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CAS97 - Coincidence of maser emission from OH at 6.035 GHz and methanol at 6.668 GHz

Short title: Caswell (1997)
Authors: Caswell, J. L.
Journal: Monthly Notices of the Royal Astronomical Society, Volume 289, Issue 1, pp. 203-224.
Bibcode:
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Target type: Known_Class_II
Transitions: OH_6035,CH3OH_6(II)

Abstract
Massive newly formed stars are obscured by dust, and their clearest signature is often at radio frequencies from strong molecular maser emission. In some cases, both hydroxyl and methanol masers are present. Maser position measurements of both species are then especially useful for exploring the immediate surroundings of the new-born star. The present study used the Australia Telescope Compact Array to observe 6.035-GHz OH maser emission in 35 fields 30 of these were also observed at the 6.668-GHz methanol transition. In many of the fields the masers were found to be grouped into several distinct maser sites, allowing a total of 62 sites to be studied. Relative positions at 6.035 and 6.668GHz could be registered to an accuracy of 0.1arcsec. 29 sites harbour both 6.035-GHz OH and 6.668-GHz methanol, and most of these have sufficient maser features to reveal that the distributions of OH and methanol are largely co-extensive, with total extents between 10 and 30mpc (milliparsec). Elongated morphologies are common in both the OH and methanol distributions. The new-born star associated with each group of masers is not visible, but is expected to generate an enveloping ultracompact H II region. Such H II regions have been detected (as compact radio sources, mostly by searching continuum images made from the present observations) at 23 of the present maser sites. For these, the projected distribution of the masers was mapped relative to the H II region. In most cases, the masers are confined to a zone that covers only a portion of the H II region, and is commonly offset from the centre of the H II region, but rarely lies at its projected boundary. The masing zone can be plausibly identified as centred on the (unseen) principal exciting star of the H II region, with the maser distribution corresponding to a torus or ring, in some cases small enough to suggest that it may be embedded within the H II region. The fact that the typical extent is confined to less than 30mpc can be used in some cases to establish distances once the angular extent has been measured. The sample of maser sites studied here is OH-selected and thus biased towards sites with strong OH emission. The high rate of strong H II region detections among them indicates a marked trend (but not a close correlation) for H II regions to be more prominent towards OH-favoured maser sites than methanol-favoured sites.

Abstract

Massive newly formed stars are obscured by dust, and their clearest signature is often at radio frequencies from strong molecular maser emission. In some cases, both hydroxyl and methanol masers are present. Maser position measurements of both species are then especially useful for exploring the immediate surroundings of the new-born star. The present study used the Australia Telescope Compact Array to observe 6.035-GHz OH maser emission in 35 fields 30 of these were also observed at the 6.668-GHz methanol transition. In many of the fields the masers were found to be grouped into several distinct maser sites, allowing a total of 62 sites to be studied. Relative positions at 6.035 and 6.668GHz could be registered to an accuracy of 0.1arcsec. 29 sites harbour both 6.035-GHz OH and 6.668-GHz methanol, and most of these have sufficient maser features to reveal that the distributions of OH and methanol are largely co-extensive, with total extents between 10 and 30mpc (milliparsec). Elongated morphologies are common in both the OH and methanol distributions. The new-born star associated with each group of masers is not visible, but is expected to generate an enveloping ultracompact H II region. Such H II regions have been detected (as compact radio sources, mostly by searching continuum images made from the present observations) at 23 of the present maser sites. For these, the projected distribution of the masers was mapped relative to the H II region. In most cases, the masers are confined to a zone that covers only a portion of the H II region, and is commonly offset from the centre of the H II region, but rarely lies at its projected boundary. The masing zone can be plausibly identified as centred on the (unseen) principal exciting star of the H II region, with the maser distribution corresponding to a torus or ring, in some cases small enough to suggest that it may be embedded within the H II region. The fact that the typical extent is confined to less than 30mpc can be used in some cases to establish distances once the angular extent has been measured. The sample of maser sites studied here is OH-selected and thus biased towards sites with strong OH emission. The high rate of strong H II region detections among them indicates a marked trend (but not a close correlation) for H II regions to be more prominent towards OH-favoured maser sites than methanol-favoured sites.

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ID	Obs. RA	Obs. Dec	l	b	Group id	grpv	Source name	Descr.	Line	Frequency	V_peak	F_peak	Telescope	Detection	Class	Dist. (parallax)	Date
	(J2000)	(J2000)	(deg.)	(deg.)					OH	(MHz)	(km/s)	(Jy)		Yes/No		(kpc)
1	07 44 52	-24 07 42.3	240.3158	0.0712	G240.316+0.071	G240.3158+0.0712	240.316+0.071	Descr	6035 MHz;	6035	63.6	2.2	ATCA	+H₂O -CH₃OH II +OH	SFR_MIXED		95jul
	07 44 52	-24 07 42.3	240.3158	0.0712	G240.316+0.071	G240.3158+0.0712	240.316+0.071	Descr	6035 MHz;	6035	63.6	2.2	ATCA	+H₂O -CH₃OH II +OH	SFR_MIXED		95jul
3	10 24 10.7	-57 52 34	284.3505	-0.4182	G284.351-0.418	G284.3505-0.4182	284.351-0.418		6035 MHz;	6035	4.7	2.7	ATCA	+H₂O -CH₃OH I +CH₃OH II +OH	SFR		95jul.94may
	10 24 10.7	-57 52 34	284.3505	-0.4182	G284.351-0.418	G284.3505-0.4182	284.351-0.418		6035 MHz;	6035	4.7	2.7	ATCA	+H₂O -CH₃OH I +CH₃OH II +OH	SFR		95jul.94may
5	10 31 29.9	-58 02 18.5	285.2634	-0.0500	G285.263-0.050	G285.2634-0.0499	285.263-0.050	Descr	6035 MHz;	6035	9.3	2.1	ATCA	+H₂O +CH₃OH II +OH	SFR_MIXED		94may
	10 31 29.9	-58 02 18.5	285.2634	-0.0500	G285.263-0.050	G285.2634-0.0499	285.263-0.050	Descr	6035 MHz;	6035	9.3	2.1	ATCA	+H₂O +CH₃OH II +OH	SFR_MIXED		94may
7	11 35 32.2	-63 14 43	294.5114	-1.6212	G294.511-1.621	G294.5114-1.6212	294.511-1.621		6035 MHz;	6035	-12	7.6	ATCA	+H₂O -CH₃OH I +CH₃OH II +OH	SFR		95jul
	11 35 32.2	-63 14 43	294.5114	-1.6212	G294.511-1.621	G294.5114-1.6212	294.511-1.621		6035 MHz;	6035	-12	7.6	ATCA	+H₂O -CH₃OH I +CH₃OH II +OH	SFR		95jul
9	12 34 53.3	-61 39 39.9	300.9688	1.1476	G300.969+1.148	G300.9688+1.1476	300.969+1.148		6035 MHz;	6035	-37.8	4.7	ATCA	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		93nov
	12 34 53.3	-61 39 39.9	300.9688	1.1476	G300.969+1.148	G300.9688+1.1476	300.969+1.148		6035 MHz;	6035	-37.8	4.7	ATCA	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		93nov
11	13 11 16.9	-62 45 54.7	305.2000	0.0191	G305.200+0.019	G305.2000+0.0190	305.200+0.019		6035 MHz;	6035	-33.2	7.2	ATCA	+H₂O -CH₃OH I +CH₃OH II +OH	SFR		93nov
	13 11 16.9	-62 45 54.7	305.2000	0.0191	G305.200+0.019	G305.2000+0.0190	305.200+0.019		6035 MHz;	6035	-33.2	7.2	ATCA	+H₂O -CH₃OH I +CH₃OH II +OH	SFR		93nov
13	13 50 41.8	-61 35 10.1	309.9205	0.4789	G309.921+0.479	G309.9205+0.4789	309.921+0.479	Descr	6035 MHz;	6035	-59.8	17	ATCA	-H₂O +CH₃OH II +OH	SFR		95jul
	13 50 41.8	-61 35 10.1	309.9205	0.4789	G309.921+0.479	G309.9205+0.4789	309.921+0.479	Descr	6035 MHz;	6035	-59.8	17	ATCA	-H₂O +CH₃OH II +OH	SFR		95jul
15	14 06 18.4	-62 00 15.3	311.5955	-0.3984	G311.596-0.398	G311.5955-0.3984	311.596-0.398	Descr	6035 MHz;	6035	31.4	0.7	ATCA	+OH	SFR		95jul
	14 06 18.4	-62 00 15.3	311.5955	-0.3984	G311.596-0.398	G311.5955-0.3984	311.596-0.398	Descr	6035 MHz;	6035	31.4	0.7	ATCA	+OH	SFR		95jul
17	14 06 38.7	-61 58 23.1	311.6427	-0.3800	G311.643-0.380	G311.6427-0.3800	311.643-0.380	Descr	6035 MHz;	6035	33.8	0.5	ATCA	+H₂O +CH₃OH II +OH	SFR_MIXED		95jul
	14 06 38.7	-61 58 23.1	311.6427	-0.3800	G311.643-0.380	G311.6427-0.3800	311.643-0.380	Descr	6035 MHz;	6035	33.8	0.5	ATCA	+H₂O +CH₃OH II +OH	SFR_MIXED		95jul
19	15 29 19.3	-56 31 21.3	323.4591	-0.0785	G323.459-0.079	G323.4591-0.0786	323.459-0.079	Descr	6035 MHz;	6035	-70.2	23.6	ATCA	-H₂O +CH₃OH II +OH	SFR		94may
	15 29 19.3	-56 31 21.3	323.4591	-0.0785	G323.459-0.079	G323.4591-0.0786	323.459-0.079	Descr	6035 MHz;	6035	-70.2	23.6	ATCA	-H₂O +CH₃OH II +OH	SFR		94may
21	15 54 6.4	-53 11 41.1	328.3070	0.4303	G328.307+0.430	G328.3070+0.4304	328.307+0.430		6035 MHz;	6035	-90.4	2.4	ATCA	+H₂O -CH₃OH II +OH	SFR		94may
	15 54 6.4	-53 11 41.1	328.3070	0.4303	G328.307+0.430	G328.3070+0.4304	328.307+0.430		6035 MHz;	6035	-90.4	2.4	ATCA	+H₂O -CH₃OH II +OH	SFR		94may
23	15 55 48.4	-52 43 6.7	328.8082	0.6331	G328.809+0.633	G328.8087+0.6330	328.808+0.633		6035 MHz;	6035	-45.7	8.9	ATCA	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		94may
	15 55 48.4	-52 43 6.7	328.8082	0.6331	G328.809+0.633	G328.8087+0.6330	328.808+0.633		6035 MHz;	6035	-45.7	8.9	ATCA	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		94may
25	15 55 48.7	-52 43 5.5	328.8091	0.6328	G328.809+0.633	G328.8087+0.6330	328.809+0.633		6035 MHz;	6035	-45	1.3	ATCA	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		94may
	15 55 48.7	-52 43 5.5	328.8091	0.6328	G328.809+0.633	G328.8087+0.6330	328.809+0.633		6035 MHz;	6035	-45	1.3	ATCA	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		94may
27	16 12 9.8	-51 28 37.8	331.5114	-0.1023	G331.512-0.102	G331.5118-0.1025	331.511-0.102	Descr	6035 MHz;	6035	-90	3	ATCA	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		94may
	16 12 9.8	-51 28 37.8	331.5114	-0.1023	G331.512-0.102	G331.5118-0.1025	331.511-0.102	Descr	6035 MHz;	6035	-90	3	ATCA	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		94may
29	16 12 9.9	-51 28 37.1	331.5118	-0.1025	G331.512-0.102	G331.5118-0.1025	331.512-0.103	Descr	6035 MHz;	6035	-86.8	1.5	ATCA	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		94may
	16 12 9.9	-51 28 37.1	331.5118	-0.1025	G331.512-0.102	G331.5118-0.1025	331.512-0.103	Descr	6035 MHz;	6035	-86.8	1.5	ATCA	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		94may
31	16 12 09	-51 25 47.7	331.5423	-0.0665	G331.542-0.066	G331.5424-0.0665	331.542-0.066		6035 MHz;	6035	-86	5.1	ATCA	-H₂O +CH₃OH I +CH₃OH II +OH	SFR_MIXED		94may
	16 12 09	-51 25 47.7	331.5423	-0.0665	G331.542-0.066	G331.5424-0.0665	331.542-0.066		6035 MHz;	6035	-86	5.1	ATCA	-H₂O +CH₃OH I +CH₃OH II +OH	SFR_MIXED		94may
33	16 21 2.9	-50 35 10	333.1353	-0.4315	G333.128-0.432	G333.1352-0.4317	333.135-0.431		6035 MHz;	6035	-51.4	7.3	ATCA	+H₂O +CH₃OH I +CH₃OH II +OH	SFR_MIXED		93nov
	16 21 2.9	-50 35 10	333.1353	-0.4315	G333.128-0.432	G333.1352-0.4317	333.135-0.431		6035 MHz;	6035	-51.4	7.3	ATCA	+H₂O +CH₃OH I +CH₃OH II +OH	SFR_MIXED		93nov
35	16 21 2.8	-50 35 12	333.1347	-0.4317	G333.128-0.432	G333.1352-0.4317	333.135-0.431s		6035 MHz;	6035	-50	1.1	ATCA	+H₂O +CH₃OH I +CH₃OH II +OH	SFR_MIXED		93nov
	16 21 2.8	-50 35 12	333.1347	-0.4317	G333.128-0.432	G333.1352-0.4317	333.135-0.431s		6035 MHz;	6035	-50	1.1	ATCA	+H₂O +CH₃OH I +CH₃OH II +OH	SFR_MIXED		93nov
37	16 22 11	-50 05 56.5	333.6076	-0.2147	G333.608-0.215	G333.6077-0.2147	333.608-0.215		6035 MHz;	6035	-51.6	3.1	ATCA	+H₂O +CH₃OH I +OH	SFR_MIXED		94may
	16 22 11	-50 05 56.5	333.6076	-0.2147	G333.608-0.215	G333.6077-0.2147	333.608-0.215		6035 MHz;	6035	-51.6	3.1	ATCA	+H₂O +CH₃OH I +OH	SFR_MIXED		94may
39	16 38 9.5	-47 04 59.9	337.6125	-0.0597	G337.613-0.060	G337.6125-0.0597	337.613-0.060		6035 MHz;	6035	-42	2.4	ATCA	+H₂O +CH₃OH II +OH	SFR_MIXED		94may
	16 38 9.5	-47 04 59.9	337.6125	-0.0597	G337.613-0.060	G337.6125-0.0597	337.613-0.060		6035 MHz;	6035	-42	2.4	ATCA	+H₂O +CH₃OH II +OH	SFR_MIXED		94may
41	16 38 29.7	-47 00 35.8	337.7053	-0.0532	G337.705-0.053	G337.7053-0.0532	337.705-0.053		6035 MHz;	6035	-50.6	1.1	ATCA	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		95jul
	16 38 29.7	-47 00 35.8	337.7053	-0.0532	G337.705-0.053	G337.7053-0.0532	337.705-0.053		6035 MHz;	6035	-50.6	1.1	ATCA	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		95jul
43	16 38 9.1	-46 11 3.1	338.2803	0.5424	G338.280+0.542	G338.2803+0.5424	338.280+0.542		6035 MHz;	6035	-56.8	2.3	ATCA	+H₂O +CH₃OH II +OH	SFR		94may
	16 38 9.1	-46 11 3.1	338.2803	0.5424	G338.280+0.542	G338.2803+0.5424	338.280+0.542		6035 MHz;	6035	-56.8	2.3	ATCA	+H₂O +CH₃OH II +OH	SFR		94may
45	16 50 14.8	-44 42 26.7	340.7849	-0.0960	G340.785-0.096	G340.7850-0.0960	340.785-0.096	Descr	6035 MHz;	6035	-102	7.5	ATCA	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		94may
	16 50 14.8	-44 42 26.7	340.7849	-0.0960	G340.785-0.096	G340.7850-0.0960	340.785-0.096	Descr	6035 MHz;	6035	-102	7.5	ATCA	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		94may
47	17 00 10.9	-42 07 19.4	343.9294	0.1249	G343.929+0.125	G343.9294+0.1249	343.929+0.125		6035 MHz;	6035	13.6	4.2	ATCA	-H₂O +CH₃OH II +OH	SFR		94may
	17 00 10.9	-42 07 19.4	343.9294	0.1249	G343.929+0.125	G343.9294+0.1249	343.929+0.125		6035 MHz;	6035	13.6	4.2	ATCA	-H₂O +CH₃OH II +OH	SFR		94may
49	17 05 11.2	-41 29 07	345.0034	-0.2244	G345.003-0.224	G345.0033-0.2243	345.003-0.224		6035 MHz;	6035	-26.2	3.2	ATCA	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		94may
	17 05 11.2	-41 29 07	345.0034	-0.2244	G345.003-0.224	G345.0033-0.2243	345.003-0.224		6035 MHz;	6035	-26.2	3.2	ATCA	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		94may
51	16 56 47.6	-40 14 25.7	345.0095	1.7924	G345.010+1.792	G345.0097+1.7924	345.010+1.792	Descr	6035 MHz;	6035	-21.5	1 1	ATCA	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		94may
	16 56 47.6	-40 14 25.7	345.0095	1.7924	G345.010+1.792	G345.0097+1.7924	345.010+1.792	Descr	6035 MHz;	6035	-21.5	1 1	ATCA	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		94may
53	17 06 50.6	-40 50 59.6	345.6982	-0.0897	G345.698-0.090	G345.6982-0.0898	345.698-0.090	Descr	6035 MHz;	6035	-4.8	3.8	ATCA	+H₂O -CH₃OH I +CH₃OH II +OH	SFR		95jul
	17 06 50.6	-40 50 59.6	345.6982	-0.0897	G345.698-0.090	G345.6982-0.0898	345.698-0.090	Descr	6035 MHz;	6035	-4.8	3.8	ATCA	+H₂O -CH₃OH I +CH₃OH II +OH	SFR		95jul
55	17 11 50.9	-39 09 29	347.6279	0.1486	G347.628+0.148	G347.6281+0.1483	347.628+0.149		6035 MHz;	6035	-96.7	5	ATCA	+H₂O +CH₃OH II +OH	SFR_MIXED		93nov
	17 11 50.9	-39 09 29	347.6279	0.1486	G347.628+0.148	G347.6281+0.1483	347.628+0.149		6035 MHz;	6035	-96.7	5	ATCA	+H₂O +CH₃OH II +OH	SFR_MIXED		93nov
57	17 19 20.4	-39 03 51.6	348.5498	-0.9788	G348.550-0.979	G348.5498-0.9788	348.550-0.979	Descr	6035 MHz;	6035	-13.1	1.4	ATCA	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		95jul
	17 19 20.4	-39 03 51.6	348.5498	-0.9788	G348.550-0.979	G348.5498-0.9788	348.550-0.979	Descr	6035 MHz;	6035	-13.1	1.4	ATCA	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		95jul
59	17 20 53.4	-35 47 1.2	351.4169	0.6453	G351.417+0.645	G351.4169+0.6451	351.417+0.845		6035 MHz;	6035	-10.4	135	ATCA	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		95jul
	17 20 53.4	-35 47 1.2	351.4169	0.6453	G351.417+0.645	G351.4169+0.6451	351.417+0.845		6035 MHz;	6035	-10.4	135	ATCA	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		95jul
61	17 25 25.1	-36 01 02	351.7428	-0.2432	G351.743-0.243	G351.7428-0.2432	351.581-0.353	Descr	6035 MHz;	6035	-93.8	10	ATCA	+CH₃OH II +OH	UNK		93nov
	17 25 25.1	-36 01 02	351.7428	-0.2432	G351.743-0.243	G351.7428-0.2432	351.581-0.353	Descr	6035 MHz;	6035	-93.8	10	ATCA	+CH₃OH II +OH	UNK		93nov
63	17 26 42.6	-36 09 16	351.7750	-0.5362	G351.775-0.536	G351.7746-0.5364	351.775-0.536	Descr	6035 MHz;	6035	-8.7	2	ATCA	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		94may
	17 26 42.6	-36 09 16	351.7750	-0.5362	G351.775-0.536	G351.7746-0.5364	351.775-0.536	Descr	6035 MHz;	6035	-8.7	2	ATCA	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		94may
65	17 30 26.2	-34 41 45.7	353.4098	-0.3602	G353.410-0.360	G353.4099-0.3602	353.410-0.360	Descr	6035 MHz;	6035	-20.7	31.5	ATCA	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		94may
	17 30 26.2	-34 41 45.7	353.4098	-0.3602	G353.410-0.360	G353.4099-0.3602	353.410-0.360	Descr	6035 MHz;	6035	-20.7	31.5	ATCA	+H₂O +CH₃OH I +CH₃OH II +OH	SFR		94may
67	17 31 15.5	-33 14 5.6	354.7243	0.3001	G354.724+0.300	G354.7243+0.3002	354.724+0.300		6035 MHz;	6035	90.2	0.6	ATCA	+H₂O +CH₃OH II +OH	SFR		95jul
	17 31 15.5	-33 14 5.6	354.7243	0.3001	G354.724+0.300	G354.7243+0.3002	354.724+0.300		6035 MHz;	6035	90.2	0.6	ATCA	+H₂O +CH₃OH II +OH	SFR		95jul
69	17 33 29.1	-32 47 58.8	355.3437	0.1472	G355.344+0.147	G355.3437+0.1473	355.344+0.147		6035 MHz;	6035	18	3.4	ATCA	+H₂O -CH₃OH I +CH₃OH II +OH	SFR		95jul
	17 33 29.1	-32 47 58.8	355.3437	0.1472	G355.344+0.147	G355.3437+0.1473	355.344+0.147		6035 MHz;	6035	18	3.4	ATCA	+H₂O -CH₃OH I +CH₃OH II +OH	SFR		95jul
71	17 43 25.6	-29 39 18.3	359.1372	0.0315	G359.1374+0.0315	G359.1374+0.0315	359.138+0.031	Descr	6035 MHz;	6035	-1.8	1.3	ATCA	+OH	SFR_MIXED		95jul
	17 43 25.6	-29 39 18.3	359.1372	0.0315	G359.1374+0.0315	G359.1374+0.0315	359.138+0.031	Descr	6035 MHz;	6035	-1.8	1.3	ATCA	+OH	SFR_MIXED		95jul
73	17 47 18.6	-28 22 54.6	0.6663	-0.0289	G0.6666-0.0338	G0.6667-0.0337	0.666-0.029		6035 MHz;	6035	72.6	9.4	ATCA	+H₂O +CH₃OH I +CH₃OH II +OH +SiO			93nov
	17 47 18.6	-28 22 54.6	0.6663	-0.0289	G0.6666-0.0338	G0.6667-0.0337	0.666-0.029		6035 MHz;	6035	72.6	9.4	ATCA	+H₂O +CH₃OH I +CH₃OH II +OH +SiO			93nov
75	17 47 20.1	-28 23 6.2	0.6664	-0.0353	G0.6666-0.0338	G0.6667-0.0337	0.666-0.035		6035 MHz;	6035	67	2.3	ATCA	+H₂O +CH₃OH I +CH₃OH II +OH +SiO			93nov
	17 47 20.1	-28 23 6.2	0.6664	-0.0353	G0.6666-0.0338	G0.6667-0.0337	0.666-0.035		6035 MHz;	6035	67	2.3	ATCA	+H₂O +CH₃OH I +CH₃OH II +OH +SiO			93nov
77	18 12 11.4	-18 41 29.1	11.9040	-0.1411	G11.904-0.141	G11.9040-0.1412	11.904-0.141	Descr	6035 MHz;	6035	42.8	4.4	ATCA	+H₂O -CH₃OH I +CH₃OH II +OH	SFR		95jul
	18 12 11.4	-18 41 29.1	11.9040	-0.1411	G11.904-0.141	G11.9040-0.1412	11.904-0.141	Descr	6035 MHz;	6035	42.8	4.4	ATCA	+H₂O -CH₃OH I +CH₃OH II +OH	SFR		95jul
79	18 20 24.8	-16 11 34.1	15.0347	-0.6770	G15.034-0.677	G15.0346-0.6770	15.034-0.677	Descr	6035 MHz;	6035	21.2	22	ATCA	+H₂O +CH₃OH I +CH₃OH II +OH			95jul
	18 20 24.8	-16 11 34.1	15.0347	-0.6770	G15.034-0.677	G15.0346-0.6770	15.034-0.677	Descr	6035 MHz;	6035	21.2	22	ATCA	+H₂O +CH₃OH I +CH₃OH II +OH			95jul

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.grpv) as grpv,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 'CAS97' 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.grpv,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 'CAS97' AND detected=true AND hide=false ORDER BY detected DESC,id

Display data from paper

CAS97 - Coincidence of maser emission from OH at 6.035 GHz and methanol at 6.668 GHz

View as list of objects

Detection table from Caswell (1997)