Planck 2015 results - XXV. Diffuse low-frequency Galactic foregrounds

Planck 2015 results

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Table 1

Summary of radio data sets used, with selected properties.

Map	Instrument	ν₀^a	η_ΔT(ν₀) ^b	σ _I ^c	w₀ ^d	w₁ ^d	w₂ ^d	w₃ ^d
		[GHz]		[μK]

Haslam	Effelsberg/Jodrell/Parkes	0.408	1.000	3 × 10⁶	...	...	...	...
K band	WMAP	22.8	0.987	6.00	...	1.007	...	1.549
30 GHz	Planck LFI	28.4	0.979	2.49	1.013	...	3.585	−0.485
Ka band	WMAP	33.0	0.972	4.44	...	...	...	−0.788
Q band	WMAP	40.6	0.958	3.86	...	...	...	−1.342
44 GHz	Planck LFI	44.1	0.951	2.80	...	...	−9.571	−2.457
V band	WMAP	60.8	0.910	4.32	...	...	...	...
70 GHz	Planck LFI	70.4	0.881	2.22	...	...	...	...
W band	WMAP	93.5	0.802	5.14	...	...	...	...
100 GHz	Planck HFI	100	0.777	0.86	...	...	...	...
143 GHz	Planck HFI	143	0.592	0.37	−1.052	−1.088	6.194	3.648
217 GHz	Planck HFI	217	0.334	0.51	...	...	...	...
353 GHz	Planck HFI	353	0.075	1.69	0.039	0.038	−0.208	−0.126
545 GHz	Planck HFI	545	0.006	0.51^e	...	...	...	...
857 GHz	Planck HFI	857	6 × 10^-5	0.48^e	...	...	...	...

Notes.

^(a)

Reference frequency.

^(b)

Conversion factor from differential thermodynamic temperature to Rayleigh-Jeans brightness temperature.

^(c)

Median rms per beam for the 1deg smoothed Stokes I maps.

^(d)

Weights for the linear combination images shown in Figs. 1a and 2a (w₀), Fig. 2b (w₁), Fig. 3a (w₂), and Fig. 3b (w₃).

^(e)

Units MJy sr^-1.

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