Systematic search for MOLsphere

虽然水分子被认为只存在于表面温度低于3000 K的恒星中，但它们在温度相当高的恒星中被发现。为了弄清哪些恒星中存在水分子，我们对水分子进行了系统的搜索。由于地球大气层中的水分子被吸收，从正常的观测地点观测天体中的水分子相当困难。我们在5640米的高度上建造了1米的望远镜，观测成为可能。我们发现，对于大麦哲伦星云中的M巨星，随着温度的降低，水分子的存在有增加的趋势，但不是所有的低温星都有水分子。我们还发现水分子存在于一颗高温星星中。

Although water molecules are believed to be present only in stars whose surface temperatures are less than 3000 K, they are discovered in rather high-temperature stars. In order to clarify in which stars do water molecules exist, we made a systematic search for water molecules. Observations of water molecules in celestial objects are rather difficult from normal observational sites because of the absorption of water molecules in the Earth's atmosphere. Observation becomes possible at 5640m altitude where we have built a 1m telescope.We found that for the M giant stars in the Large Magellan Cloud the tendency that the presence of water molecules is increased as the temperature becomes lower but not all low-temperature stars show water molecules. We also found that water molecules are present in one high-temperature star.