A Study of the Southern Star Formation with a 4m Radio Telescope

星际分子云是研究恒星和恒星集群的形成及其演化的最重要的天体之一。通过这个项目，我们在南方的天空中获得了许多新的分子云视图。在接下来的几年里，我们总结了结果的一部分。Discovery of molecular super-shell candidates ： We have found ~ 15 candidates of molecular super-shell similar to“Carina Flare”， a huge super-shell formed by ~ 20 of supernova explosions。在Centaurus地区，壳-干细胞展示了与大规模恒星形成的地区良好的空间相关性。这一观察表明，Supernova的爆炸发挥了一个重要的作用，在回收银河平面和光环之间的星际物质（如理论天文学家所建议的）。Vela supernova remnant （SNR）中的分子气体的详细研究：我们对分子气体的详细观测， Vela SNR进行了详细观测。CO强度分布显示出与X射线、光学发射和HI发射的良好相关性，建议SNR在许多位置之间的相互作用。This result has an impact on the evolution of snRs and physical process of the ionized shock front.Discovery of small molecular clouds associated with the super giant shell in the LMC ： We identified many molecular clouds with 10 y D15 y D1 solar-masses associated with the super giant shell， LMC4 and 5 in the LMC。恒星集群和HII区域倾向于定位在那些小云中的外壳的侧面。在补充中，在LMC 4和5之间，有大量的云拥有10-D16-D1太阳质量。这些结果建议说，大多数新识别的云被形成为一个通过扩展外壳生成压缩的结果，引导它们在它们中形成恒星，以及它们自己通过超级新成型恒星的扩展生长。

The interstellar molecular cloud is one of the most important astronomical objects to study the formation of stars and stellar clusters and evolution of galaxies. Through this program, we obtained many new views of molecular clouds in the southern sky. In the following, we summarize a part of the results.1. Discovery of molecular super-shell candidates : We have found 〜15 candidates of molecular super-shell similar to "Carina Flare", a huge super-shell formed by 〜20 of supernova explosions. In the Centaurus region, the shell-candidates show good spatial correlation with the massive star forming regions. This observationally indicates that the supernova explosion plays an important role in recycling the interstellar matter between the galactic plane and halo as theoretical astronomers suggested.2. Detailed study of molecular gas in the Vela supernova remnant (SNR) : We made detailed observation of molecular gas toward the nearest SNR, Vela SNR. The CO intensity distribution shows good correlation with those of X-ray, optical emission, and HI emission, suggesting that the interaction between the SNR and molecular gas occurs in many places in the SNR. This result has an impact on the study of the evolution of SNRs and physical process of the ionized shock front.Discovery of small molecular clouds associated with the super giant shell in the LMC : We identified many molecular clouds with 10ィイD15ィエD1 solar-masses associated with the super giant shell, LMC4 and 5 in the LMC. Stellar clusters and HII regions tend to be located on the side facing to the shell in those small clouds. In addition, between the LMC 4 and 5, there are massive clouds having 10ィイD16ィエD1 solar-masses. These results suggest that most of the newly identified clouds are formed as a result of compression by the expanding shell, leading to form stars in them, and that the shell itself grows by the supernova explosions of the newly formed stars.