Recent star formation in the Lupus clouds as seen by Herschel
Recent star formation in the Lupus clouds as seen by Herschel
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赫歇尔观测到的狼疮云中最近的恒星形成
DOI：
10.1051/0004-6361/201219511
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发表时间：
2012
影响因子：
6.5
通讯作者：
Rygl K
中科院分区：
文献类型：
--
作者：
Rygl K
利用HerschelGould带巡天重点项目获得的Herschel 70 -500μm星图，研究了LupusI、III和IV星云的星星形成历史。通过将新的赫歇尔数据与现有的斯皮策星表相结合，我们获得了一个前所未有的星前源和狼疮云中年轻恒星天体的普查，这使我们能够研究整体星星形成率（SFR）和效率（SFE）。高SFE的狼疮III，其减少的SFR，其大量的前主序星相对于原始和星前来源，表明狼疮III是最进化的云，并在经历了一个主要的星星形成事件在过去，现在正在接近其当前的恒星形成周期的结束。Lupus I目前正在经历一个大型星星形成事件，明显的是SFR的增加，相对于更进化的物体，星前物体的大量数量，以及高灭绝物质的高百分比（例如，AV以上8 mag）。此外，狼疮IV的SFR也在增加;然而，星前源的相对数量要少得多，这表明它的星星形成还没有达到顶峰。
We present a study of the star formation histories of the Lupus I, III, and IV clouds using theHerschel70–500μm maps obtained by theHerschelGould Belt Survey Key Project. By combining the newHerscheldata with the existingSpitzercatalog we obtained an unprecedented census of prestellar sources and young stellar objects in the Lupus clouds, which allowed us to study the overall star formation rate (SFR) and efficiency (SFE). The high SFE of Lupus III, its decreasing SFR, and its large number of pre-main sequence stars with respect to proto- and prestellar sources, suggest that Lupus III is the most evolved cloud, and after having experienced a major star formation event in the past, is now approaching the end of its current star-forming cycle. Lupus I is currently undergoing a large star formation event, apparent by the increasing SFR, the large number of prestellar objects with respect to more evolved objects, and the high percentage of material at high extinction (e.g., aboveAV≈ 8 mag). Also Lupus IV has an increasing SFR; however, the relative number of prestellar sources is much lower, suggesting that its star formation has not yet reached its peak.
L1689 的水肺调查 ¿
DOI：
10.1111/j.1365-2966.2006.10249.x
发表时间：
2006
影响因子：
4.8
作者：
D. Nutter;D. Ward;P. Andre'
通讯作者：
P. Andre'