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WU99 - Observations and studies of celestial water masers.

Short title: Wu et al. (1999)
Authors: Wu, YuefangShi, JianrongWang, JunzhiJiang, DongrongHuang, Xinyong
Journal: Acta Astrophys. Sinica, Vol. 19, p. 309-317 (1999)
Bibcode:

Target type: High_mass_SFR

Abstract
Using the 25 m telescope of Shanghai Astronomical Observatory, Joint Radio Astronomy Lab., water vapor maser emission at 22.2 GHz was surveyed for 19 known maser sources and 20 candidates of H II regions, 21 sources were detected, of which two are for the first time. Combining with some previous measured data, the time variations in the flux and velocity were obtained and discussed. Time variation in the peak flux density is common and includes two types, changes in the intensity of the same peak and swapping over of different peaks. And the later type also causes shifts in the peak velocity. Corresponding IRAS sources were identified and the relation between maser emission and the infrared parameters discussed. It is shown that the infrared intensity has a greater effect on maser production rate than the infrared color distribution.

Abstract

Using the 25 m telescope of Shanghai Astronomical Observatory, Joint Radio Astronomy Lab., water vapor maser emission at 22.2 GHz was surveyed for 19 known maser sources and 20 candidates of H II regions, 21 sources were detected, of which two are for the first time. Combining with some previous measured data, the time variations in the flux and velocity were obtained and discussed. Time variation in the peak flux density is common and includes two types, changes in the intensity of the same peak and swapping over of different peaks. And the later type also causes shifts in the peak velocity. Corresponding IRAS sources were identified and the relation between maser emission and the infrared parameters discussed. It is shown that the infrared intensity has a greater effect on maser production rate than the infrared color distribution.

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Detection table from Wu et al. (1999)

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ID	Obs. RA	Obs. Dec	l	b	Group id	Source name	Image	Line	V_range	V_peak	F_peak	∫F dv	Telescope	RMS	Beam	Detection	Class	Dist. (parallax)	Date
	(J2000)	(J2000)	(deg.)	(deg.)				H₂O	(km/s)	(km/s)	(Jy)	(Jy*km/s)		(Jy)	(arcsec)	Yes/No		(kpc)
1	00 36 47.5	+63 29 2.1	121.2980	0.6586	G121.298+0.659	00338+6312	Image	22 GHz;	28.7;31	30.4	66.8	17.7	Shang_25m	30.000	138	+H₂O +CH₃OH I +CH₃OH II	SFR_MIXED		1997 08 10
2	02 25 40.5	+62 05 51.2	133.7147	1.2149	G133.715+1.215	W3(2)	Image	22 GHz;	-47;33.4	-40.9	1362	2564.23	Shang_25m	30.000	138	+H₂O -CH₃OH I +CH₃OH II +OH	SFR		1997 08 11
3	02 25 53.6	+62 04 10.6	133.7486	1.1979	G133.749+1.198	W3(3)	Image	22 GHz;	-50.7;-33.1	-40.8	968	1930.8	Shang_25m	30.000	138	+H₂O +CH₃OH I +CH₃OH II	SFR		1997 08 11
4	02 27 4.3	+61 51 27.6	133.9540	1.0498	G133.949+1.064	W3(OH)	Image	22 GHz;	-53.5;-44.3	-49.1	2448.8	4487.7	Shang_25m	30.000	138	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		1997 08 11
5	03 29 3.6	+31 16 4.6	158.3467	-20.5553	G158.347-20.556	HH7 11	Image	22 GHz;	3.2;7.2	5.3	108.8	274.1	Shang_25m	30.000	138	+H₂O -CH₃OH I -CH₃OH II	SFR_MIXED		1997 08 11
6	05 35 14.5	-05 22 20.6	208.9904	-19.3836	G208.993-19.385	Orion-KL	Image	22 GHz;	-5.8;16.1	10.6	15450.1	41219.6	Shang_25m	30.000	138	+H₂O +CH₃OH I +CH₃OH II +OH +SiO	SFR_MIXED		1997 08 11
7	05 35 27.7	-05 09 39.5	208.8171	-19.2388	G208.816-19.239	OMC-2	Image	22 GHz;	16.5;18.6	17.9	69.2	72.7	Shang_25m	30.000	138	+H₂O +CH₃OH I +CH₃OH II	SFR_MIXED		1997 08 11
8	07 22 58.6	-25 46 2.8	239.3529	-5.0645	G239.352-5.065	VY CMa	Image	22 GHz;	3.2;33.5	21.7	823.4	5823	Shang_25m	30.000	138	+H₂O -CH₃OH I -CH₃OH II +OH +SiO	EVOLVED		1997 08 11
9	17 20 18	-35 54 58	351.2398	0.6678	G351.240+0.671	GGD 25	Image	22 GHz;	-85;-72.6	-78	2361.5	7810.2	Shang_25m	30.000	138	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		1997 08 11
10	17 20 53.3	-35 47 19.5	351.4125	0.6427	G351.417+0.645	NGC6334A	Image	22 GHz;	-10.6;1.2	-7.8	661.5	2732.5	Shang_25m	30.000	138	+H₂O +CH₃OH I +CH₃OH II +OH	SFR_MIXED		1997 08 11
11	17 20 56.2	-35 45 13.3	351.4470	0.6545	G351.446+0.660	NGC6334E	Image	22 GHz;	-8.7;4.4	-7.4	114.5	341.1	Shang_25m	30.000	138	+H₂O +CH₃OH I +CH₃OH II	SFR		1997 08 11
12	18 12 54.6	-18 11 08	12.4296	-0.0480	G12.430-0.048	18099-1811	Image	22 GHz;	37.4;37.8	37.7	65.5	15	Shang_25m	30.000	138	+H₂O -CH₃OH I -CH₃OH II	SFR		1997 08 10
13	18 30 34.9	-15 14 37.8	17.0161	-2.3988	G17.017-2.400	L379IRS2	Image	22 GHz;	20.1;28.2	20.4	83.3	143.4	Shang_25m	30.000	138	+H₂O +CH₃OH I +CH₃OH II	SFR_MIXED		1997 08 09
14	18 34 25.5	-07 54 46.9	23.9559	0.1491	G23.955+0.151	18317-0757	Image	22 GHz;	73.9;75.2	75.2	103.9	40.9	Shang_25m	30.000	138	+H₂O +CH₃OH I -CH₃OH II	SFR		1997 08 10
15	18 53 18.8	+01 14 54.7	34.2569	0.1521	G34.257+0.153	W44	Image	22 GHz;	53.9;61	60.6	476.2	824.9	Shang_25m	30.000	138	+H₂O +CH₃OH I +CH₃OH II +OH	SFR_MIXED		1997 08 11
16	19 11 54.3	+09 35 55.4	43.7972	-0.1276	G43.795-0.127	OH43.8-0.1	Image	22 GHz;	34.6;42.8	37.6	2513	2071	Shang_25m	30.000	138	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		1997 08 11
17	19 23 45.2	+14 30 16.5	49.4877	-0.3943	G49.488-0.387	W51M	Image	22 GHz;	52.6;70.2	55.2	1449.6	5400.6	Shang_25m	30.000	138	+H₂O +CH₃OH I +CH₃OH II +OH -SiO	SFR		1997 08 11
18	20 39 01	+42 22 49.9	81.7219	0.5713	G81.711+0.563	W75(OH)	Image	22 GHz;	-5.1;-3.5	-4.1	50	36.9	Shang_25m	30.000	138	+H₂O +CH₃OH I +CH₃OH II +OH -SiO	SFR		1997 08 09
19	22 56 17.9	+62 01 46.3	109.8705	2.1135	G109.871+2.114	Cep A	Image	22 GHz;	-11.2;-7.9	-9.8	822.1	1024.1	Shang_25m	30.000	138	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		1997 08 11
20	23 14 11.1	+61 32 48.1	111.6180	0.8299	G111.618+0.830	23120+6116	Image	22 GHz;	-58.2;54.8	-57.6	111.3	139.2	Shang_25m	30.000	138	+H₂O -CH₃OH II	SFR		1997 08 10
21	23 13 44.7	+61 28 9.7	111.5409	0.7772	G111.542+0.769	NGC 7538	Image	22 GHz;	-73.1;-59.4	-61.1	61.1	242.3	Shang_25m	30.000	138	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		1997 08 11

DSS colored	2MASS colored	WISE colored
SDSS color	IRAC color I1,I2,I4	GLIMPSE 360
PACS color (70-160 um)	SPIRE color (250-500 um)	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 'WU99' 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 'WU99' AND detected=true AND hide=false ORDER BY detected DESC,id

Display data from paper

WU99 - Observations and studies of celestial water masers.

View as list of objects

Detection table from Wu et al. (1999)