论文标题
半人马座的紫色视图；关于积极反馈的详细研究
UVIT view of Centaurus A; a detailed study on positive AGN feedback
论文作者
论文摘要
$ \需要{Mediawiki-Texvc} $活跃银河核（AGN）中心的超质量黑洞会产生相对论的射流，从而影响AGN宿主的恒星形成特征。紫外线（UV）带中的观测可以很好地看出AGN喷气机对恒星形成的影响。在这里，我们介绍了北部星形区域（NSR）的恒星形成特性的普查，该特性跨越了大约20 kpc的大型无线电源Centaurus托管的巨型椭圆形的Galaxy NGC NGC 5128。在该地区，我们确定了与CEN相关的352 UV来源，并在该区域中确定了$ 1.5 $ 1.5 $ <$ 1.5 $ <$ <$ <$ <$ <$ <$ <$ <$ <板载板上的成像望远镜（UVIT）。这些观察结果是在一个远处（fuv; $λ_ {\ text {mean}} $ = 1481 $Å$）和三个近硫化物（nuv;带有$λ_{\ text fext {neep {earve}} $ 2196 $ 2196 $，24447 $Å$Å$Å的2196 $ 2196 $ 2196 $，和2792的2196 $ 2196 $ 2196 $，2192 $Å的2196 $ 2196 $，和2792的2196 $ 2196 $ 2196 $ 2196 $，和2792 $Å$Å$Å$Å$Å$Å$Å$Å$ = 1481美元（在紫外线中鉴定出的星形源倾向于朝着Cen A的射流方向，从而暗示了恒星形成的射流触发。将NSR分离为外部区域和内部区域，我们发现内部区域中的恒星比外部区域年轻，这表明这两个区域可能具有不同的恒星形成历史。我们还提供了NSR中的紫外线目录。
$\require{mediawiki-texvc}$ Supermassive black holes at the centre of active galactic nuclei (AGN) produce relativistic jets that can affect the star formation characteristics of the AGN hosts. Observations in the ultraviolet (UV) band can provide an excellent view of the effect of AGN jets on star formation. Here, we present a census of star formation properties in the Northern Star-forming Region (NSR) that spans about 20 kpc of the large radio source Centaurus A hosted by the giant elliptical galaxy NGC 5128. In this region, we identified 352 UV sources associated with Cen A using new observations at an angular resolution of $<$1.5 arcseconds observed with the Ultra-Violet Imaging Telescope (UVIT) onboard AstroSat. These observations were carried out in one far-ultraviolet (FUV; $λ_{\text{mean}}$ = 1481 $Å$) and three near-ultraviolet (NUV; with $λ_{\text{mean}}$ of 2196 $Å$, 2447 $Å$, and 2792 $Å$, respectively) bands. The star-forming sources identified in UV tend to lie in the direction of the jet of Cen A, thereby suggesting jet triggering of star formation. Separating the NSR into Outer and Inner regions, we found the stars in the Inner region to have a relatively younger age than the Outer region, suggesting that the two regions may have different star formation histories. We also provide the UVIT source catalogue in the NSR.
