The ionizing radiation field of NGC 4388 and its relation to the extranuclear emission-line regions
The ionizing radiation field of NGC 4388 and its relation to the extranuclear emission-line regions
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NGC 4388 的电离辐射场及其与核外发射线区域的关系
DOI：
10.1086/170992
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发表时间：
1992
期刊：
影响因子：
--
通讯作者：
L. Colina
中科院分区：
文献类型：
--
作者：
L. Colina
利用新的长缝光谱观测资料，研究了NGC 4388及其周围的双核发射线区的电离源特征和扩展发射线区的结构。在NGC 4388核中探测到的[Fe VII] λ6087发射线的测量亮度被解释为存在Nph（≥100 eV）≥2× 1050 photons s-1的强电离源和存在电子密度Ne = 107 cm-3的气体云的证据
New long-slit spectroscopic observations of NGC 4388 and the extranuclear emission line regions around it are used to investigate the characteristics of the ionizing source and the structure of the extended emission-line regions. The measured luminosity of the [Fe VII] λ6087 emission line detected in the nucleus of NGC 4388 is interpreted as evidence for the existence of a powerful ionizing source with N ph (≥100 eV)≥2×10 50 photons s −1 and for the presence of clouds of gas with electron densities N e ≃10 7 cm −3