Protostellar and Protoplanetary Disk Masses in the Serpens Region
Protostellar and Protoplanetary Disk Masses in the Serpens Region
复制标题
DOI：
10.3847/1538-4357/ac8ff0
复制
发表时间：
2022-04
期刊：
影响因子：
--
通讯作者：
Alexa R. Anderson;Jonathan P. Williams;N. Marel;C. Law;L. Ricci;J. Tobin;Simin Tong
中科院分区：
文献类型：
--
作者：
Alexa R. Anderson;Jonathan P. Williams;N. Marel;C. Law;L. Ricci;J. Tobin;Simin Tong
我们介绍了阿塔卡马大型毫米/亚毫米阵列（阿尔马）1.3 mm连续谱和12 CO（J = 2 − 1）线测量的结果，这些测量分布在巨蛇座恒星形成区的320个年轻恒星中，其中302个可能是巨蛇座的成员（16个I类，35个平谱，235个II类和16个III类）。从连续的数据，我们得到磁盘尘埃质量，并表明，他们系统地下降，从I类到平坦的光谱II类来源。按恒星演化状态分组，星盘的质量分布与其他年轻（<300万年）区域相似，表明恒星形成区域的大尺度环境不会强烈影响其整体星盘尘埃质量特性。这些种群之间的比较加强了以前的结论，即蛇夫座恒星形成区域的圆盘在所有进化阶段都具有非常低的质量。此外，我们发现了一个单一的深嵌入的原恒星，还没有在文献中的其他地方记录，从CO线数据，15个原恒星流出，我们在这里编目。
We present the results from an Atacama Large Millimeter/submillimeter Array (ALMA) 1.3 mm continuum and 12CO (J = 2 − 1) line survey spread over 10 deg2 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.