论文标题
HH 32恒星喷气机的发射线数据包
Emission-Line Datacubes of the HH 32 Stellar Jet
论文作者
论文摘要
我们分析了使用Keck Cosmic Web Imager（KCWI）获得的HH 32恒星喷气机中60多个排放线的数据存储。数据涵盖了3586a和6351a之间频谱中较少探索的蓝色部分，并且具有高光谱（R $ \ sim $ 10000）和空间（$ \ sim $ \ simsim $ 1“）的分辨率。该研究包括所有三个主要电离状态，氧气的三个主要电离状态，三个Balmer线条，FE II和FE III的多个诊断，以及第一个诊断的录音，以及第一个Datac exters use and Hensel，以及第一个录制效果。 II $λ$ 4686，CA I $λ$ 3933，Mg I] $λ$ 4571，通常会根据激发量进行分类，并从最高激发离子（HE II，O III）通过中间离子（O I和H II）（i II）和Merging II（Mer）（II）（II）（II）（II）。随着HST图像，您可以提供几个有关流动的新见解，包括弓冲击，部分弓冲击，刺激性冲击，马赫磁盘，喷气偏转冲击，摇摆的喷气机和潜在的冲击前体，最令人惊讶的结果是，在Mach Disk中，Mach Disk的速度成分之一突然增加了尘埃相对于其他景点的景点。因此，喷气式飞机必须加速或夹带灰尘以超过300 km/s的速度，而不会破坏谷物。
We analyze datacubes of over 60 emission lines in the HH 32 stellar jet acquired with the Keck Cosmic Web Imager (KCWI). The data cover the less-explored blue portion of the spectrum between 3586A and 6351A , and have both high spectral (R $\sim$ 10000) and spatial ($\lesssim$ 1" ) resolution. The study includes all three major ionization states of oxygen, three Balmer lines, multiple lines of Fe II and Fe III, as well as the first datacubes ever acquired for important unblended diagnostic lines such as He II $λ$4686, Ca I $λ$3933, and Mg I] $λ$4571. The data cubes generally sort according to excitation, and have a relatively continuous progression from the highest-excitation ions (He II, O III) through the intermediate-excitation ions (O I and H I) to the lowest-excitation ions (Ca II and Mg I). Merging the KCWI cubes with HST images leads to several new insights about the flow, including evidence for bow shocks, partial bow shocks, spur shocks, Mach disks, jet deflection shocks, a wiggling jet, and potential shock precursors. The most surprising result is that one of the velocity components of Fe II in the Mach disk suddenly increases in flux relative to other lines by a factor of two, implying that the Mach disk vaporizes dust in the jet. Hence, jets must accelerate or entrain dust to speeds of over 300 km/s without destroying the grains.
