Display data from paper

Select data type:

OGB20 - MAGMO: polarimetry of 1720-MHz OH masers towards southern star-forming regions

Short title: Ogbodo et al. (2020)
Authors: Ogbodo, C. S.Green, J. A.Dawson, J. R.Breen, S. L.Mao, S. A.McClure-Griffiths, N. M.Robishaw, T.Harvey-Smith, L.
Journal: Monthly Notices of the Royal Astronomical Society, Volume 493, Issue 1, p.199-233
Bibcode:
PDF:

Target type: High_mass_SFR
Observations category: polarization
Facility type: interferometer
Transitions: OH_1720

Abstract
From targeted observations of ground-state hydroxyl (OH) masers towards 702 Methanol Multibeam survey 6.7-GHz methanol masers, in the Galactic longitude range from 186� through the Galactic Centre to 20�, made as part of the `MAGMO' (Mapping the Galactic Magnetic field through OH masers) project, we present the physical and polarization properties of the 1720-MHz OH maser transition, including the identification of Zeeman pairs. We present 10 new and 23 previously catalogued 1720-MHz OH maser sources detected towards star-forming regions (SFRs). In addition, we also detected 16 1720-MHz OH masers associated with supernova remnants and two sites of diffuse OH emission. Towards the 33 star formation masers, we identify 44 Zeeman pairs, implying magnetic field strengths ranging from -11.4 to +13.2 mG, and a median magnetic field strength of B_LOS âˆ¼ 6 mG. With limited statistics, we present the in situ magnetic field orientation of the masers and the Galactic magnetic field distribution revealed by the 1720-MHz transition. We also examine the association statistics of 1720-MHz OH SFR masers with other ground-state OH masers, excited-state OH masers, class I and class II methanol masers, and water masers, and compare maser positions with mid-infrared images of the parent SFRs. Of the 33 1720-MHz star formation masers, 10 are offset from their central exciting sources, and appear to be associated with outflow activity.

Abstract

From targeted observations of ground-state hydroxyl (OH) masers towards 702 Methanol Multibeam survey 6.7-GHz methanol masers, in the Galactic longitude range from 186� through the Galactic Centre to 20�, made as part of the `MAGMO' (Mapping the Galactic Magnetic field through OH masers) project, we present the physical and polarization properties of the 1720-MHz OH maser transition, including the identification of Zeeman pairs. We present 10 new and 23 previously catalogued 1720-MHz OH maser sources detected towards star-forming regions (SFRs). In addition, we also detected 16 1720-MHz OH masers associated with supernova remnants and two sites of diffuse OH emission. Towards the 33 star formation masers, we identify 44 Zeeman pairs, implying magnetic field strengths ranging from -11.4 to +13.2 mG, and a median magnetic field strength of B_LOS âˆ¼ 6 mG. With limited statistics, we present the in situ magnetic field orientation of the masers and the Galactic magnetic field distribution revealed by the 1720-MHz transition. We also examine the association statistics of 1720-MHz OH SFR masers with other ground-state OH masers, excited-state OH masers, class I and class II methanol masers, and water masers, and compare maser positions with mid-infrared images of the parent SFRs. Of the 33 1720-MHz star formation masers, 10 are offset from their central exciting sources, and appear to be associated with outflow activity.

Download as: Table (CSV)
View as list of objects

Detection table from Ogbodo et al. (2020)

Export table to csv

Hide / Show individual components

ID	Obs. RA	Obs. Dec	l	b	Group id	Source name	Image	Descr.	Line	Frequency	V_range	V_peak	F_peak	Telescope	Configuration	RMS	Beam	Detection	Class	Distance	Dist. (parallax)	Date
	(J2000)	(J2000)	(deg.)	(deg.)					OH	(MHz)	(km/s)	(km/s)	(Jy)			(mJy)	(arcsec)	Yes/No		(kpc)	(kpc)
1	06 08 46.7	+21 31 44	189.0322	0.8090	G189.032+0.784	189.032+0.809	Image	Descr	1720 MHz;	1720	3.0;4.0	3.5	1.34	ATCA	6B	40.000	7	+H₂O +CH₃OH I +CH₃OH II +OH	SFR	2.000		2012 January
2	06 08 35.2	+20 39 14.2	189.7757	0.3456	G189.776+0.343	189.776+0.346	Image	Descr	1720 MHz;	1720	10.5;14.0	12.4	1.47	ATCA	6B	40.000	7	+H₂O -CH₃OH I +CH₃OH II +OH	SFR	2.000		2012 January
3	13 21 23	-63 00 29.5	306.3221	-0.3337	G306.322-0.334	306.322-0.334	Image	Descr	1720 MHz;	1720	-20.5;-24.5	-23.4	2.04	ATCA	6B	40.000	7	+H₂O +CH₃OH II +OH	SFR_MIXED	1.500		2011 September
4	15 29 19.3	-56 31 22	323.4590	-0.0787	G323.459-0.079	323.459-0.079	Image	Descr	1720 MHz;	1720	-68;-69	-68.3	1.78	ATCA	6B	40.000	7	-H₂O +CH₃OH II +OH	SFR	3.800		2012 January
5	15 52 42.6	-53 09 52.5	328.1644	0.5865	G328.164+0.587	328.165+0.586	Image	Descr	1720 MHz;	1720	-85.5;-89	-87.9	0.45	ATCA	6B	40.000	7	+CH₃OH I +CH₃OH II +OH	SFR	5.500		2012 January
6	15 55 48.5	-52 43 6.2	328.8085	0.6330	G328.809+0.633	328.808+0.633	Image	Descr	1720 MHz;	1720	-42.5;-43.7	-43.2	29.19	ATCA	6B	40.000	7	+H₂O +CH₃OH I +CH₃OH II +OH	SFR	2.600		2011 December
7	16 00 33.1	-52 44 39.8	329.3389	0.1482	G329.339+0.148	329.339+0.148	Image	Descr	1720 MHz;	1720	-106.3;-108	-106.9	1.32	ATCA	6B	40.000	7	-H₂O -CH₃OH I +CH₃OH II +OH	SFR	7.300		2011 December
8	16 09 52	-51 54 52	330.9531	-0.1805	G330.953-0.182	330.953-0.180	Image	Descr	1720 MHz;	1720	-85;-86.8	-86.2	0.75	ATCA	6B	40.000	7	+H₂O +CH₃OH I +CH₃OH II +OH	SFR	4.700		2012 January
9	16 35 55.2	-47 38 45.8	336.9409	-0.1563	G336.941-0.156	336.941-0.156	Image	Descr	1720 MHz;	1720	-68;-70	-69.4	1.71	ATCA	6B	40.000	7	-H₂O +CH₃OH II +OH	UNK	11.100		2012 January
10	16 38 9.5	-47 05 0.6	337.6124	-0.0598	G337.613-0.060	337.612-0.060	Image	Descr	1720 MHz;	1720	-39.5;-41.5	-40.2	0.83	ATCA	6B	40.000	7	+H₂O +CH₃OH II +OH	SFR_MIXED	12.500		2012 January
11	16 46 5.9	-45 36 43.7	339.6219	-0.1205	G339.622-0.121	339.622-0.120	Image	Descr	1720 MHz;	1720	-32;-37.3	-34	6.75	ATCA	6B	40.000	7	+H₂O -CH₃OH I +CH₃OH II +OH	SFR	13.100		2011 January
12	16 52 4.7	-46 08 34.1	339.8840	-1.2588	G339.884-1.259	339.884-1.259	Image	Descr	1720 MHz;	1720	-33.6;-39	-37.8	31.85	ATCA	6B	40.000	7	+H₂O +CH₃OH I +CH₃OH II +OH	SFR	2.100		2011 September
13	16 50 14.8	-44 42 26.4	340.7850	-0.0959	G340.785-0.096	340.785-0.096	Image	Descr	1720 MHz;	1720	-99.5;-107	-105.6	1.47	ATCA	6B	40.000	7	+H₂O +CH₃OH I +CH₃OH II +OH	SFR	10.600		2011 January
14	17 02 57.7	-41 41 53	344.5816	-0.0234	G344.582-0.024	344.582-0.023	Image	Descr	1720 MHz;	1720	-3.5;-4.6	-3.9	3.24	ATCA	6B	40.000	7	+H₂O -CH₃OH I +CH₃OH II +OH	SFR	17.800		2012 January
15	17 05 11.2	-41 29 07	345.0034	-0.2244	G345.003-0.224	345.003-0.224	Image	Descr	1720 MHz;	1720	-28.5;-29.8	-29.3	37	ATCA	6B	40.000	7	+H₂O +CH₃OH I +CH₃OH II +OH	SFR	2.700		2010 December
16	16 57 58	-40 16 50.2	345.1175	1.5923	G345.118+1.592	345.117+1.592	Image	Descr	1720 MHz;	1720	-15.5;-17.5	-16.6	8.13	ATCA	6B	40.000	7	-CH₃OH II +OH	SFR	1.400		2010 December
17	16 59 43.7	-40 03 53.8	345.4955	1.4616	G345.495+1.467	345.495+1.462	Image	Descr	1720 MHz;	1720	-26.5;-23	-24	0.69	ATCA	6B	40.000	7	+H₂O +CH₃OH II +OH	GALAXY	1.500		2012 January
18	16 59 44.1	-40 03 50.7	345.4969	1.4613	G345.495+1.467	345.497+1.461	Image	Descr	1720 MHz;	1720	-23.5;-17.5	-21.3	1.57	ATCA	6B	40.000	7	+H₂O +CH₃OH II +OH	GALAXY	1.500		2012 January
19	17 20 6.9	-38 57 12.4	348.7268	-1.0387	G348.704-1.039	348.727-1.039	Image	Descr	1720 MHz;	1720	-12.5;-14.7	-13.4	1.11	ATCA	6B	40.000	7	+H₂O +CH₃OH I +CH₃OH II +OH	UNK	3.400		2012 January
20	17 19 25.4	-37 10 6.7	350.1122	0.0952	G350.112+0.089	350.112+0.095	Image	Descr	1720 MHz;	1720	-63.5;-67	-66.1	0.66	ATCA	6B	40.000	7	+H₂O -CH₃OH I +CH₃OH II +OH	SFR	10.500		2010 December
21	17 23 28.7	-37 01 48.7	350.6860	-0.4909	G350.686-0.491	350.686-0.491	Image	Descr	1720 MHz;	1720	-13;-16.7	-15.1	2.95	ATCA	6B	40.000	7	+H₂O +CH₃OH I +CH₃OH II +OH	SFR	2.100		2012 June
22	17 19 56.3	-35 57 53.1	351.1582	0.7000	G351.161+0.697	351.158+0.699	Image	Descr	1720 MHz;	1720	-7.5;-10.5	-8.6	8.78	ATCA	6B	40.000	7	+H₂O +CH₃OH I +CH₃OH II +OH	SFR_MIXED	1.400		2010 December
23	17 20 53.3	-35 47 2.1	351.4166	0.6452	G351.417+0.645	351.419+0.646	Image	Descr	1720 MHz;	1720	-9.2;-11	-9.8	101.34	ATCA	6B	40.000	7	+H₂O +CH₃OH I +CH₃OH II +OH	SFR	4.300		2012 January
24	17 26 42.5	-36 09 19.8	351.7740	-0.5366	G351.775-0.536	351.774-0.537	Image	Descr	1720 MHz;	1720	-2;5.0	4.3	6.28	ATCA	6B	40.000	7	+H₂O +CH₃OH I +CH₃OH II +OH	SFR	1.300		2012 June
25	17 30 26.2	-34 41 44.7	353.4100	-0.3600	G353.410-0.360	353.410-0.360	Image	Descr	1720 MHz;	1720	-18.7;-21	-19.4	13.63	ATCA	6B	40.000	7	+H₂O +CH₃OH I +CH₃OH II +OH	SFR	3.700		2011 January
26	17 40 57.1	-31 10 59.7	357.5574	-0.3209	G357.558-0.321	357.557-0.321	Image	Descr	1720 MHz;	1720	0.3;-1	-0.2	0.84	ATCA	6B	40.000	7	+H₂O +CH₃OH II +OH	SFR	17.500		2011 January
27	17 47 20.1	-29 11 56.8	359.9700	-0.4568	G359.970-0.457	359.970-0.456	Image	Descr	1720 MHz;	1720	14.0;17.5	15.7	0.46	ATCA	6B	40.000	7	+H₂O -CH₃OH I +CH₃OH II +OH	SFR_MIXED	5.500		2011 January
28	17 46 21.4	-28 35 39.4	0.3760	0.0400	G0.3758+0.0401	000.376+0.040	Image	Descr	1720 MHz;	1720	40.5;41.8	41.2	1.01	ATCA	6B	40.000	7	+H₂O +CH₃OH II +OH	SFR	12.900		2011 January
29	17 47 20	-28 23 13.2	0.6645	-0.0359	G0.6665-0.0344	000.665-0.036	Image	Descr	1720 MHz;	1720	60.0;64.0	61.4	1.53	ATCA	6B	40.000	7	+H₂O +CH₃OH I +CH₃OH II +OH	SFR	7.900		2011 January
30	18 06 19	-21 37 33.5	8.6690	-0.3562	G8.669-0.356	008.669-0.356	Image	Descr	1720 MHz;	1720	39.0;40.5	39.7	2.25	ATCA	6B	40.000	7	+H₂O +CH₃OH I +CH₃OH II +OH	SFR	4.400		2010 December
31	18 08 38.3	-19 51 45.3	10.4737	0.0275	G10.472+0.027	010.474+0.027	Image	Descr	1720 MHz;	1720	64.2;65.4	64.7	1.57	ATCA	6B	40.000	7	+H₂O +CH₃OH I +CH₃OH II +OH -SiO	SFR	8.500		2012 January
32	18 09 39.8	-19 21 21.7	11.0338	0.0617	G11.034+0.062	011.034+0.062	Image	Descr	1720 MHz;	1720	21.3;24.0	23.1	1.63	ATCA	6B	40.000	7	+H₂O -CH₃OH I +CH₃OH II +OH	SFR	2.400		2012 January
33	18 22 26.1	-13 30 09	17.6385	0.1579	G17.638+0.157	017.638+0.158	Image	Descr	1720 MHz;	1720	27.0;29.3	28.6	0.48	ATCA	6B	40.000	7	+H₂O -CH₃OH I +CH₃OH II +OH -SiO	SFR	2.000		2012 June
34	09 03 7.5	-48 30 56.1	269.1409	-1.2136	G269.141-1.214	269.141-1.214	Image	Descr	1720 MHz;	1720	8.5;13.0	10.6	4.35	ATCA	6B	40.000	7	+OH	SFR	2.400		2011 September
35	16 38 52.1	-46 56 17.1	337.8015	-0.0528	G337.802-0.053	337.801-0.053	Image	Descr	1720 MHz;	1720	-43.5;-46.8	-44.9	2.02	ATCA	6B	40.000	7	+OH	SFR	12.300		2012 January
36	17 18 1.4	-37 26 24.9	349.7299	0.1665	G349.730+0.172	349.729+0.166	Image		1720 MHz;	1720	16.0;17.5	16.8	1.58	ATCA	6B	40.000	7	-CH₃OH II +OH	SFR	20.900		2010 May
37	17 18 00	-37 26 9.1	349.7308	0.1729	G349.730+0.172	349.731+0.173	Image		1720 MHz;	1720	15.0;18.0	16.4	0.85	ATCA	6B	40.000	7	-CH₃OH II +OH	SFR	20.800		2010 May
38	17 18 0.9	-37 26 1.8	349.7341	0.1717	G349.730+0.172	349.734+0.172	Image	Descr	1720 MHz;	1720	14.6;16.0	15.3	2.61	ATCA	6B	40.000	7	-CH₃OH II +OH	SFR	20.400		2010 May
39	17 44 58.2	-30 05 49.2	358.9357	-0.4847	G358.936-0.485	358.936-0.485	Image	Descr	1720 MHz;	1720	-5.5;-7.7	-6.8	3.62	ATCA	6B	40.000	7	+OH	UNK	2.700		2011 January
40	17 45 44.6	-30 08 39.2	358.9828	-0.6523	G358.983-0.652	358.983-0.652	Image	Descr	1720 MHz;	1720	-5.5;-7.5	-0.2	0.84	ATCA	6B	40.000	7	+OH	UNK	2.700		2011 January
41	17 45 44.3	-29 01 20	359.9401	-0.0670	G359.9402-0.0670	359.940-0.067	Image	Descr	1720 MHz;	1720	64.5;68.0	66.3	9.54	ATCA	6B	40.000	7	+OH	SFR_MIXED	10.900		2010 May
42	17 48 52.7	-28 11 19.1	1.0100	-0.2246	G1.008-0.237	001.010-0.225	Image	Descr	1720 MHz;	1720	-0.5;-2.5	-1.3	0.71	ATCA	6B	40.000	7	+H₂O +CH₃OH II +OH	SFR	3.300		2011 January
43	18 00 43.9	-23 17 27.5	6.5845	-0.0518	G6.584-0.052	006.584-0.052	Image	Descr	1720 MHz;	1720	4.0;8.0	6.1	5.79	ATCA	6B	40.000	7	+OH	UNK	2.900		2012 January
44	18 01 52.6	-23 19 24.3	6.6867	-0.2966	G6.691-0.291	006.687-0.296	Image	Descr	1720 MHz;	1720	9.0;12.5	11.3	102.34	ATCA	6B	40.000	7	+CH₃OH I +OH	SFR_MIXED	2.900		2012 January
45	18 01 51.1	-23 18 34.4	6.6957	-0.2845	G6.691-0.291	006.696-0.284	Image	Descr	1720 MHz;	1720	9.0;11.5	10.4	15.5	ATCA	6B	40.000	7	+CH₃OH I +OH	SFR_MIXED	2.900		2012 January
46	18 01 50.6	-23 18 18.6	6.6986	-0.2806	G6.691-0.291	006.698-0.281	Image	Descr	1720 MHz;	1720	14.0;17.0	15.7	6.36	ATCA	6B	40.000	7	+CH₃OH I +OH	SFR_MIXED	2.900		2012 January
47	18 01 50.7	-23 18 13.2	6.7001	-0.2802	G6.691-0.291	006.700-0.280	Image	Descr	1720 MHz;	1720	12.0;15.5	13.4	14.66	ATCA	6B	40.000	7	+CH₃OH I +OH	SFR_MIXED	2.900		2012 January
48	18 01 51.7	-23 18 6.9	6.7035	-0.2827	G6.691-0.291	006.703-0.283	Image	Descr	1720 MHz;	1720	8.0;11.0	9.4	12.05	ATCA	6B	40.000	7	+CH₃OH I +OH	SFR_MIXED	2.900		2012 January
49	18 01 51.6	-23 17 56.3	6.7059	-0.2809	G6.691-0.291	006.706-0.281	Image	Descr	1720 MHz;	1720	8.5;14.5	11.8	35.79	ATCA	6B	40.000	7	+CH₃OH I +OH	SFR_MIXED	2.900		2012 January
50	18 14 14	-17 55 55.3	12.8027	-0.2025	G12.797-0.193	012.803-0.202	Image	Descr	1720 MHz;	1720	30.0;34.0	32.5	0.64	ATCA	6B	40.000	7	+H₂O +CH₃OH I +CH₃OH II +OH	SFR	3.000		2011 January
51	18 27 38	-11 56 32	19.6104	-0.2337	G19.609-0.234	019.610-0.234	Image	Descr	1720 MHz;	1720	40.5;47.0	43.9	0.56	ATCA	6B	40.000	7	+H₂O +CH₃OH I +CH₃OH II +OH	SFR	3.300		2012 June

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(oh_data_all.ra_hms) as ra_hms,MAX(oh_data_all.dec_dms) as dec_dms,MAX(oh_data_all.source_name) as source_name,MAX(oh_data_all.ra) as ra,MAX(oh_data_all.dec) as dec,MAX(oh_data_all.l) as l,MAX(oh_data_all.b) as b,MAX(oh_data_all.grp) as grp,MAX(oh_data_all.other_name) as other_name,MAX(oh_data_all.other_desc) as other_desc,BOOL_OR(thermal) as thermal,MAX(oh_data_all.line) as line,MAX(oh_data_all.freq) as freq,MAX(oh_data_all.pol) as pol,MAX(oh_data_all.vrange) as vrange,MAX(oh_data_all.vpeak) as vpeak,MAX(oh_data_all.peak) as peak,MAX(oh_data_all.fwhm) as fwhm,MAX(oh_data_all.int) as int,MAX(oh_data_all.rms) as rms,MAX(oh_data_all.units) as units,MAX(oh_data_all.units_rms) as units_rms,MAX(oh_data_all.date_txt) as date_txt,MAX(oh_data_all.telescope_ref) as telescope_ref,MAX(oh_data_all.telescope_conf) as telescope_conf,MAX(oh_data_all.v_step) as v_step,MAX(oh_data_all.beam) as beam,MAX(oh_data_all.beam_maj) as beam_maj,MAX(oh_data_all.beam_min) as beam_min,MAX(oh_data_all.beam_pa) as beam_pa,MAX(oh_data_all.ref) as ref,MAX(oh_data_all.list_ref) as list_ref,MAX(oh_data_all.ascii) as ascii,MAX(oh_data_all.url) as url,MAX(oh_data_all.image) as image,MAX(oh_data_all.image2) as image2,MAX(oh_data_all.image3) as image3,MAX(oh_data_all.descr) as descr,MAX(oh_data_all.id) as id,BOOL_OR(mjy_flag) as mjy_flag,BOOL_OR(rms_mjy_flag) as rms_mjy_flag,MAX(oh_data_all.dist) as dist,1 as dist_parallax,MAX(oh_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 oh_data_all  LEFT JOIN all_objects_withmet ON oh_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 oh_data_all.line=transitions."Line"  WHERE ref ilike 'OGB20' AND detected=true AND hide=false GROUP BY ref

select oh_data_all.ra_hms,oh_data_all.dec_dms,oh_data_all.source_name,oh_data_all.ra,oh_data_all.dec,oh_data_all.l,oh_data_all.b,oh_data_all.grp,oh_data_all.other_name,oh_data_all.other_desc,oh_data_all.thermal,oh_data_all.line,oh_data_all.freq,oh_data_all.pol,oh_data_all.vrange,oh_data_all.vpeak,oh_data_all.peak,oh_data_all.fwhm,oh_data_all.int,oh_data_all.rms,oh_data_all.units,oh_data_all.units_rms,oh_data_all.date_txt,oh_data_all.telescope_ref,oh_data_all.telescope_conf,oh_data_all.v_step,oh_data_all.beam,oh_data_all.beam_maj,oh_data_all.beam_min,oh_data_all.beam_pa,oh_data_all.ref,oh_data_all.list_ref,oh_data_all.ascii,oh_data_all.url,oh_data_all.image,oh_data_all.image2,oh_data_all.image3,oh_data_all.descr,oh_data_all.id,oh_data_all.mjy_flag,oh_data_all.rms_mjy_flag,oh_data_all.dist,oh_data_all.dist_parallax,oh_data_all.date_txt,line_det,type,simbad_types_cat FROM oh_data_all   LEFT JOIN all_objects_withmet ON oh_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 oh_data_all.line=transitions."Line"  WHERE ref ilike 'OGB20' AND detected=true AND hide=false ORDER BY detected DESC,id

Display data from paper

OGB20 - MAGMO: polarimetry of 1720-MHz OH masers towards southern star-forming regions

View as list of objects

Detection table from Ogbodo et al. (2020)