论文标题
巨型星系UGC 11973中的年轻恒星综合体
Young Stellar Complexes in the Giant Galaxy UGC 11973
论文作者
论文摘要
我们介绍了晚期巨型螺旋星系UGC 11973中年轻恒星复合物的光度和光谱观测分析的结果。在13个最大的复合物中，UBVRI频带中的光度分析已进行。对于其中一个，周围气体Z = 0.013+-0.005，质量m =（4.6+-1.6）*10^6 msun，以及使用光谱数据评估了恒星复合物t =（2.0+-1.1）*10^6 yr的年龄。结果表明，所有复合物都是巨大的（m> = 1.7*10^5 msun），年轻的恒星组小于3*10^8 yr。
We present results of the analysis of photometric and spectroscopic observations of the young stellar complexes in the late giant spiral galaxy UGC 11973. Photometric analysis in the UBVRI bands have been carried out for the 13 largest complexes. For one of them, metallicity of the surrounding gas Z = 0.013+-0.005, the mass M = (4.6+-1.6)*10^6 Msun, and the age of the stellar complex t = (2.0+-1.1)*10^6 yr were evaluated, using spectroscopic data. It is shown that all complexes are massive (M >= 1.7*10^5 Msun) stellar groups younger than 3*10^8 yr.
