Starburst galaxies have strong star formation activity and generate large scale out ows which eject a huge amount of gas mass. This process affects galaxy activity, and therefore, the detailed study of nearby starburst galaxies could provide valuable information for the study of distant ones. So far there have been only a few studies of galactic-scale molecular out ows due to the sensitivity limitation of telescopes. Our study provides two nearby examples, NGC 2146 and NGC 3628. We used Nobeyama Millimeter Array (NMA) CO(1-0) data, Chandra soft X-ray data, and NMA 3 mm data to study the kinematics of molecular outflows, their interaction with ionized outflows, and the star forming activity in the starburst region. We found that the gas ejected through molecular outflows is much more significant than that used to form stars.

ABSTRACT
1. INTRODUCTION
2. OBSERVATIONS AND ARCHIVAL DATA
    2.1. NMA CO(1-0) Observations
    2.2. Chandra X-ray Archival Data
3. RESULTS AND DISCUSSION
    3.1. The Properties and Kinetics of Molecular Outflows andSuperbubbles
    3.2. The Mechanism to Push Molecular Outflows
    3.3. The Star Forming Activities in Starburst Region
    3.4. The Significance of Molecular Outflows
4. CONCLUSIONS
REFERENCES

• An-Li Tsai(Institute of Astronomy)
• Satoki Matsushita(Institute of Astronomy and Astrophysics)