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arXiv 1005.5147astro-ph.SR
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在远红外中分辨碎片盘:来自DEBRIS调查的早期亮点

Resolving debris discs in the far-infrared: early highlights from the DEBRIS survey

DEBRIS Collaboration, Brenda Matthews, Bruce Sibthorpe, Grant Kennedy, Neil Phillips, Laura Churcher, Gaspard Duchêne, Jane Greaves, Jean-Francois Lestrade, Ama… 展开作者

DEBRIS Collaboration, Brenda Matthews, Bruce Sibthorpe, Grant Kennedy, Neil Phillips, Laura Churcher, Gaspard Duchêne, Jane Greaves, Jean-Francois Lestrade, Amaya Moro-Martin, Mark Wyatt, Pierre Bastien, Andy Biggs, Jerome Bouvier, Harold Butner, Bill Dent, James Di Francesco, Jochen Eislöffel, James Graham, Paul Harvey, Peter Hauschildt, Wayne Holland, Jonti Horner, Eduardo Ibar, Rob Ivison, Doug Johnstone, Paul Kalas, JJ Kavelaars, David Rodriguez, Stephane Udry, Paul van der Werf, David Wilner, Ben Zuckerman

摘要:

我们目前的结果,从最早的观测碎片,赫歇尔的关键方案进行体积和通量有限的调查,碎片盘在A型通过M型恒星。PACS图像(从斩波/点头或扫描模式观测)在100和160微米的两个A型恒星和一个F型恒星:β狮子座,β UMa和eta Corvi。这三颗恒星都是已知的光盘宿主。赫歇尔在空间上解析了所有三颗恒星周围的尘埃排放(在β Uma的情况下,稍微),提供了关于接近11 pc大小与太阳系相当的圆盘的新信息。我们结合这些数据与现有的流量密度测量的光盘,以完善的SED和获得的分数光度,温度和半径的光盘的估计。

英文摘要:

We present results from the earliest observations of DEBRIS, a Herschel Key Programme to conduct a volume- and flux-limited survey for debris discs in A-type through M-type stars. PACS images (from chop/nod or scan-mode observations) at 100 and 160 micron are presented toward two A-type stars and one F-type star: beta Leo, beta UMa and eta Corvi. All three stars are known disc hosts. Herschel spatially resolves the dust emission around all three stars (marginally, in the case of beta UMa), providing new information about discs as close as 11 pc with sizes comparable to that of the Solar System. We have combined these data with existing flux density measurements of the discs to refine the SEDs and derive estimates of the fractional luminosities, temperatures and radii of the discs.

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