论文标题
a 16 au二进制级别0 Protostar L1157 mms
A 16 au Binary in the Class 0 Protostar L1157 MMS
论文作者
论文摘要
我们介绍了VLA对0类Protostar L1157 mms的观察，分辨率为〜0.04”（14 au）。我们检测到L1157 mms中的两个来源，并将这些来源解释为二元源，并将其分离为〜16 au的材料围绕〜16 au的材料。在内部50 au中，该系统在50 au中的分离。观察到的粉尘发射。可能具有动态重要的磁场的信封。
We present VLA observations toward the Class 0 protostar L1157 MMS at 6.8 mm and 9 mm with a resolution of ~0.04" (14 au). We detect two sources within L1157 MMS and interpret these sources as a binary protostar with a separation of ~16 au. The material directly surrounding the binary system within the inner 50 au radius of the system has an estimated mass of 0.11 M_sun, calculated from the observed dust emission. We interpret the observed binary system in the context of previous observations of its flattened envelope structure, low rates of envelope rotation from 5000 to 200 au scales, and an ordered, poloidal magnetic field aligned with the outflow. Thus, L1157 MMS is a prototype system for magnetically-regulated collapse and the presence of a compact binary within L1157 MMS demonstrates that multiple star formation can still occur within envelopes that likely have dynamically important magnetic fields.
