An ALMA survey of submillimetre galaxies in the COSMOS field: The extent of the radio-emitting region revealed by 3 GHz imaging with the Very Large Array

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Volume 602 (June 2017)

A&A, 602 (2017) A54

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Table 2

1.4–3 GHz radio spectral index and 3 GHz brightness temperature statistics.

Parameter		T_B [K]

Mean	...^a	23.2 ± 1.6 (20.4 ± 1.5)
Median	−0.67 (−0.67)^b	12.6 ± 2.0 (12.3 ± 1.9)
Standard deviation	0.51 (0.31)	16.8 (15.7)
95% confidence interval	...^a	20.1–26.3 (17.5–23.3)
IQR	−0.94^c [−0.94−(−0.26)]	5.4–31.0 (5.1–28.3)

Notes. For each parameter, we give a full sample value (based on 115 sources), while the values given in parentheses refer to a sample from which the three VLBA-detections were omitted.

^(a)

The value could not be determined owing to a large number of right-censored data points (61, i.e. 53% of the whole sample).

^(b)

The standard error of the median, which is proportional to the standard error of the mean (see Sect. 3.2), could not be determined owing to a large number of censored data points.

^(c)

Only the 25th percentile could be determined, while the third quartile could not be calculated owing to a large amount of right-censored data.

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