A Herschel resolved far-infrared dust ring around HD 207129

Open Access

Table 4

Measurement of the disc extent before (left – the HWHM of a Gaussian fitted to the source brightness profile) and after (right – the radial extent of annulus peak brightness) deconvolution, and the inclination and position angle of the disc at all three wavelengths.

	Wavelength
	70 μm		100 μm		160 μm

Semi-major axis [′′]	14.5	9.0	14.0	9.0	17.0	8.5
Semi-major axis [AU]	232	144	224	144	272	136
Semi-minor axis [′′]	8.5	4.0	8.5	4.5	12.0	4.0
Semi-minor axis [AU]	136	64	136	72	192.0	64
Position angle^a [°]	120		122		120
Inclination^b [°]	54	64	53	60	45	62

Notes.

^(a)

The disc position angles are the same in both original and deconvolved images.

^(b)

The disc minor axis is not resolved at 160 μm in the original images.

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