A multiwavelength study of an early galaxy group merger in COSMOS revealed by two tailed radio galaxies at z = 0.35

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Table 1.

Flux densities and monochromatic luminosities at 3 GHz for radio sources: 10913 (WAT, BBG), 44, 4092, 1549, 10366, 633, and 528.

Source	F_3 GHz [mJy]	α^( ★ )	L_3 GHz [10²⁴ W Hz⁻¹]
10913	$30_{- 2}^{+ 4}$ $30^{+4}_{-2}$	0.78 ± 0.10	$11 . 9_{- 0.8}^{+ 1.6}$ $11.9^{+1.6}_{-0.8}$
44	$2 . 8_{- 0.4}^{+ 1.0}$ $2.8^{+1.0}_{-0.4}$	0.56 ± 0.16	$1 . 0_{- 0.1}^{+ 0.4}$ $1.0^{+0.4}_{-0.1}$
4092	0.028 ± 0.003	0.73 ± 0.35	0.011 ± 0.002
1549	0.071 ± 0.004	0.73 ± 0.35	0.028 ± 0.003
10366	0.011 ± 0.002	0.73 ± 0.35	0.005 ± 0.001
633	0.121 ± 0.007	0.73 ± 0.35	0.035 ± 0.004
528	0.152 ± 0.008	0.73 ± 0.35	0.061 ± 0.007

Notes. ^( ★ )Spectral index as calculated in Paper II (Vulić et al., in prep.) based on radio flux densities at 5 different frequencies from 325 MHz to 3 GHz (for radio galaxies 10913 and 44) and assumed 0.73 ± 0.35 for point sources (see Section 5.2 for details), corresponding to the average value found for the full 3 GHz population (Smolčić et al. 2017a).

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