(Sub)millimetre interferometric imaging of a sample of COSMOS/AzTEC submillimetre galaxies - IV. Physical properties derived from spectral energy distributions

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Volume 597 (January 2017)

A&A, 597 (2017) A5

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Table 3

Radio spectral indices and IR-radio correlation q parameter values.

Source ID		q ^a

AzTEC 1	−0.97 ± 0.37	2.19 ± 0.17
AzTEC 2	−1.83 ± 0.93 ^b	...
AzTEC 3	−1.19 ± 0.32	2.14 ± 0.17
AzTEC 4	>–0.18	<3.19
AzTEC 5	−0.50 ± 0.23	2.46 ± 0.25
AzTEC 6	>–0.69	...
AzTEC 7	−0.68 ± 0.18	2.49 ± 0.09
AzTEC 8	−0.77 ± 0.33	2.82 ± 0.18
AzTEC 9	−0.94 ± 0.70	2.16 ± 0.24
AzTEC 10	<–1.59	> 1.64
AzTEC 11-N	−0.66 ± 0.36	...
AzTEC 11-S	−0.33 ± 0.37	2.63 ± 0.18
AzTEC 12	−0.77 ± 0.29	2.54 ± 0.29
AzTEC 15	>–0.49	<2.65
AzTEC 17a	−0.67 ± 0.66	2.21 ± 0.11
AzTEC 19a	−0.71 ± 0.57	2.35 ± 0.24
AzTEC 21a	−1.04 ± 0.48	2.27 ± 0.17
AzTEC 21b	−0.75 ± 0.05 ^c	> 0.51
AzTEC 24b	−0.78 ± 0.39	2.09 ± 0.19
AzTEC 27	−1.29 ± 0.56	...

Median^d

Notes.

^(a)

The q parameter refers to the total-IR (λ_rest = 8−1000μm) value, i.e. q ≡ q_TIR.

^(b)

The spectral index for AzTEC 2 refers to a frequency interval between 1.4 and 3 GHz, and is not considered in the statistical analysis.

^(c)

The radio spectral index for AzTEC 21b could not be constrained, and hence it was assumed to be α = −0.75 ± 0.05.

^(d)

The sample median value was derived using all the tabulated values except those for AzTEC 2 and 21b. The quoted uncertainties of the sample medians represent the 16th–84th percentile range.

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