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arXiv 1005.1889astro-ph.CO
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赫歇尔空间天文台观测到的M81中的尘埃

The Herschel Space Observatory view of dust in M81

G. J. Bendo, C. D. Wilson, M. Pohlen, M. Sauvage, R. Auld, M. Baes, M. J. Barlow, J. J. Bock, A. Boselli, M. Bradford, V. Buat, N. Castro-Rodriguez, P. Chanial,… 展开作者

G. J. Bendo, C. D. Wilson, M. Pohlen, M. Sauvage, R. Auld, M. Baes, M. J. Barlow, J. J. Bock, A. Boselli, M. Bradford, V. Buat, N. Castro-Rodriguez, P. Chanial, S. Charlot, L. Ciesla, D. L. Clements, A. Cooray, D. Cormier, L. Cortese, J. I. Davies, E. Dwek, S. A. Eales, D. Elbaz, M. Galametz, F. Galliano, W. K. Gear, J. Glenn, H. L. Gomez, M. Griffin, S. Hony, K. G. Isaak, L. R. Levenson, N. Lu, S. Madden, B. O'Halloran, K. Okumura, S. Oliver, M. J. Page, P. Panuzzo, A. Papageorgiou, T. J. Parkin, I. Perez-Fournon, N. Rangwala, E. E. Rigby, H. Roussel, A. Rykala, N. Sacchi, B. Schulz, M. R. P. Schirm, M. W. L. Smith, L. Spinoglio, J. A. Stevens, S. Sundar, M. Symeonidis, M. Trichas, M. Vaccari, L. Vigroux, H. Wozniak, G. S. Wright, W. W. Zeilinger

摘要:

我们使用赫歇尔空间天文台的数据,将观测约束的峰值和瑞利-金斯斜率的尘埃排放在附近的螺旋星系M81中观察到的70-500微米。我们发现,160和500微米之间的波段的比率主要取决于半径,但70至160微米的发射率没有显示出明显的依赖于表面亮度或半径。这些结果以及光谱能量分布的分析表明,160-500微米的发射痕迹15-30 K的尘埃加热的演化恒星在隆起和光盘,而70微米的发射包括尘埃加热的活动星系核和年轻的恒星形成区。

英文摘要:

We use Herschel Space Observatory data to place observational constraints on the peak and Rayleigh-Jeans slope of dust emission observed at 70-500 microns in the nearby spiral galaxy M81. We find that the ratios of wave bands between 160 and 500 microns are primarily dependent on radius but that the ratio of 70 to 160 micron emission shows no clear dependence on surface brightness or radius. These results along with analyses of the spectral energy distributions imply that the 160-500 micron emission traces 15-30 K dust heated by evolved stars in the bulge and disc whereas the 70 micron emission includes dust heated by the active galactic nucleus and young stars in star forming regions.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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