3rd Italian-Sino Chinese Participants |
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Page 6 of 9
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:
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