIRMINGHAM | UK |
| ANDY POLLOCK | C&S LTD | UK |
| THE XMEGA GROUP | VARIOUS | USA |
TARGETS
| TARGET NAME | PRI | RA | DEC | TIME | TC | OFF | GIS | SIS CNT | OBS |
|---|
| 1)V444 CYG | B | 304.8850 | 38.7317 | 500 ks | N | N | P | 0.02000 | 1 |