SUMMARY OF PROPOSAL 53005
LEICESTER UNIVERSITY
UK LE1 7RH
LEICESTER
UNIVERSITY ROAD
Tel: +44 116 252 3552 Fax: +44 116 252 3311
Medium: 2GB8MM
Subject: STARS
SPECTRAL SURVEY OF CONTACT BINARY SYSTEMS - W UMA A-TYPE SYSTEMS
ABSTRACT
We propose to observe, for 40ks each, two X-ray bright W UMa A-type binary systems. Our goal is to obtain high-quality spectra for modelling of the stellar coronae, and in particular for element abundance determinations. The proposed observations will extend the contact-binary sample (of 5 W-type systems and 2 A-type systems) obtained by the present investigators in ASCA AOs 1-4, providing essential coverage at earlier spectral types and longer binary/rotation periods. The proposed targets appear to be the only remaining W UMa A-type systems accessible to ASCA.
CO-INVESTIGATORS
| CO-I NAME | INSTITUTE | COUNTRY |
|---|
| K. MAKISHIMA | TOKYO UNIVERSITY | JAPAN |
| J.E. MORLEY | LEICESTER UNIVERSITY | UK |
| S.T. HODGKIN | LEICESTER UNIVERSITY | UK |
| M.A. BARSTOW | LEICESTER UNIVERSITY | UK |
TARGETS
| TARGET NAME | PRI | RA | DEC | TIME | TC | OFF | GIS | SIS CNT | OBS |
|---|
| 1)AK HER | 2 | 258.4875 | 16.3506 | 40 ks | N | Y | P | 0.04000 | 1 |