Mid-infrared dust in two nearby radio galaxies, NGC 1316 (Fornax A) and NGC 612 (PKS 0131-36)

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Table 2

WISE one-sigma isophotal-aperture photometry of NGC 1316.

Band	Flux density^a	Magnitude^b	R _iso ^c	R _eff ^d	SB _eff ^e	C ^f	SB _central ^g	PA ^h	AR ⁱ
	(mJy)	(mag)	(arcsec)	(arcsec)	(mag arcsec^-2)		(mag arcsec^-2)	(°)

W1	2843.10 ± 29.82	5.08 ± 0.01	761.1	101.3	16.61	7.66	13.58	34.7	0.65
W2	1488.78 ± 15.62	5.15 ± 0.01	588.7	93.4	16.50	7.05	13.61	34.7	0.65
W3	449.90 ± 4.78	4.53 ± 0.01	188.0	62.2	14.82	5.54	12.67	34.7	0.65
W4	341.84 ± 4.27	3.46 ± 0.01	101.6	39.5	12.73	4.79	11.98	34.7	0.65

Notes.

^(a)

Integrated flux density. Note that the quoted uncertainties do not include the uncertainty in the absolute calibration, which ranges from 2.4−5.7% depending on the band (see Sect. 4.4h/vii of the WISE All Sky Explanatory Supplement, Cutri et al. 2012).

^(b)

Integrated Vega magnitude.

^(c)

1σ isophotal radius or semi-major axis for the aperture photometry.

^(d)

Effective (half-light) radius.

^(e)

Effective (half-light) surface brightness.

^(f)

Concentration index (75% to 25% light ratio).

^(g)

Central surface brightness.

^(h)

and

⁽ⁱ⁾

are the position angle and axis ratio of the W1 3σ isophote.

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