A precise and accurate determination of the cosmic microwave background temperature at z = 0.89

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Volume 551 (March 2013)

A&A, 551 (2013) A109

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Table 1

Summary of the observations.

Date	Telescope	Band	Frequency	δV^a	σ ^b	I_bg(SW)^c	R ^d	Notes
			(GHz)	(km s^-1)	(10^-3)

2011 Jul. 24	PdBI	3 mm	93.0–96.6	–/2.0^e	–/2.3^e	0.416 ± 0.006	1.40 ± 0.03	Total flux = 2.6 Jy
2011 Jul. 27	ATCA	7 mm	44.8–48.9	6.3	2.0	0.402 ± 0.003	1.49 ± 0.01
2011 Jul. 27	ATCA	3 mm	90.8–96.4	3.2	2.8	0.397 ± 0.004	1.52 ± 0.02
2011 Aug. 17	PdBI	2 mm	140.2–143.8	4.1/1.3^e	4.5/6.8^e	0.437 ± 0.010	1.29 ± 0.05	Total flux = 2.1 Jy

Notes.

^(a)

Velocity resolution for the HCO⁺ lines.

^(b)

Noise level normalized to the total continuum (NE+SW images).

^(c)

Fraction of the total continuum intensity corresponding to the SW image, measured on the saturated part of the spectra between −7 km s^-1 and +7 km s^-1.

^(d)

Magnification factor R = I_bg(NE)/I_bg(SW), assuming no flux arises from other components.

^(e)

Corresponding to the WIDEX and narrow-band correlator output, respectively.

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