SUMMARY OF PROPOSAL 81201

DR SHIGEO YAMAUCHI
YAMAUCHI@HIRYU.HSS.IWATE-U.AC.JP

IWATE UNIVERSITY
3-18-34 UEDA
MORIOKA
IWATE JAPAN 020-8550
Tel: 81-19-621-6817 Fax: 81-19-621-6715
Medium: CD ROM
Subject: STARS

PROBING THE FLARE AND DISK STRUCTURE OF T TAURI STARS


ABSTRACT

We propose long look observations of V773 Tau. V773 Tau is a very active T Tauri star which frequently exhibits large X-ray flares. We investigate (1) a flare duty ratio, (2) heating and cooling processes of the flaring plasma, (3) a structure of a circumstellar disk using the absorption column density during flares, and (4) the low metal abundance problem observed in young stars. The observations will lead to our understanding of X-ray flares from T Tauri stars.

CO-INVESTIGATORS
CO-I NAME INSTITUTE COUNTRY
YOHKO TSUBOIPENN STATE UNIV.USA
KATSUJI KOYAMAKYOTO UNIV.JAPAN

TARGETS

TARGET NAMEPRIRADECTIMETCOFFGISSIS CNTOBS
1)V773 TAU
A
63.5538 28.2037
300 ks
N
Y
P
0.10000
1