Erratum: “Detection of a Super-Star Cluster as the Ionizing Source in the Low-Luminosity Active Galactic Nucleus NGC 43031” (ApJ, 579, 545 [2002])
Erratum: “Detection of a Super-Star Cluster as the Ionizing Source in the Low-Luminosity Active Galactic Nucleus NGC 43031” (ApJ, 579, 545 [2002])
复制标题
勘误表：“在低光度活动星系核 NGC 43031 中检测到作为电离源的超级星团” (ApJ, 579, 545 [2002])
DOI：
10.1086/345934
复制
发表时间：
2002
期刊：
影响因子：
--
通讯作者：
Elena Jiménez Bailón
中科院分区：
文献类型：
--
作者：
L. Colina;R. G. González Delgado;J. Mas;C. Leitherer;Elena Jiménez Bailón
低光度AGN (LLAGN) NGC 4303的HST UV STIS成像和光谱已经确定了这个星系先前探测到的紫外线明亮的核心，作为一个紧凑，大质量和明亮的恒星团。该星团大小（FWHM）为3.1 pc，紫外光度对数L (1500 a}(erg/s/ a)= 38.33，与螺旋星系和星暴星系的核周区域相似，属于核超级星团（SSC）。紫外光谱显示了由大质量年轻恒星的风产生的特征的宽Cygni P线，最适合于4百万年前瞬时爆发产生的1e5 Msol大质量星团的光谱能量分布。在紫外线中没有发现与吸积黑洞有关的额外非热电离源的证据。我们假设，至少一些螺旋中的llagn可以理解为演化的SSC和低辐射效率的黑洞（BH）共同释放的电离辐射的结果，共存于内部的几个秒差距区域。
HST UV STIS imaging and spectroscopy of the low luminosity AGN (LLAGN) NGC 4303 have identified the previously detected UV-bright nucleus of this galaxy, as a compact, massive and luminous stellar cluster. The cluster with a size (FWHM) of 3.1 pc, and an ultraviolet luminosity log L (1500 A}(erg/s/A)= 38.33 is identified as a nuclear super star cluster (SSC) like those detected in the circumnuclear regions of spirals and starburst galaxies. The UV spectrum showing the characteristic broad P Cygni lines produced by the winds of massive young stars, is best fitted by the spectral energy distribution of a massive cluster of 1e5 Msol generated in an instantaneous burst 4 Myr ago. No evidence for an additional non-thermal ionizing source associated with an accreting black hole is detected in the ultraviolet. We hypothesize that at least some LLAGNs in spirals could be understood as the result of the combined ionizing radiation emitted by an evolving SSC and a black hole (BH) accreting with low radiative efficiency, coexisting in the inner few parsecs region.