THE STRUCTURE OF THE [O III] NUCLEAR REGION IN THE SEYFERT 2 GALAXY F-427 (ESO 263-G13)

被引：4

作者：

FAIRALL, AP ^{[1
]}

MEABURN, J ^{[1
]}

机构：

[1] UNIV MANCHESTER,DEPT ASTRON,MANCHESTER M13 9PL,LANCS,ENGLAND

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 1985年 / 216卷 / 02期

关键词：

D O I：

10.1093/mnras/216.2.439

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A spatial explanation is sought for the enigmatic [O m] line profile variations found at SAAO in 1983. Offset slit spectroscopy has been carried out at SAAO and the Manchester Echelle Spectrograph on the Anglo-Australian Telescope used in 1-arcsec seeing to obtain both a long-slit high-dispersion spectrum and direct (narrow-band) images. Striking spatial differences are revealed within an [O in] nucleus ^1.5 arcsec E-W and —0.8 arcsec N-S. The two peaks in the line profile show a spatial separation and each has its own associated broad component, so that two Seyfert 2 nuclei (separation ^600 pc) exist within a common host galaxy. The observations offer insight into Seyfert 2 structure and dynamics, but the 1983 variations remain an enigma - at times, only one of the nuclei is recorded, yet the close proximity of the other nucleus makes this impossible. © Royal Astronomical Society.

引用

页码：439 / 446

页数：8

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