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SUR14B - Rapidly increasing collimation and magnetic field changes of a protostellar H₂O maser outflow

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Short title: Surcis et al. (2014B)
Authors: Surcis, G.Vlemmings, W. H. T.van Langevelde, H. J.Goddi, C.Torrelles, J. M.CantÃ³, J.Curiel, S.Kim, S. -W.Kim, J. -S.
Journal: Astronomy & Astrophysics, Volume 565, id.L8, 8 pp.
Bibcode:

Target type: High_mass_SFR

Abstract
Context. W75N(B) is a massive star-forming region that contains three radio continuum sources (VLA 1, VLA 2, and VLA 3), which are thought to be three massive young stellar objects at three different evolutionary stages. VLA 1 is the most evolved and VLA 2 the least evolved source. The 22 GHz H2O masers associated with VLA 1 and VLA 2 have been mapped at several epochs over eight years. While the H2O masers in VLA 1 show a persistent linear distribution along a radio jet, those in VLA 2 are distributed around an expanding shell. Furthermore, H2O maser polarimetric measurements revealed magnetic fields aligned with the two structures. Aims: Using new polarimetric observations of H2O masers, we aim to confirm the elliptical expansion of the shell-like structure around VLA 2 and, at the same time, to determine if the magnetic fields around the two sources have changed. Methods: The NRAO Very Long Baseline Array was used to measure the linear polarization and the Zeeman-splitting of the 22 GHz H2O masers towards the massive star-forming region W75N(B). Results: The H2O maser distribution around VLA 1 is unchanged from that previously observed. We made an elliptical fit of the H2O masers around VLA 2. We find that the shell-like structure is still expanding along the direction parallel to the thermal radio jet of VLA 1. While the magnetic field around VLA 1 has not changed in the past ~7 years, the magnetic field around VLA 2 has changed its orientation according to the new direction of the major-axis of the shell-like structure and it is now aligned with the magnetic field in VLA 1. Appendix A is available in electronic form at http://www.aanda.org

Abstract

Context. W75N(B) is a massive star-forming region that contains three radio continuum sources (VLA 1, VLA 2, and VLA 3), which are thought to be three massive young stellar objects at three different evolutionary stages. VLA 1 is the most evolved and VLA 2 the least evolved source. The 22 GHz H2O masers associated with VLA 1 and VLA 2 have been mapped at several epochs over eight years. While the H2O masers in VLA 1 show a persistent linear distribution along a radio jet, those in VLA 2 are distributed around an expanding shell. Furthermore, H2O maser polarimetric measurements revealed magnetic fields aligned with the two structures. Aims: Using new polarimetric observations of H2O masers, we aim to confirm the elliptical expansion of the shell-like structure around VLA 2 and, at the same time, to determine if the magnetic fields around the two sources have changed. Methods: The NRAO Very Long Baseline Array was used to measure the linear polarization and the Zeeman-splitting of the 22 GHz H2O masers towards the massive star-forming region W75N(B). Results: The H2O maser distribution around VLA 1 is unchanged from that previously observed. We made an elliptical fit of the H2O masers around VLA 2. We find that the shell-like structure is still expanding along the direction parallel to the thermal radio jet of VLA 1. While the magnetic field around VLA 1 has not changed in the past ~7 years, the magnetic field around VLA 2 has changed its orientation according to the new direction of the major-axis of the shell-like structure and it is now aligned with the magnetic field in VLA 1. Appendix A is available in electronic form at

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Detection table from Surcis et al. (2014B)

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ID	Obs. RA	Obs. Dec	RA offset	Dec offset	l	b	Group id	#	Source name	Image	Descr.	Line	V_peak	F_peak	Telescope	V_step	RMS	Beam	PA	Detection	Class	Dist. (parallax)	Date
	(J2000)	(J2000)	(mas)	(mas)	(deg.)	(deg.)						H₂O	(km/s)	(Jy/beam)		(km/s)	(mJy/beam)	(arcsec)	(deg.)	Yes/No		(kpc)
1	+20 38 36.438	+42 37 34.84			81.871292	0.78062	G81.871+0.781		W75N(B)	Image	Descr	22 GHz;	-11.193 .. 22.039	0.19 .. 94.32	VLBA	0.03	21.000	0.00087 x 0.00061	3.75	+H₂O +OH	SFR_MIXED		2012 Jun 24
	+20 38 36.4312	+42 37 34.6503	-101.297 mas	-188.122 mas	81.871237	0.780604		1	W75N(B)				12.386	1.64 (0.16)
	+20 38 36.4314	+42 37 34.6465	-99.15 mas	-191.898 mas	81.871237	0.780604		2	W75N(B)				12.305	1.38 (0.17)
	+20 38 36.4338	+42 37 34.6198	-62.311 mas	-218.605 mas	81.871235	0.780593		3	W75N(B)				12.305	2.85 (0.12)
	+20 38 36.4346	+42 37 34.6614	-50.775 mas	-176.99 mas	81.871246	0.780598		4	W75N(B)				11.861	0.69 (0.04)
	+20 38 36.4372	+42 37 34.7986	-11.662 mas	-39.768 mas	81.871281	0.780615		5	W75N(B)				11.928	9.80 (0.04)
	+20 38 36.438	+42 37 34.8384	0 mas	0 mas	81.871291	0.780620		6	W75N(B)				10.593	94.32 (0.11)
	+20 38 36.4392	+42 37 34.7722	18.02 mas	-66.166 mas	81.871279	0.780606		7	W75N(B)				9.501	2.19 (0.06)
	+20 38 36.4393	+42 37 34.7723	19.114 mas	-66.052 mas	81.871279	0.780606		8	W75N(B)				9.811	1.27 (0.03)
	+20 38 36.4393	+42 37 34.7736	19.493 mas	-64.823 mas	81.871280	0.780606		9	W75N(B)				9.811	0.83 (0.03)
	+20 38 36.4396	+42 37 34.8572	23.998 mas	18.848 mas	81.871299	0.780619		10	W75N(B)				10.957	4.82 (0.06)
	+20 38 36.4396	+42 37 34.8563	24.335 mas	17.906 mas	81.871298	0.780619		11	W75N(B)				11.82	1.68 (0.05)
	+20 38 36.44	+42 37 34.8573	30.313 mas	18.917 mas	81.871299	0.780618		12	W75N(B)				11.159	2.33 (0.06)
	+20 38 36.4401	+42 37 34.7773	31.787 mas	-61.127 mas	81.871282	0.780604		13	W75N(B)				12.872	2.50 (0.06)
	+20 38 36.4401	+42 37 34.7772	32.04 mas	-61.161 mas	81.871282	0.780604		14	W75N(B)				13.977	1.01 (0.04)
	+20 38 36.4401	+42 37 34.8582	32.166 mas	19.795 mas	81.871300	0.780618		15	W75N(B)				10.93	1.28 (0.06)
	+20 38 36.4404	+42 37 34.8497	36.587 mas	11.28 mas	81.871298	0.780616		16	W75N(B)				14.611	0.90 (0.07)
	+20 38 36.4404	+42 37 34.7046	36.671 mas	-133.79 mas	81.871266	0.780591		17	W75N(B)				9.784	1.10 (0.03)
	+20 38 36.4409	+42 37 34.8608	42.776 mas	22.419 mas	81.871302	0.780617		18	W75N(B)				11.267	1.07 (0.06)
	+20 38 36.4409	+42 37 34.8612	43.449 mas	22.812 mas	81.871302	0.780617		19	W75N(B)				11.362	1.08 (0.05)
	+20 38 36.4418	+42 37 34.8744	57.385 mas	35.961 mas	81.871306	0.780617		20	W75N(B)				8.652	3.95 (0.03)
	+20 38 36.4422	+42 37 34.8751	62.311 mas	36.697 mas	81.871307	0.780616		21	W75N(B)				11.389	0.81 (0.05)
	+20 38 36.4422	+42 37 34.8786	63.406 mas	40.18 mas	81.871308	0.780616		22	W75N(B)				9.933	4.27 (0.03)
	+20 38 36.4433	+42 37 34.8865	79.615 mas	48.13 mas	81.871312	0.780615		23	W75N(B)				12.845	16.48 (0.06)
	+20 38 36.4434	+42 37 34.8882	80.836 mas	49.847 mas	81.871312	0.780615		24	W75N(B)				12.764	10.09 (0.07)
	+20 38 36.4434	+42 37 34.884	81.131 mas	45.647 mas	81.871312	0.780614		25	W75N(B)				11.267	1.52 (0.05)
	+20 38 36.4434	+42 37 34.8878	81.299 mas	49.385 mas	81.871312	0.780615		26	W75N(B)				13.64	7.80 (0.04)
	+20 38 36.4435	+42 37 34.8879	82.141 mas	49.545 mas	81.871313	0.780615		27	W75N(B)				15.703	1.93 (0.12)
	+20 38 36.4435	+42 37 34.8854	82.52 mas	46.993 mas	81.871312	0.780614		28	W75N(B)				11.348	1.22 (0.05)
	+20 38 36.4435	+42 37 34.885	82.562 mas	46.635 mas	81.871312	0.780614		29	W75N(B)				15.298	1.65 (0.22)
	+20 38 36.4435	+42 37 34.8858	83.194 mas	47.424 mas	81.871312	0.780614		30	W75N(B)				10.148	0.45 (0.04)
	+20 38 36.4439	+42 37 34.858	88.246 mas	19.569 mas	81.871307	0.780609		31	W75N(B)				9.407	4.00 (0.09)
	+20 38 36.444	+42 37 34.8573	89.383 mas	18.864 mas	81.871307	0.780608		32	W75N(B)				11.038	4.61 (0.05)
	+20 38 36.444	+42 37 34.8575	89.719 mas	19.123 mas	81.871307	0.780608		33	W75N(B)				12.494	3.97 (0.13)
	+20 38 36.444	+42 37 34.8596	89.762 mas	21.153 mas	81.871307	0.780609		34	W75N(B)				12.09	1.72 (0.08)
	+20 38 36.444	+42 37 34.8583	89.804 mas	19.898 mas	81.871307	0.780609		35	W75N(B)				13.317	4.58 (0.04)
	+20 38 36.444	+42 37 34.8577	90.14 mas	19.264 mas	81.871307	0.780608		36	W75N(B)				10.391	2.24 (0.09)
	+20 38 36.4441	+42 37 34.8553	91.109 mas	16.884 mas	81.871306	0.780608		37	W75N(B)				14.018	1.67 (0.05)
	+20 38 36.4443	+42 37 34.8468	94.098 mas	8.427 mas	81.871305	0.780606		38	W75N(B)				11.537	0.61 (0.05))
	+20 38 36.4696	+42 37 34.1114	473.816 mas	-727.013 mas	81.871190	0.780420		39	W75N(B)				16.309	1.24 (0.05)
	+20 38 36.4697	+42 37 34.1079	474.784 mas	-730.545 mas	81.871189	0.780419		40	W75N(B)				16.512	0.48 (0.03)
	+20 38 36.4701	+42 37 34.1266	481.352 mas	-711.754 mas	81.871194	0.780422		41	W75N(B)				16.498	1.20 (0.03)
	+20 38 36.4704	+42 37 34.1282	485.984 mas	-710.171 mas	81.871195	0.780421		42	W75N(B)				20.044	0.22 (0.02)
	+20 38 36.4705	+42 37 34.0273	487.962 mas	-811.104 mas	81.871173	0.780404		43	W75N(B)				14.233	6.62 (0.04)
	+20 38 36.4708	+42 37 34.0253	491.709 mas	-813.095 mas	81.871173	0.780403		44	W75N(B)				13.384	0.57 (0.04)
	+20 38 36.4712	+42 37 34.0765	498.53 mas	-761.936 mas	81.871185	0.780410		45	W75N(B)				11.982	0.35 (0.03)
	+20 38 36.4726	+42 37 34.1008	519.37 mas	-737.568 mas	81.871193	0.780411		46	W75N(B)				6.67	0.97 (0.02)
	+20 38 36.4726	+42 37 34.1308	519.539 mas	-707.607 mas	81.871200	0.780416		47	W75N(B)				18.898	0.69 (0.02)
	+20 38 36.4726	+42 37 34.1295	519.749 mas	-708.904 mas	81.871199	0.780416		48	W75N(B)				18.588	3.24 (0.02)
	+20 38 36.4732	+42 37 34.1775	528.507 mas	-660.904 mas	81.871211	0.780422		49	W75N(B)				2.369	0.21 (0.02)
	+20 38 36.4733	+42 37 34.1789	529.643 mas	-659.538 mas	81.871212	0.780423		50	W75N(B)				2.504	0.22 (0.02)
	+20 38 36.4754	+42 37 34.0435	560.883 mas	-794.949 mas	81.871186	0.780395		51	W75N(B)				11.645	6.01 (0.03)
	+20 38 36.4762	+42 37 34.2471	572.629 mas	-591.267 mas	81.871232	0.780427		52	W75N(B)				3.798	0.84 (0.02)
	+20 38 36.4763	+42 37 34.2469	574.061 mas	-591.526 mas	81.871232	0.780427		53	W75N(B)				4.648	1.03 (0.02)
	+20 38 36.4763	+42 37 34.0367	574.945 mas	-801.651 mas	81.871186	0.780391		54	W75N(B)				15.11	3.76 (0.18)
	+20 38 36.4764	+42 37 34.0377	575.871 mas	-800.69 mas	81.871186	0.780391		55	W75N(B)				15.42	3.02 (0.12)
	+20 38 36.4764	+42 37 34.0377	576.25 mas	-800.716 mas	81.871186	0.780391		56	W75N(B)				14.988	2.16 (0.15)
	+20 38 36.4766	+42 37 34.0389	578.397 mas	-799.526 mas	81.871187	0.780391		57	W75N(B)				14.409	8.05 (0.05)
	+20 38 36.4766	+42 37 34.2438	578.945 mas	-594.635 mas	81.871232	0.780425		58	W75N(B)				6.158	0.32 (0.03)
	+20 38 36.4767	+42 37 34.0422	579.829 mas	-796.158 mas	81.871188	0.780391		59	W75N(B)				17.334	0.27 (0.03)
	+20 38 36.4767	+42 37 34.2435	580.039 mas	-594.902 mas	81.871232	0.780425		60	W75N(B)				6.104	0.29 (0.03)
	+20 38 36.4768	+42 37 34.2277	582.313 mas	-610.703 mas	81.871229	0.780422		61	W75N(B)				7.776	0.60 (0.02)
	+20 38 36.4769	+42 37 34.2359	583.197 mas	-602.474 mas	81.871231	0.780423		62	W75N(B)				4.648	1.14 (0.02)
	+20 38 36.477	+42 37 34.0448	585.555 mas	-793.598 mas	81.871189	0.780391		63	W75N(B)				14.867	2.79 (0.13)
	+20 38 36.4771	+42 37 34.0452	586.481 mas	-793.186 mas	81.871189	0.780391		64	W75N(B)				13.613	1.75 (0.03)
	+20 38 36.4773	+42 37 34.045	588.755 mas	-793.449 mas	81.871189	0.780390		65	W75N(B)				15.298	6.04 (0.15)
	+20 38 36.4777	+42 37 34.2388	594.817 mas	-599.632 mas	81.871233	0.780422		66	W75N(B)				7.371	1.52 (0.02)
	+20 38 36.4782	+42 37 34.0993	602.522 mas	-739.132 mas	81.871203	0.780397		67	W75N(B)				22.039	0.26 (0.02)
	+20 38 36.4783	+42 37 34.0984	604.205 mas	-740.036 mas	81.871203	0.780397		68	W75N(B)				20.758	2.84 (0.02)
	+20 38 36.4784	+42 37 34.0976	606.016 mas	-740.799 mas	81.871203	0.780396		69	W75N(B)				18.696	0.44 (0.02)
	+20 38 36.4785	+42 37 34.0966	607.153 mas	-741.844 mas	81.871203	0.780396		70	W75N(B)				19.316	0.71 (0.02)
	+20 38 36.4785	+42 37 34.0956	608.079 mas	-742.798 mas	81.871203	0.780396		71	W75N(B)				19.248	0.73 (0.02)
	+20 38 36.4786	+42 37 34.0948	608.416 mas	-743.553 mas	81.871203	0.780396		72	W75N(B)				19.976	0.91 (0.02)
	+20 38 36.4787	+42 37 34.0937	610.732 mas	-744.667 mas	81.871203	0.780395		73	W75N(B)				18.494	3.19 (0.02)
	+20 38 36.4789	+42 37 34.0937	613.847 mas	-744.747 mas	81.871203	0.780394		74	W75N(B)				10.984	0.48 (0.05)
	+20 38 36.479	+42 37 34.0677	614.605 mas	-770.691 mas	81.871198	0.780390		75	W75N(B)				13.249	0.64 (0.04)
	+20 38 36.479	+42 37 34.0655	614.647 mas	-772.896 mas	81.871197	0.780390		76	W75N(B)				13.573	0.35 (0.03)
	+20 38 36.479	+42 37 34.07	614.774 mas	-768.429 mas	81.871198	0.780390		77	W75N(B)				12.535	0.34 (0.04)
	+20 38 36.4815	+42 37 34.0906	652.539 mas	-747.784 mas	81.871207	0.780388		78	W75N(B)				-2.191	0.24 (0.02)
	+20 38 36.4816	+42 37 34.2659	653.465 mas	-572.544 mas	81.871246	0.780417		79	W75N(B)				7.506	0.29 (0.02)
	+20 38 36.4819	+42 37 34.2522	659.149 mas	-586.201 mas	81.871244	0.780414		80	W75N(B)				-10.155	0.44 (0.02)
	+20 38 36.4837	+42 37 34.1721	685.042 mas	-666.283 mas	81.871229	0.780396		81	W75N(B)				2.329	1.08 (0.02)
	+20 38 36.4837	+42 37 34.2369	685.084 mas	-601.471 mas	81.871244	0.780407		82	W75N(B)				14.934	6.08 (0.14)
	+20 38 36.4838	+42 37 34.2334	686.305 mas	-605.049 mas	81.871243	0.780406		83	W75N(B)				15.325	8.87 (0.14)
	+20 38 36.4838	+42 37 34.1829	687.61 mas	-655.483 mas	81.871232	0.780398		84	W75N(B)				-6.636	4.26 (0.02)
	+20 38 36.4839	+42 37 34.2319	687.947 mas	-606.522 mas	81.871243	0.780406		85	W75N(B)				15.285	13.84 (0.15)
	+20 38 36.4839	+42 37 34.2291	688.157 mas	-609.31 mas	81.871242	0.780405		86	W75N(B)				16.094	12.97 (0.07)
	+20 38 36.4839	+42 37 34.1656	688.199 mas	-672.81 mas	81.871228	0.780395		87	W75N(B)				1.776	0.27 (0.02)
	+20 38 36.4839	+42 37 34.1909	688.831 mas	-647.507 mas	81.871234	0.780399		88	W75N(B)				-3.158	0.38 (0.02)
	+20 38 36.4841	+42 37 34.2186	692.115 mas	-619.831 mas	81.871241	0.780403		89	W75N(B)				12.777	4.77 (0.04)
	+20 38 36.4846	+42 37 34.2018	699.188 mas	-636.635 mas	81.871238	0.780399		90	W75N(B)				15.002	14.07 (0.17)
	+20 38 36.4846	+42 37 34.1786	699.609 mas	-659.79 mas	81.871233	0.780395		91	W75N(B)				17.213	9.75 (0.03)
	+20 38 36.4848	+42 37 34.1825	702.514 mas	-655.918 mas	81.871234	0.780395		92	W75N(B)				16.256	0.65 (0.04)
	+20 38 36.4849	+42 37 34.1811	702.809 mas	-657.299 mas	81.871234	0.780395		93	W75N(B)				16.269	1.11 (0.05)
	+20 38 36.4849	+42 37 34.2019	703.398 mas	-636.49 mas	81.871238	0.780398		94	W75N(B)				14.584	1.16 (0.06)
	+20 38 36.4849	+42 37 34.1796	703.483 mas	-658.81 mas	81.871233	0.780394		95	W75N(B)				15.851	9.30 (0.07)
	+20 38 36.4854	+42 37 34.1701	710.514 mas	-668.293 mas	81.871232	0.780392		96	W75N(B)				-6.219	0.26 (0.02)
	+20 38 36.4854	+42 37 33.9117	710.556 mas	-926.731 mas	81.871175	0.780348		97	W75N(B)				8.179	4.29 (0.03)
	+20 38 36.4855	+42 37 34.1773	711.987 mas	-661.125 mas	81.871234	0.780393		98	W75N(B)				6.764	3.56 (0.02)
	+20 38 36.4855	+42 37 34.178	712.282 mas	-660.404 mas	81.871234	0.780393		99	W75N(B)				8.18	1.14 (0.02)
	+20 38 36.4855	+42 37 34.1796	712.282 mas	-658.833 mas	81.871234	0.780393		100	W75N(B)				10.243	0.88 (0.06)
	+20 38 36.4855	+42 37 34.1765	712.45 mas	-661.923 mas	81.871234	0.780392		101	W75N(B)				5.929	10.81 (0.03)
	+20 38 36.4856	+42 37 33.9131	714.597 mas	-925.274 mas	81.871176	0.780348		102	W75N(B)				9.232	26.25 (0.04)
	+20 38 36.4857	+42 37 34.1674	716.071 mas	-671.002 mas	81.871232	0.780390		103	W75N(B)				-7.449	0.19 (0.02)
	+20 38 36.4859	+42 37 34.1677	719.018 mas	-670.666 mas	81.871233	0.780390		104	W75N(B)				5.308	0.26 (0.02)
	+20 38 36.4874	+42 37 34.1311	740.785 mas	-707.31 mas	81.871227	0.780380		105	W75N(B)				-11.193	0.90 (0.02)
	+20 38 36.4875	+42 37 34.13	742.258 mas	-708.374 mas	81.871227	0.780380		106	W75N(B)				-11.166	0.24 (0.02)

DSS colored	2MASS colored	WISE colored
PACS color (70-160 um)	SPIRE color (250-500 um)	GLIMPSE 360
SDSS color	IRAC color I1,I2,I4	NVSS (1.4GHz)
ATLASGAL 870 um	ATLASGAL 870 um + Planck	Bolocam 1.1 mm
UKIDSS K Download UKIDSS K FITS	2MASS K Download 2MASS K FITS

select MAX(h2o_data_all.ra_hms) as ra_hms,MAX(h2o_data_all.dec_dms) as dec_dms,MAX(h2o_data_all.source_name) as source_name,MAX(h2o_data_all.ra) as ra,MAX(h2o_data_all.dec) as dec,MAX(h2o_data_all.l) as l,MAX(h2o_data_all.b) as b,MAX(h2o_data_all.grp) as grp,MAX(h2o_data_all.other_name) as other_name,MAX(h2o_data_all.other_desc) as other_desc,BOOL_OR(thermal) as thermal,MAX(h2o_data_all.line) as line,MAX(h2o_data_all.vrange) as vrange,MAX(h2o_data_all.vpeak) as vpeak,MAX(h2o_data_all.peak) as peak,MAX(h2o_data_all.fwhm) as fwhm,MAX(h2o_data_all.int) as int,MAX(h2o_data_all.rms) as rms,MAX(h2o_data_all.units) as units,MAX(h2o_data_all.units_rms) as units_rms,MAX(h2o_data_all.date_txt) as date_txt,MAX(h2o_data_all.telescope_ref) as telescope_ref,MAX(h2o_data_all.telescope_conf) as telescope_conf,MAX(h2o_data_all.v_step) as v_step,MAX(h2o_data_all.beam) as beam,MAX(h2o_data_all.beam_maj) as beam_maj,MAX(h2o_data_all.beam_min) as beam_min,MAX(h2o_data_all.beam_pa) as beam_pa,MAX(h2o_data_all.ref) as ref,MAX(h2o_data_all.list_ref) as list_ref,MAX(h2o_data_all.ascii) as ascii,MAX(h2o_data_all.url) as url,MAX(h2o_data_all.image) as image,MAX(h2o_data_all.image2) as image2,MAX(h2o_data_all.image3) as image3,MAX(h2o_data_all.descr) as descr,MAX(h2o_data_all.id) as id,BOOL_OR(mjy_flag) as mjy_flag,BOOL_OR(rms_mjy_flag) as rms_mjy_flag,MAX(h2o_data_all.dist) as dist,1 as dist_parallax,MAX(h2o_data_all.date_txt) as date_txt,MAX(line_det) as line_det,MAX(type) as type,MAX(simbad_types_cat) as simbad_types_cat FROM h2o_data_all  LEFT JOIN all_objects_withmet ON h2o_data_all.grp=all_objects_withmet.group_name LEFT JOIN object_categories ON all_objects_withmet.group_name = object_categories.group_name_cat AND object_categories.tbl_cat = 'all_objects_withmet' LEFT JOIN transitions ON h2o_data_all.line=transitions."Line"  WHERE ref ilike 'SUR14B' AND detected=true AND hide=false GROUP BY ref

select h2o_data_all.ra_hms,h2o_data_all.dec_dms,h2o_data_all.source_name,h2o_data_all.ra,h2o_data_all.dec,h2o_data_all.l,h2o_data_all.b,h2o_data_all.grp,h2o_data_all.other_name,h2o_data_all.other_desc,h2o_data_all.thermal,h2o_data_all.line,h2o_data_all.vrange,h2o_data_all.vpeak,h2o_data_all.peak,h2o_data_all.fwhm,h2o_data_all.int,h2o_data_all.rms,h2o_data_all.units,h2o_data_all.units_rms,h2o_data_all.date_txt,h2o_data_all.telescope_ref,h2o_data_all.telescope_conf,h2o_data_all.v_step,h2o_data_all.beam,h2o_data_all.beam_maj,h2o_data_all.beam_min,h2o_data_all.beam_pa,h2o_data_all.ref,h2o_data_all.list_ref,h2o_data_all.ascii,h2o_data_all.url,h2o_data_all.image,h2o_data_all.image2,h2o_data_all.image3,h2o_data_all.descr,h2o_data_all.id,h2o_data_all.mjy_flag,h2o_data_all.rms_mjy_flag,h2o_data_all.dist,h2o_data_all.dist_parallax,h2o_data_all.date_txt,line_det,type,simbad_types_cat FROM h2o_data_all   LEFT JOIN all_objects_withmet ON h2o_data_all.grp=all_objects_withmet.group_name LEFT JOIN object_categories ON all_objects_withmet.group_name = object_categories.group_name_cat AND object_categories.tbl_cat = 'all_objects_withmet' LEFT JOIN transitions ON h2o_data_all.line=transitions."Line"  WHERE ref ilike 'SUR14B' AND detected=true AND hide=false ORDER BY detected DESC,id

Display data from paper

SUR14B - Rapidly increasing collimation and magnetic field changes of a protostellar H2O maser outflow

Interferometry data

View as list of objects

Detection table from Surcis et al. (2014B)

SUR14B - Rapidly increasing collimation and magnetic field changes of a protostellar H₂O maser outflow