论文标题
蛇形区域的原始磁盘质量
Protostellar and Protoplanetary Disk Masses in the Serpens Region
论文作者
论文摘要
We present the results from an Atacama Large Millimeter/Submillimeter Array (ALMA) 1.3 mm continuum and $^{12}$CO ($J=2-1$) line survey spread over 10 square degrees in the Serpens star-forming region of 320 young stellar objects, 302 of which are likely members of Serpens (16 Class I, 35 Flat spectrum, 235 Class II, and 16 Class III).从连续数据中，我们得出了磁盘尘埃质量，并表明它们从I级到平坦的频谱到II级来源有系统地下降。磁盘质量分布由恒星进化状态分组，类似于其他年轻人（$ <3 $ MYR）区域，表明恒星形成区域的大规模环境不会强烈影响其整体磁盘尘埃质量。人群之间的这些比较加强了先前的结论，即在所有进化阶段，奥菲丘斯星形形成区域中的磁盘都有异常低的质量。此外，我们发现了一个深层嵌入的原始恒星，该原始恒星尚未记录在文献中的其他地方，并且从CO线数据中，我们在这里分类了15个Protostellar流出。
We present the results from an Atacama Large Millimeter/Submillimeter Array (ALMA) 1.3 mm continuum and $^{12}$CO ($J=2-1$) line survey spread over 10 square degrees in the Serpens star-forming region of 320 young stellar objects, 302 of which are likely members of Serpens (16 Class I, 35 Flat spectrum, 235 Class II, and 16 Class III). From the continuum data, we derive disk dust masses and show that they systematically decline from Class I to Flat spectrum to Class II sources. Grouped by stellar evolutionary state, the disk mass distributions are similar to other young ($<3$ Myr) regions, indicating that the large scale environment of a star-forming region does not strongly affect its overall disk dust mass properties. These comparisons between populations reinforce previous conclusions that disks in the Ophiuchus star-forming region have anomalously low masses at all evolutionary stages. Additionally, we find a single deeply embedded protostar that has not been documented elsewhere in the literature and, from the CO line data, 15 protostellar outflows which we catalog here.
