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arXiv 1010.0787astro-ph.CO
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赫歇尔空间天文台观测到的M87的远红外视图

The far-infrared view of M87 as seen by the Herschel Space Observatory

M. Baes, M. Clemens, E. M. Xilouris, J. Fritz, W. D. Cotton, J. I. Davies, G. J. Bendo, S. Bianchi, L. Cortese, I. De Looze, M. Pohlen, J. Verstappen, H. Bohrin… 展开作者

M. Baes, M. Clemens, E. M. Xilouris, J. Fritz, W. D. Cotton, J. I. Davies, G. J. Bendo, S. Bianchi, L. Cortese, I. De Looze, M. Pohlen, J. Verstappen, H. Bohringer, D. J. Bomans, A. Boselli, E. Corbelli, A. Dariush, S. di Serego Alighieri, D. Fadda, D. A. Garcia-Appadoo, G. Gavazzi, C. Giovanardi, M. Grossi, T. M. Hughes, L. K. Hunt, A. P. Jones, S. Madden, D. Pierini, S. Sabatini, M. W. L. Smith, C. Vlahakis, S. Zibetti

备注：
4 pages, 2 figures, proceedings IAU Symposium 275 (Jets at all scales)
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摘要：

来自附近射电星系M87的远红外辐射的起源仍然是一个有争议的问题。一些研究发现了由于热尘埃发射而导致的远红外过量的证据，而另一些研究则提出，远红外发射可以用同步辐射来解释，而不需要额外的尘埃发射成分。作为赫歇尔室女星系团巡天（HeViCS）的一部分，我们用PACS和SPIRE观测了M87。我们比较新的赫歇尔数据与同步加速器模型的基础上，红外，亚毫米和无线电数据调查远红外发射的起源。我们发现，这两个综合SED和赫歇尔表面亮度图是充分解释同步辐射。与之前的说法不同，我们没有发现M87中弥漫尘埃成分的证据。

英文摘要：

The origin of the far-infrared emission from the nearby radio galaxy M87 remains a matter of debate. Some studies find evidence of a far-infrared excess due to thermal dust emission, whereas others propose that the far-infrared emission can be explained by synchrotron emission without the need for an additional dust emission component. We observed M87 with PACS and SPIRE as part of the Herschel Virgo Cluster Survey (HeViCS). We compare the new Herschel data with a synchrotron model based on infrared, submm and radio data to investigate the origin of the far-infrared emission. We find that both the integrated SED and the Herschel surface brightness maps are adequately explained by synchrotron emission. At odds with previous claims, we find no evidence of a diffuse dust component in M87.

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