The spectral index-flux density relation for extragalactic radio sources selected at metre and decametre wavelengths

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Volume 675 (July 2023)

A&A, 675 (2023) L3

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Table 1.

Overview of the analysis results for the VCSS_NVSS combination, for different flux density ranges or bins (Col. 1) whose median values (mJy) are shown in Col. 2.

Range/bin	Range of S_340 MHz	S_340 MHz(median)	Number	(median)	ND
(0)	(1)	(2)	(3)	(4)	(5)
All sources	200.0–135 306 mJy	461	42 890	−0.811 ± 0.003	1272

R1	200.0−235.7 mJy	218	3574	(−0.765) −0.763 (−0.760)	45
R2	235.7–269.9 mJy	252	3575	(−0.782) −0.778 (−0.775)	55
R3	269.9–307.5 mJy	288	3573	(−0.792) −0.787 (−0.782)	64
R4	307.5–350.0 mJy	328	3574	(−0.795) −0.791 (−0.786)	59
R5	350.0–400.5 mJy	374	3575	(−0.795) −0.789 (−0.783)	85
R6	400.5–461.1 mJy	430	3573	(−0.808) −0.801 (−0.794)	107
R7	461.1–540.1 mJy	498	3574	(−0.808) −0.800 (−0.792)	119
R8	540.1–648.3 mJy	590	3575	(−0.821) −0.815 (−0.808)	125
R9	648.3–803.2 mJy	716	3574	(−0.823) −0.814 (−0.806)	132
R10	803.2–1071.4 mJy	921	3574	(−0.834) −0.825 (−0.816)	148
R11	1071.4–1676.3 mJy	1299	3575	(−0.850) −0.840 (−0.828)	167
R12	1676.3–135 306 mJy	2547	3574	(−0.862) −0.851 (−0.838)	166

Notes. Column 3 gives the number of sources in the respective bins. The corresponding median spectral indices are listed in Col. 4, as explained in Sect. 3.1. In Col. 5 number of NVSS non-detected(ND) sources are listed, as explained in Sect. 2.

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