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BUR15 - A `water spout' maser jet in S235AB-MIR

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Short title: Burns et al. (2015)
Authors: Burns, R. A.Imai, H.Handa, T.Omodaka, T.Nakagawa, A.Nagayama, T.Ueno, Y.
Journal: Monthly Notices of the Royal Astronomical Society, Volume 453, Issue 3, p.3163-3173
Bibcode:

Target type: High_mass_SFR

Abstract
We report on annual parallax and proper motion observations of H₂O masers in S235AB-MIR, which is a massive young stellar object in the Perseus Arm. Using multi-epoch VLBI (very long baseline interferometry) astrometry we measured a parallax of Ï� = 0.63 Â� 0.03 mas, corresponding to a trigonometric distance of D= 1.56^{+0.09}_{-0.08} kpc, and source proper motion of (Î¼_Î�cos Î´, Î¼_Î´) = (0.79 Â� 0.12, -2.41 Â� 0.14) mas yr^-1. Water masers trace a jet of diameter 15 au which exhibits a definite radial velocity gradient perpendicular to its axis. 3D maser kinematics were well modelled by a rotating cylinder with physical parameters: v_out = 45 Â� 2 km s^-1, v_rot = 22 Â� 3 km s^-1, i = 12Â� Â� 2Â�, which are the outflow velocity, tangential rotation velocity and line-of-sight inclination, respectively. One maser feature exhibited steady acceleration which may be related to the jet rotation. During our 15-month VLBI programme there were three `maser burst' events caught `in the act' which were caused by the overlapping of masers along the line of sight.

Abstract

We report on annual parallax and proper motion observations of H₂O masers in S235AB-MIR, which is a massive young stellar object in the Perseus Arm. Using multi-epoch VLBI (very long baseline interferometry) astrometry we measured a parallax of Ï� = 0.63 Â� 0.03 mas, corresponding to a trigonometric distance of D= 1.56^{+0.09}_{-0.08} kpc, and source proper motion of (Î¼_Î�cos Î´, Î¼_Î´) = (0.79 Â� 0.12, -2.41 Â� 0.14) mas yr^-1. Water masers trace a jet of diameter 15 au which exhibits a definite radial velocity gradient perpendicular to its axis. 3D maser kinematics were well modelled by a rotating cylinder with physical parameters: v_out = 45 Â� 2 km s^-1, v_rot = 22 Â� 3 km s^-1, i = 12Â� Â� 2Â�, which are the outflow velocity, tangential rotation velocity and line-of-sight inclination, respectively. One maser feature exhibited steady acceleration which may be related to the jet rotation. During our 15-month VLBI programme there were three `maser burst' events caught `in the act' which were caused by the overlapping of masers along the line of sight.

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Detection table from Burns et al. (2015)

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ID	Obs. RA	Obs. Dec	RA offset	Dec offset	l	b	Group id	#	Maser spot	Source name	Image	Descr.	Line	V_peak	μ_X	μ_Y	π	Epoch	Telescope	Detection	Class	Dist. (parallax)	Date
	(J2000)	(J2000)	(mas)	(mas)	(deg.)	(deg.)							H₂O	(km/s)	(mas/yr)	(mas/yr)	(mas)	#		Yes/No		(kpc)
1	+05 40 53.384455	+35 41 48.447			173.7189672	2.6981486	G173.719+2.698			S235AB-MIR	Image	Descr	22 GHz;						VERA	+H₂O +CH₃OH I -CH₃OH II +OH	SFR_MIXED	1.56 (-0.08 +0.09)	2013 Jan - 2014 Apr
	+05 40 53.3839847	+35 41 48.47933	-6.95 mas	32.45 mas	173.718959	2.698152		1	A1	S235AB-MIR				-60.06	0.62 (0.27)	-1.95 (0.22)		3458**
	+05 40 53.3839867	+35 41 48.47935	-6.92 mas	32.47 mas	173.718959	2.698152		2	A2	S235AB-MIR				-60.48				*358
	+05 40 53.3839973	+35 41 48.47976	-6.76 mas	32.88 mas	173.718959	2.698152		3	A3	S235AB-MIR				-60.9	1.30 (0.29)	-2.36 (0.23)		13456** 10
	+05 40 53.384	+35 41 48.47976	-6.72 mas	32.88 mas	173.718959	2.698152		4	A4	S235AB-MIR				-61.32	1.17 (0.18)	-2.42 (0.15)	0.713 (0.092)	123456789 10
	+05 40 53.3840027	+35 41 48.47979	-6.68 mas	32.91 mas	173.718959	2.698152		5	A5	S235AB-MIR				-61.74	1.34 (0.19)	-2.48 (0.15)	0.675 (0.061)	1235678 10
	+05 40 53.384002	+35 41 48.47989	-6.69 mas	33.01 mas	173.718959	2.698152		6	A6	S235AB-MIR				-62.16	1.20 (0.25)	-2.43 (0.20)	0.558 (0.083)	1***56789 10
	+05 40 53.3840047	+35 41 48.47997	-6.65 mas	33.09 mas	173.718959	2.698152		7	A7	S235AB-MIR				-62.58	1.24 (0.22)	-2.43 (0.18)		12*5689 10
	+05 40 53.3840073	+35 41 48.47997	-6.61 mas	33.09 mas	173.718959	2.698152		8	A8	S235AB-MIR				-63	1.08 (0.23)	-2.38 (0.18)		12589 10
	+05 40 53.384012	+35 41 48.4799	-6.54 mas	33.02 mas	173.718959	2.698152		9	A9	S235AB-MIR				-63.42	0.95 (0.23)	-2.37 (0.18)		12589 10
	+05 40 53.3840187	+35 41 48.47985	-6.44 mas	32.97 mas	173.718959	2.698152		10	A10	S235AB-MIR				-63.84	0.60 (0.37)	-2.36 (0.29)		1235**9 10
	+05 40 53.38401	+35 41 48.47969	-6.57 mas	32.81 mas	173.718959	2.698152		11	A11	S235AB-MIR				-64.26				23******
	+05 40 53.3840153	+35 41 48.47958	-6.49 mas	32.7 mas	173.718959	2.698152		12	A12	S235AB-MIR				-64.68				3*****
	+05 40 53.3840187	+35 41 48.47962	-6.44 mas	32.74 mas	173.718959	2.698152		13	A13	S235AB-MIR				-65.1				3*****
	+05 40 53.3840193	+35 41 48.47964	-6.43 mas	32.76 mas	173.718959	2.698152		14	A14	S235AB-MIR				-65.52				3*****
	+05 40 53.384026	+35 41 48.48373	-6.33 mas	36.85 mas	173.718958	2.698153		15	B1	S235AB-MIR				-60.06				*4****
	+05 40 53.38403	+35 41 48.48369	-6.27 mas	36.81 mas	173.718958	2.698153		16	B2	S235AB-MIR				-60.48				**46****
	+05 40 53.3840033	+35 41 48.48406	-6.67 mas	37.18 mas	173.718958	2.698153		17	B3	S235AB-MIR				-60.9	1.26 (0.31)	1.47 (0.24)		*3467***
	+05 40 53.3840107	+35 41 48.48393	-6.56 mas	37.05 mas	173.718958	2.698153		18	B4	S235AB-MIR				-61.32	1.34 (0.26)	1.10 (0.20)		234567**
	+05 40 53.3840127	+35 41 48.48393	-6.53 mas	37.05 mas	173.718958	2.698153		19	B5	S235AB-MIR				-61.74	1.54 (0.26)	1.17 (0.20)		234567**
	+05 40 53.38402	+35 41 48.48416	-6.42 mas	37.28 mas	173.718958	2.698153		20	B6	S235AB-MIR				-62.16	1.43 (0.23)	0.86 (0.18)		123567**
	+05 40 53.3840167	+35 41 48.48402	-6.47 mas	37.14 mas	173.718958	2.698153		21	B7	S235AB-MIR				-62.58	1.45 (0.23)	0.92 (0.18)		123567**
	+05 40 53.384032	+35 41 48.48386	-6.24 mas	36.98 mas	173.718958	2.698153		22	B8	S235AB-MIR				-63	1.52 (0.22)	0.68 (0.18)		235678**
	+05 40 53.384038	+35 41 48.48374	-6.15 mas	36.86 mas	173.718958	2.698153		23	B9	S235AB-MIR				-63.42	1.40 (0.22)	0.83 (0.18)		235678**
	+05 40 53.3840387	+35 41 48.4839	-6.14 mas	37.02 mas	173.718958	2.698153		24	B10	S235AB-MIR				-63.84	1.42 (0.29)	0.63 (0.23)		*35678**
	+05 40 53.3840413	+35 41 48.48387	-6.1 mas	36.99 mas	173.718958	2.698153		25	B11	S235AB-MIR				-64.26	1.43 (0.29)	0.64 (0.23)		*35678**
	+05 40 53.3840407	+35 41 48.48386	-6.11 mas	36.98 mas	173.718958	2.698153		26	B12	S235AB-MIR				-64.68	1.31 (0.35)	0.88 (0.28)		*3567***
	+05 40 53.384034	+35 41 48.48394	-6.21 mas	37.06 mas	173.718958	2.698153		27	B13	S235AB-MIR				-65.1	2.17 (0.35)	0.64 (0.28)		*3567***
	+05 40 53.3842	+35 41 48.48421	-3.72 mas	37.33 mas	173.718958	2.698153		28	B14	S235AB-MIR				-65.52				**567*
	+05 40 53.384182	+35 41 48.48408	-3.99 mas	37.2 mas	173.718958	2.698153		29	B15	S235AB-MIR				-65.94				**567*
	+05 40 53.3841773	+35 41 48.48404	-4.06 mas	37.16 mas	173.718958	2.698153		30	B16	S235AB-MIR				-66.36				***57***
	+05 40 53.3839078	+35 41 48.48059	-8.103 mas	33.71 mas	173.718958	2.698152		31	C1	S235AB-MIR				-59.22				123*******
	+05 40 53.3839105	+35 41 48.48053	-8.063 mas	33.65 mas	173.718958	2.698152		32	C2	S235AB-MIR				-59.64				1*********
	+05 40 53.383919	+35 41 48.480474	-7.935 mas	33.594 mas	173.718958	2.698152		33	C3	S235AB-MIR				-60.06				134**9
	+05 40 53.3839435	+35 41 48.480101	-7.568 mas	33.221 mas	173.718958	2.698152		34	C4	S235AB-MIR				-60.48				*4*9
	+05 40 53.3840299	+35 41 48.480524	-6.271 mas	33.644 mas	173.718959	2.698152		35	C5	S235AB-MIR				-60.9				**59
	+05 40 53.3840343	+35 41 48.480524	-6.206 mas	33.644 mas	173.718959	2.698152		36	C6	S235AB-MIR				-61.32				****56789 10
	+05 40 53.3840286	+35 41 48.480589	-6.291 mas	33.709 mas	173.718958	2.698152		37	C7	S235AB-MIR				-61.74				****56789 10
	+05 40 53.3840269	+35 41 48.480594	-6.316 mas	33.714 mas	173.718958	2.698152		38	C8	S235AB-MIR				-62.16				****56789 10
	+05 40 53.3840439	+35 41 48.480389	-6.061 mas	33.509 mas	173.718959	2.698152		39	C9	S235AB-MIR				-62.58				****56789 10
	+05 40 53.3840148	+35 41 48.480409	-6.498 mas	33.529 mas	173.718959	2.698152		40	C10	S235AB-MIR				-63				******789 10
	+05 40 53.3840151	+35 41 48.480394	-6.493 mas	33.514 mas	173.718959	2.698152		41	C11	S235AB-MIR				-63.42				******789 10
	+05 40 53.3840128	+35 41 48.480389	-6.528 mas	33.509 mas	173.718959	2.698152		42	C12	S235AB-MIR				-63.84				******789 10
	+05 40 53.3840218	+35 41 48.480131	-6.393 mas	33.251 mas	173.718959	2.698152		43	C13	S235AB-MIR				-64.68				*****8
	+05 40 53.3035813	+35 41 50.00988	-1213 mas	1563 mas	173.718453	2.698146		44	D	S235AB-MIR				+ 14.12				12********
	+05 40 53.307448	+35 41 50.04588	-1155 mas	1599 mas	173.718452	2.698162		45	E	S235AB-MIR				+2.73				*********10
	+05 40 53.3087147	+35 41 50.06588	-1136 mas	1619 mas	173.718449	2.698169		46	F	S235AB-MIR				-17.91	0.79 (0.12)	-2.41 (0.14)		*******89 10
	+05 40 53.383902	+35 41 48.48323	-8.19 mas	36.35 mas	173.718958	2.698152		47	G	S235AB-MIR				-61.32	1.47 (0.20)	-1.91 (0.20)		1234******
	+05 40 53.3839687	+35 41 48.48317	-7.19 mas	36.29 mas	173.718958	2.698153		48	H	S235AB-MIR				-60.91	0.84 (0.22)	1.44 (0.30)		***578**
	+05 40 53.384336	+35 41 48.48318	-1.68 mas	36.3 mas	173.718958	2.698154		49	I	S235AB-MIR				-65.94	3.46 (0.20)	-2.02 (0.21)		**567*
	+05 40 53.383824	+35 41 48.4791	-9.36 mas	32.22 mas	173.718958	2.698152		50	J	S235AB-MIR				-55.43	2.60 (0.18)	-6.18 (0.20)		123*******
	+05 40 53.3841027	+35 41 48.47309	-5.18 mas	26.21 mas	173.718960	2.698151		51	K	S235AB-MIR				-56.28	3.77 (0.18)	-5.61 (0.20)		1235****
	+05 40 53.384156	+35 41 48.47213	-4.38 mas	25.25 mas	173.718961	2.698151		52	L	S235AB-MIR				-56.7				*4****
	+05 40 53.3837053	+35 41 48.48391	-11.14 mas	37.03 mas	173.718957	2.698152		53	M	S235AB-MIR				-57.54				*******9
	+05 40 53.384354	+35 41 48.47702	-1.41 mas	30.14 mas	173.718960	2.698153		54	N	S235AB-MIR				-61.32				**5***
	+05 40 53.38424	+35 41 48.47627	-3.12 mas	29.39 mas	173.718960	2.698152		55	O	S235AB-MIR				-63.86				*********10
	+05 40 53.3840687	+35 41 48.48598	-5.69 mas	39.1 mas	173.718957	2.698153		56	P	S235AB-MIR				-64.25				**5***
	+05 40 53.3841107	+35 41 48.48006	-5.06 mas	33.18 mas	173.718959	2.698152		57	Q	S235AB-MIR				-64.7				*******9
	+05 40 53.3843367	+35 41 48.48278	-1.67 mas	35.9 mas	173.718959	2.698154		58	R	S235AB-MIR				-64.7				*********10
	+05 40 53.384304	+35 41 48.48009	-2.16 mas	33.21 mas	173.718959	2.698153		59	S	S235AB-MIR				-64.7				*********10

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 'BUR15' 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 'BUR15' AND detected=true AND hide=false ORDER BY detected DESC,id

Display data from paper

BUR15 - A `water spout' maser jet in S235AB-MIR

Interferometry data

View as list of objects

Detection table from Burns et al. (2015)