11.  Xia, Xiaoyang (夏晓阳) 

       National Astronomical Observatories

       Chinese Academy of Sciences

       A20 Datun Road, Chaoyang

       Beijing 100012

       P.R. China

       Email: xyxia@bao.ac.cn

       Fax: 86-22-23540133

    Title of talk: The morphology of luminous infrared Galaxies in the local universe

    Abstract: We study the morphology, stellar mass and star formation rate of 159 local luminous infrared galaxies (LIRGs) using multi-color images from Data Release 2 (DR2) of the Sloan Digital Sky Survey (SDSS). The LIRGs are selected from a cross-correlation analysis between the {\sl IRAS} survey and SDSS. They are all brighter than 15.9 mag in the $r$-band and below redshift $\sim 0.1$, and can be reliably classified morphologically. The fractions of interacting/merging and normal disk galaxies are 48\% and 40\% respectively. The normal disk galaxies tend to have lower infrared luminosity than interacting/merging galaxies and hence become an increasingly important population at lower infrared luminosity. Our results complement and confirm the morphology evolution trend of LIRGs found by Melbourne, Koo \& Le Floc'h (2005) from $z \sim 1$ to $z \sim 0.1$. We also find that about 75\% of disk galaxies in the local LIRGs are barred, indicating that bars play an important role in triggering star formation rates $\ga 20\myear$ in the local universe.   

12.  Xiang Shou-Ping  (向守平)

       Center for Astrophysics

       University of Science and Technology of China

       96 Jinzai Lu

       Hefei, Anhui 230026

       P.R.China

       Email:  xpxiang@ustc.edu.cn

       Fax: 86-551-3601861

    Title of talk: TBA

     Abstract: