Herschel images of Fomalhaut - An extrasolar Kuiper belt at the height of its dynamical activity

B. Acke; M. Min; C. Dominik; B. Vandenbussche; B. Sibthorpe; C. Waelkens; G. Olofsson; P. Degroote; K. Smolders; E. Pantin; M. J. Barlow; J. A. D. L. Blommaert; A. Brandeker; W. De Meester; W. R. F. Dent; K. Exter; J. Di Francesco; M. Fridlund; W. K. Gear; A. M. Glauser; J. S. Greaves; P. M. Harvey; Th. Henning; M. R. Hogerheijde; W. S. Holland; R. Huygen; R. J. Ivison; C. Jean; R. Liseau; D. A. Naylor; G. L. Pilbratt; E. T. Polehampton; S. Regibo; P. Royer; A. Sicilia-Aguilar; B. M. Swinyard

doi:10.1051/0004-6361/201118581

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Volume 540 (April 2012)

A&A, 540 (2012) A125

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Table 3

Herschel photometry of Fomalhaut.

Band	Integrated	Flux contribution (%)^b
	flux (Jy)^a	Point source	Inner disk	Belt	Blow-out grains

PACS 70 μm	10.8 ± 0.9^c	5	21	74	27
PACS 160 μm	6.2 ± 0.6	2	23	75	7
SPIRE 250 μm	2.7 ± 0.3	2	25	73	3
SPIRE 350 μm	1.1 ± 0.1	2	27	71	2
SPIRE 500 μm	0.50 ± 0.05	2	29	69	2

Notes.

^(a)

Within a circular aperture with a radius of 52′′ (400 AU) around the geometric center of the belt.

^(b)

From the best-fit model.

^(c)

The excess flux at the location of the star is 50 ± 10% of the stellar flux at 70 μm, or 0.17 ± 0.02 Jy.

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