论文标题
紫外线和红外成像中揭示的斯蒂芬五重奏中最小的比例块状恒星形成
Smallest scale clumpy star formation in Stephan's Quintet revealed from UV and IR imaging
论文作者
论文摘要
在最小尺度上，恒星形成团块的空间分布和物理大小提供了有关分层恒星形成（SF）的宝贵信息。在这种情况下，我们使用Astrosat-Uvit和JWST数据报告了〜120 PC的正在进行的SF的位点。由于紫外线辐射是近期SF的直接示踪剂，因此我们从FUV成像中鉴定出了这个紧凑型组中的恒星形成团块，我们用来指导我们检测JWST IR图像上的星形形成区域。 FUV成像揭示了恒星形成区域，在该区域中，我们从较高的JWST的空间分辨率图像中检测到较小的团块，这可能是由PAH分子产生的，而灰尘通过年轻大型恒星的FUV发射而使粉尘电离。该分析揭示了FUV成像数据在可用的最高空间分辨率IR成像中识别恒星形成区域的重要性。
The spatial distribution and physical sizes of star forming clumps at the smallest scales provide valuable information on hierarchical star formation (SF). In this context, we report the sites of ongoing SF at ~120 pc along the interacting galaxies in Stephan's Quintet (SQ) compact group using AstroSat-UVIT and JWST data. Since ultraviolet radiation is a direct tracer of recent SF, we identified star forming clumps in this compact group from the FUV imaging which we used to guide us to detect star forming regions on JWST IR images. The FUV imaging reveals star forming regions within which we detect smaller clumps from the higher spatial resolution images of JWST, likely produced by PAH molecules and dust ionised by FUV emission from young massive stars. This analysis reveals the importance of FUV imaging data in identifying star forming regions in the highest spatial resolution IR imaging available.
