Detections of 21 cm absorption with a blind FAST survey at z ≤ 0.09

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Table 2.

Some basic physical parameters of FAST observations of the H I absorption profiles for UGC 00613, 3C 293 and 4C +27.14.

Radio source	Absorption type	Component	cz_peak	FWHM	S_H I,peak	∫S_H Idv	τ_peak	∫τdv	N_H II
			(km s⁻¹)	(km s⁻¹)	(mJy)	(mJy km s⁻¹)		(km s⁻¹)	(10²⁰cm⁻²K⁻¹)
		1	13987.58	40.34	−23.50	−1016.51	0.23	9.78	0.18T_s
UGC 00613	Associated	2	13957.59	27.03	−64.31	−1826.04	0.84	21.17	0.39T_s
		Total	13957.59	31.74	−69.46	−2842.55	0.96	32.75	0.60T_s

		1	13483.28	29.93	−168.09	−5354.07	0.036	1.16	0.02T_s
3C 293	Associated	2	13458.66	80.60	−141.90	−12164.45	0.031	2.62	0.05T_s
		3	13354.95	110.95	−104.45	−12331.98	0.023	2.65	0.05T_s
		Total	13481.49	61.54	−283.33	−29850.50	0.062	6.47	0.12T_s

		1	18776.96	42.09	−7.98	−357.40	0.87	38.72	0.7T_s
4C +27.14	Associated	2	18755.13	155.74	−3.32	−550.31	0.36	59.51	1.08T_s
		Total	18776.96	54.58	−11.11	−907.70	1.21	98.37	1.79T_s

		1	18790.52	5.20	−53.17	−294.82	0.33	1.82	0.03T_s
NVSS J231240–052547	Unknown	2	18797.77	7.15	−26.10	−198.50	0.15	1.15	0.02T_s
		Total	18797.77	9.12	−54.04	−493.32	0.34	3.01	0.05T_s

		1	19899.88	60.81	−3.70	−239.20	0.097	6.19	0.113T_s
		2	19933.06	26.08	−20.17	−559.72	0.702	17.53	0.319T_s
		3	19960.99	18.78	−17.84	−356.73	0.591	10.81	0.197T_s
NVSS J053118+315412	Associated	4	19994.99	38.18	−11.08	−450.01	0.324	12.55	0.229T_s
		5	20004.30	5.94	−4.47	−28.25	0.118	0.74	0.013T_s
		6	20055.36	75.00	−2.46	−196.30	0.063	5.02	0.091T_s
		Total	19944.95	89.53	−21.85	−1830.21	0.790	55.81	1.016T_s

Notes. The estimations of τ for 4C +27.14 are re-scaled and use the data in Stanimirović et al. (2014).

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