A search for the favored hyperfine transition of a 6.7 GHz methanol maser line

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Volume 701 (September 2025)

A&A, 701 (2025) A101

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Table A.2

Parameters of the 6.035 GHz ex-OH maser features detected in G69.540-0.976 (ON 1).

(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)	(10)
Maser	RA^a	Dec^a	Peak	V_LSR	$P_{V}^{b}$ $P_{\mathrm{V}}{}^{b}$	Δ V_Z	B_∥	P₁	χ
	offset	offset	Intensity (I)
	(mas)	(mas)	(Jy beam ⁻¹)	(kms⁻¹)	(%)	kms⁻¹)	mG	(%)	(°)
G69.E01	−475.283	577.944	0.410 ± 0.0158	12.43	97	−0.22	−3.98	–	–
G69.E02	−467.692	568.098	0.587 ± 0.0221	13.98	23	–	–	–	–
G69.E03	−448.081	569.435	2.040 ± 0.0299	13.78	100	–	–	4.5 ± 0.8	−45 ± 2
G69.E04	135.659	−32.789	0.223 ± 0.0169	15.43	100	–	–	–	–
G69.E05	148.362	−32.934	0.912 ± 0.0293	14.71	100	–	–	–	–
G69.E06	154.601	−30.643	0.913 ± 0.021	15.19	90	−0.25	−4.52	–	–
G69.E07	168.114	−31.119	1.948 ± 0.0462	14.37	95	−0.34	−6.11	–	–
G69.E08	177.794	−30.877	0.340 ± 0.0199	14.03	100	−0.29	−5.12	–	–
G69.E09	182.286	−46.535	0.223 ± 0.0175	15.09	100	–	–	–	–
G69.E10	202.310	−44.848	0.875 ± 0.0197	14.85	97	−0.26	−4.65	–	–
G69.E11	316.602	884.971	0.371 ± 0.0152	0.74	27	–	–	–	–
G69.E12	336.457	886.498	2.490 ± 0.0139	0.06	35	–	–	8.6 ± 4.1	+87 ± 47
G69.E13	339.055	887.444	0.254 ± 0.0167	1.08	–	–	–	–	–
G69.E14	346.758	881.284	0.202 ± 0.0177	1.66	98	–	–	–	–
G69.E15	354.176	888.587	3.462 ± 0.0438	−0.43	97	−0.52	−9.31	3.7 ± 0.9	−75 ± 26
G69.E16	354.379	877.810	0.465 ± 0.0172	−1.45	100	−0.71	−12.67	–	–
G69.E17	359.054	889.443	0.739 ± 0.0171	0.49	84	–	–	–	–
G69.E18	382.130	931.563	0.471 ± 0.0176	1.61	13	–	–	–	–
G69.E19	389.840	902.838	0.419 ± 0.017	1.46	100	−0.40	−7.15	–	–
G69.E20	390.640	935.887	0.279 ± 0.0149	2.24	79	–	–	–	–
G69.E21	401.609	933.040	0.933 ± 0.0178	1.32	77	−0.33	−5.98	–	–
G69.E22	404.653	−132.930	7.548 ± 0.105	14.56	98	−0.36	−6.37	6.2 ± 1.4	−85 ± 18
G69.E23	441.565	401.135	1.593 ± 0.0304	13.67	82	−0.08	−1.49	–	–
G69.E24	557.808	−132.329	2.908 ± 0.0848	14.46	80	−0.08	−1.35	16.0 ± 5.1	−42 ± 3

Notes. ^aThe reference position is RA(J2000)=20^h 10^m 09^s.04272 ± 0^s.00007 and Dec(J2000)=+31° 31^′ 34^′′.9736 ± 0^′.0009. ^bThe values reported in italics indicate that only one σ component has been detected and therefore no ΔV_Z can be measured.

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