论文标题
扩展的绿色物体G19.88-0.53的多波长研究：揭示原始群集
Multiwavelength investigation of extended green object G19.88-0.53: Revealing a protocluster
论文作者
论文摘要
本文介绍了与扩展的绿色物体相关的恒星形成的多波长分析。 G19.88-0.53具有多个检测到的无线电和毫米组件，揭示了具有原始群集而不是一个庞大的年轻恒星物体。我们使用印度升级的巨型电视射击望远镜检测到电离热射流，该望远镜被发现与巨大，密集和热的Alma 2.7 mm核心驱动双极性CO流出有关。近红外光谱与Ukirt-Uist显示出与该区域性质一致的多个冲击激发的H2线。使用ALMA数据对气体运动学的详细研究揭示了G19.88-0.53作为一个活跃的原始群集，具有高质量恒星形成的高质量恒星组成部分，这些成分涵盖了从积聚阶段的热芯到驱动多个外流到可能的Uchii区域的核心的广泛进化谱。
A multiwavelength analysis of star formation associated with the extended green object, G19.88-0.53 is presented in this paper. With multiple detected radio and millimetre components, G19.88-0.53 unveils as harbouring a protocluster rather than a single massive young stellar object. We detect an ionized thermal jet using the upgraded Giant Meterwave Radio Telescope, India, which is found to be associated with a massive, dense and hot ALMA 2.7 mm core driving a bipolar CO outflow. Near-infrared spectroscopy with UKIRT-UIST shows the presence of multiple shock-excited H2 lines concurrent with the nature of this region. Detailed investigation of the gas kinematics using ALMA data reveals G19.88-0.53 as an active protocluster with high-mass star forming components spanning a wide evolutionary spectrum from hot cores in accretion phase to cores driving multiple outflows to possible UCHII regions.
