SUMMARY OF PROPOSAL 42016
DR. STEPHEN M. WHITE
UNIVERSITY OF MARYLAND
MD USA 20742
COLLEGE PARK


  E-mail: WHITE@ASTRO.UMD.EDU	Tel: (301) 405 1547	Fax: (301) 314 9067
  Medium: 2GB8MM

Subject: STARS                                                       
  Title: THE NATURE OF THE X-RAY SOURCE IN THE PRECATACLYSMIC BINARY V471 TAURI          


Abstract:
 V471 Tauri is a ``touchstone'' system for a wide range of important areas of stellar
 research, including stellar evolution, cataclysmic variables, open clusters, binary
 stars, stellar activity, and red and white dwarf physics. It is one of the brightest
 X-ray sources in the Hyades. Following on our successful EUVE/optical/radio
 campaign, we propose the first ASCA observation of this star in order to study the
 distribution of heated plasma in the V471 Tau system and to look for evidence for
 the origin of the soft X-rays: stellar activity, or interaction between the K dwarf and the white dwarf.

 Co-Is:
   1  JEREMY LIM          	IAA, ACAD. SINICA             TAIWAN    
      (No Co-I contact data)
   2  SCOTT L. CULLY      	SSL, U.C.-BERKELEY            USA       


Target Name           PRI RA        Dec        Time TC  Off GIS SIS_Cts  Obs
-------------------   --- --------  --------   ---- --  --- --- -------  ---
V471 TAURI             0   57.6017   17.2467    50   N   N   P  0.27000   1