论文标题
用空间分辨[NE III]微射流的SZ 102的电离条件揭示了电离条件
Revealing Ionization Conditions of Sz 102 with Spatially Resolved [Ne III] Microjets
论文作者
论文摘要
来自小型微夹的禁止的霓虹灯发射线可以在低质量的年轻恒星系统中探测高能过程。我们使用哈勃太空望远镜成像仪（HST/stis）以〜0”的空间分辨率（HST/STIS）从经典的T Tauri Star SZ 102中获得了微聚会的空间分辨[NE III]光谱。 〜0“ .24。[NE III]微射流的空间分布和程度与与基部接近离子的喷气相一致，随后在更长的时间尺度上重新组合。Caii H和K线也从红移微吉尔（Redshifted Microjet）中检测到与一半的一半宽度，该线路完全均匀地限制了〜170 km/s/s的一部分，该线路是一致的。 300公里/s宽的恒星组件。重新连接星系系统中的事件，以维持观察到的[NE III]通量。
Forbidden neon emission lines from small-scale microjets can probe high-energy processes in low-mass young stellar systems. We obtained spatially resolved [Ne III] spectra of the microjets from the classical T Tauri Star Sz 102 using the Hubble Space Telescope Imaging Spectrograph (HST/STIS) at a spatial resolution of ~0".1. The blueshifted and redshifted [Ne III] emission both peak in intensity within ~0".1 of the star and gradually decay along the flow outward to ~0".24. The spatial distribution and extent of the [Ne III] microjet is consistent with a jet that is ionized close to the base and subsequently recombines on a longer timescale than the flow time. Ca II H and K lines are also detected from the redshifted microjet with a line full-width at half-maximum of ~170 km/s, consistent with those of other forbidden emission lines, atop a 300-km/s wide stellar component. The launching radius of the Sz 102 jet, inferred from the observed line centroids and the range of inclination angles and stellar masses from the literature, is on the order of ~0.03 au. The possible proximity of the launching region to the star allows immediate ionization without distance dilution from the circumstellar ionization sources, most likely keV X-ray flares generated by magnetic reconnection events in the star-disk system, to sustain the observed [Ne III] flux.
