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

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

2010-05-27

arxiv.org/abs/1005.5147v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

to be published in A&A, 5 pages, 2 color figures

Scientific paper

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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