A search for steep spectrum radio relics and halos with the GMRT

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Table 1:

Source properties and results.
Source Name	RA	Dec	Beam size	$\sigma_{{\rm rms}}$	S₆₁₀^{j, k}	$\alpha_{74~{\rm MHz}}^{1400~{\rm MHz}}$	LAS^h	Redshift
	(J2000)	(J2000)	arcsec	$\mu$ Jy	mJy		arcsec	z
VLSS J0004.9-3457	00 04 53.63	-34 56 34.1	11.4 $\times$ 6.6	73	$158 \pm 16$	$-1.40 \pm 0.04$	116	$0.29 \pm 0.08^{a}$
VLSS J0227.4-1642	02 27 26.74	-16 42 47.2	5.3 $\times$ 4.0	94	$37.0 \pm 6.2$	$-1.50 \pm 0.06$	89	$\ga$ 0.7
VLSS J0250.5-1247	02 50 30.83	-12 47 30.3	9.4 $\times$ 3.7	118	$33.2 \pm 3.3$	$-1.94 \pm 0.07$	21	$\ga$ 0.7
VLSS J0511.6+0254	05 11 37.79	+02 54 19.4	8.7 $\times$ 6.1	139	$98.0 \pm 10.3$	$-1.42 \pm 0.05$	45	$0.20 \pm 0.05^{a}$
VLSS J0516.2+0103	05 16 17.89	+01 03 40.1	8.1 $\times$ 6.5	79	$17.4 \pm 4.4$	$-1.73 \pm 0.06$	35	$\ga$ 0.7
VLSS J0646.8-0722	06 46 52.10	-07 22 37.9	5.7 $\times$ 4.8	63	$120\pm 13$	$-1.70 \pm 0.05$	59	$0.23 \pm 0.06^{a}$
VLSS J0717.5+3745ⁱ	07 17 30.92	+37 45 29.7	8.2 $\times$ 6.0	78	$501 \pm 50$	$-1.15 \pm 0.04$	171	0.5548^f
VLSS J0915.7+2511ⁱ	09 15 41.51	+25 11 48.2	8.6 $\times$ 5.9	134	$194 \pm 21$	$-1.52 \pm 0.04$	63	0.324^c
VLSS J1117.1+7003	11 17 06.46	+70 03 57.1	7.8 $\times$ 4.3	52	$9.1 \pm 0.9$	$-1.87 \pm 0.07$	18	$\ga$ 0.7
VLSS J1133.7+2324	11 33 44.73	+23 24 50.6	6.6 $\times$ 3.9	51	$80.6 \pm 10.1$	$-1.69 \pm 0.06$	84	$0.61 \pm 0.16^{d}$
VLSS J1431.8+1331	14 31 49.90	+13 31 54.1	5.3 $\times$ 4.8	51	$120\pm 13$	$-2.03 \pm 0.05$	101	0.159936^c
VLSS J1515.1+0424ⁱ	15 15 09.18	+04 24 41.1	7.6 $\times$ 5.4	79	$192 \pm 33$	$-1.50 \pm 0.05$	169	0.0972^g
VLSS J1636.5+3326	16 36 34.93	+33 26 33.9	5.2 $\times$ 4.7	40	$16.1 \pm 1.9$	$-1.84 \pm 0.14$	28	$0.65 \pm 0.19^{d}$
VLSS J1710.5+6844	17 10 35.03	+68 44 58.4	8.9 $\times$ 4.7	63	$23.3 \pm 2.8$	$-1.75 \pm 0.06$	45	$0.28 \pm 0.08^{a}$
VLSS J1930.4+1048	19 30 27.19	+10 48 02.5	5.3 $\times$ 4.8	56	$67.4 \pm 7.0$	$-1.90 \pm 0.06$	101	...
VLSS J2043.9-1118	20 43 58.46	-11 18 45.6	5.8 $\times$ 4.2	77	$53.9 \pm 6.3$	$-1.74 \pm0.05$	41	$0.43 \pm 0.15^{b}$
VLSS J2044.7+0447	20 44 43.64	+04 47 24.5	10.5 $\times$ 7.5	202	$57.7 \pm 5.8$	$-1.55 \pm 0.06$	71	$0.46 \pm 0.15^{b}$
VLSS J2122.9+0012	21 22 54.14	+00 12 03.4	5.8 $\times$ 3.8	81	$24.0 \pm 2.4$	$-2.00 \pm 0.08$	12	$\ga$ 1.4
VLSS J2209.5+1546	22 09 32.91	+15 46 29.9	6.9 $\times$ 6.2	64	$36.4 \pm 3.8$	$-1.56 \pm 0.07$	61	$\ga$ 0.7
VLSS J2213.2+3411	22 13 12.45	+34 11 51.6	5.5 $\times$ 4.6	94	$127 \pm 13$	$-1.55 \pm 0.04$	62	$1.6 \pm 0.5^{a, e}$
VLSS J2217.5+5943	22 17 30.39	+59 43 05.3	6.3 $\times$ 4.3	47	$79.9 \pm 8.0$	$-2.20 \pm 0.06$	99	...
VLSS J2229.1-0136	22 29 11.95	-01 36 58.8	8.6 $\times$ 4.2	101	...	...	...	...
VLSS J2241.3-1626	22 41 22.57	-16 25 35.7	6.1 $\times$ 5.8	129	$69.7 \pm 7.3$	$-1.44 \pm 0.06$	47	$\ga$ 0.7
VLSS J2341.1+1231	23 41 06.91	+12 31 36.9	5.5 $\times$ 4.4	50	$117 \pm 14$	$-1.70 \pm 0.04$	115	$0.62 \pm 0.15^{b}$
VLSS J2345.2+2157	23 45 15.47	+21 57 55.1	4.8 $\times$ 4.2	63	$79.3 \pm 8.4$	$-2.14 \pm 0.05$	70	$0.23 \pm 0.06^{a}$
VLSS J2357.0+0441	23 57 05.54	+04 41 14.7	7.8 $\times$ 4.9	82	...	...	...	...

^a Redshift estimated using the fitted Hubble-K relation from Willott et al. (2003).
^b Redshift estimated using the fitted Hubble-R relation from de Vries et al. (2007).
^c Spectroscopic redshift from SDSS DR7.
^d Median photometric redshift from SDSS DR7.
^e Using the $K_{\rm s}$ band magnitude from De Breuck et al. (2002b).
^f Edge et al. (2003).
^g Struble & Rood (1999).
^h LAS = largest angular size.
ⁱ Resolved out in the 1.4 GHz FIRST survey.
^j Fluxes are extracted from the regions indicated in the figures by dotted lines.
^k For the compact sources (LAS $< 45\hbox{$^{\prime\prime}$ }$ ) the fluxes were measured by fitting single Gaussians to the sources after convolving the maps to the 45 $^{\prime \prime }$ NVSS resolution.

Source LaTeX | All tables | In the text

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