ABSTRACT


The ASCA Medium Sensitivity Survey (the GIS Catalog 
Project): Source Catalog


    Y. Ueda*1, Y. Ishisaki*2, T. Takahashi*1, 
    K. Makishima*2, and T. Ohashi*3

    1: Institute of Space and Astronautical Science, 
       Yoshinodai 3-1-1, Sagamihara, Kanagawa 229-8510, 
       Japan
    2: Department of Physics, Tokyo Metropolitan University, 
       Hachioji, Tokyo 192-0397, Japan
    3: Department of Physics, University of Tokyo, 
       Bunkyo-ku, Tokyo 113, Japan


We present the first source catalog of the ASCA Medium 
Sensitivity Survey (AMSS or the GIS catalog project), 
constructed from data at the Galactic latitude of 
|b| > 10 deg observed from 1993 May to 1996December. 
The catalog utilized 369 combined fields, and contains 
1345 sources with the detection significance above 5 
sigma either in the survey bands of 0.7-7 keV, 2-10 keV, 
and 0.7-2 keV, including target sources. For each source, 
the ASCA source name, position, a 90% error radius, count 
rates in the three bands, detection significances, fluxes, 
a hardness ratio are provided. Statistics properties of 
selected 825 serendipitous sources and results from cross 
correlation with other exiting catalogs are briefly summarized.