Chandra HRC and HST observations of NGC 6240:: resolving the active galactic nucleus and starburst

被引：37

作者：

Lira, P ^{[1
]}

Ward, MJ

Zezas, A

Murray, SS

机构：

[1] Univ Leicester, Dept Phys & Astron, Leicester LE1 7RH, Leics, England

[2] Univ Chile, Dept Astron, Santiago, Chile

[3] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2002年 / 333卷 / 03期

关键词：

galaxies : active; galaxies : individual : NGC 6240; galaxies : starburst; X-rays : galaxies;

D O I：

10.1046/j.1365-8711.2002.05456.x

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present high spatial resolution X-ray Chandra HRC and HST WFPC2 Halpha observations of the prototypical infrared-luminous galaxy NGC 6240. The central region of this system shows a remarkably complex morphology, with filaments and loops observed in the optical and X-rays. The total X-ray luminosity is dominated by the extended emission. Both nuclei are clearly detected in the HRC image and both appear to be extended. The energetics of the nuclei imply that the southern nucleus is the more plausible counterpart to the obscured active galactic nucleus. The overall spectral energy distribution of the galaxy is in good agreement with a blend of starburst and AGN components that have similar bolometric luminosities, L (bol) similar to5x10(45) erg s(-1), with the starburst dominating the observed continuum in the near-infrared (K band), optical and soft X-ray bands.

引用

页码：709 / 714

页数：6

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