The Australia Telescope Large Area Survey: 2.3 GHz observations of ELAIS-S1 and CDF-S - Spectral index properties of the faint radio sky

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Table 2

A representative portion of the ATLAS 2.3 GHz source catalogue of the ELAIS-S1 field for illustration purposes. The CDF-S catalogue contains the same information.

ID^a	RA (J2000)	Dec (J2000)	S_{1.4 GHz,hi}	ΔS_{1.4 GHz,hi}	S_{1.4 GHz,lo}	ΔS_{1.4 GHz,lo}	rms_1.4 GHz,lo	S_2.3 GHz	ΔS_2.3 GHz	rms_2.3 GHz			z	Class^b
	deg	deg	mJy	mJy	mJy	mJy	mJy	mJy	mJy	mJy

254	51.770792	–28.650297	1.260	0.084	1.230	0.093	0.069	0.561	0.080	0.075	–1.58	0.11
178	51.621458	–27.427269	2.740	0.145	2.220	0.165	0.122	1.519	0.107	0.075	–0.76	0.11
165	53.319708	–27.941922	1.131	0.054	0.762	0.158	0.153	0.828	0.084	0.073	0.17	0.13	0.685
163	52.470667	–27.492661	2.160	0.116	2.070	0.985	0.980	1.810	0.116	0.073	–0.27	0.95
102	52.561167	–28.566331	0.194	0.037	0.162	0.155	0.154	0.344	0.074	0.072	1.52	0.64
290	53.190750	–28.520756	0.714	0.044	0.598	0.126	0.123	0.400	0.075	0.072	–0.81	0.14	0.211
201	52.399667	–27.950881	1.420	0.087	1.550	0.153	0.132	1.154	0.093	0.072	–0.59	0.06	0.067	SF
150	52.122000	–28.030825	1.810	0.087	1.770	0.281	0.267	1.016	0.088	0.072	–1.12	0.30	0.902
264	52.105750	–27.745814	0.920	0.054	0.745	0.176	0.173	0.674	0.080	0.072	–0.20	0.46
323	52.808292	–28.785917	0.834	0.057	0.818	0.160	0.155	0.544	0.077	0.072	–0.82	0.38	0.140	AGNe

Notes. The columns are as follows: (1) unique ID; (2) degrees of J2000 right ascension; (3) degrees of J2000 declination; (4, 5) 1.4 GHz integrated flux density and flux density error as given in Hales et al. (in prep.); (6–8) integrated flux density, flux density error as calculated using Eq. (1) and local rms noise as measured from the low-resolution 1.4 GHz image; (9–11) integrated flux density, flux density error as calculated using Eq. (1) and local rms noise as measured from the 2.3 GHz image; (12, 13) spectral index calculated from the low-resolution 1.4 GHz flux density and the 2.3 GHz flux density and its error as calculated by Eq. (4); (14, 15) spectroscopic redshift and spectral classification from Mao et al. (2012) if available. The entire table is available at the CDS.

^(a)

Unique only for the respective field (ELAIS-S1 or CDF-S).

^(b)

Spectroscopic classification from Mao et al. (2012). SF indicates an optical spectrum dominated by star formation activity while AGN indicates an optical spectrum typical for AGN (e.g. AGNe for an AGN with characteristic emission lines). E indicates that the spectrum is that of an early-type galaxy and hence the radio emission must originate from an AGN hosted by it.

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