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• Abstract

  OH/IR star candidates were selected on the basis of their IRAS colors and searched for OH maser emission at 1612, 1665, and 1667 MHZ. Of the 48 candidates, 16 were known OH/IR stars, and there were nine new detections of OH emission. OH was not detected in 23 objects, these being identified as nine carbon stars, eight emission-line stars, two young stellar objects, and four Mira-like stars. These findings imply that the frequency of binary OH/IR-like objects is not as large as has been suggested. JHKL magnitudes were obtained for 22 stars. The near- and far-infrared color criteria for identifying OH/IR stars are discussed.

  Comments: Spectral type was set to: ""S"", where only one peak was found. ""D"", where two peaks were found. Velocity resolution: 0.90 km/s Upper limit for non-detections: 1 and 2 Jy (3σ) Only OH/IR stars and non-masing Mira variables are included.

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ID	Obs. RA	Obs. Dec	l	b	Group id	Source name	Frequency	Vrange	Vpeak	Fpeak	List	Detection	Class	Dist. (parallax)	Ref.
	(J2000)	(J2000)	(deg.)	(deg.)			(MHz)	(km/s)	(km/s)	(Jy)		Yes/No		(kpc)
1	11 46 13.7	-63 47 12	295.8057	-1.8208	G295.806-1.821	IRAS 11438-6330	1612	26.9	-43.8	11.400	ENG15	-H2O +OH	EVOLVED		GAY89
2	13 47 45.8	-61 24 27	309.6190	0.7308	G309.619+0.731	IRAS 13442-6109	1612	48.4	-73.2	3.100	ENG15	+H2O +OH	EVOLVED		GAY89
3	15 02 11.3	-59 38 16	318.7754	-0.8498	G318.775-0.850	IRAS 14582-5926	1612	39.0	-57.5	4.500	ENG15	+H2O +OH	EVOLVED		GAY89
4	16 14 2.5	-42 13 03	338.1225	6.4028	G338.123+6.403	IRAS 16105-4205	1612	26.9	-96.5	59.000	ENG15	-H2O +OH	EVOLVED		GAY89
	16 14 2.5	-42 13 03	338.1225	6.4028	G338.123+6.403	IRAS 16105-4205	1667	29.0	-98.0	5.900	ENG15	-H2O +OH	EVOLVED		GAY89
6	16 36 31.9	-48 54 39	336.0739	-1.0829	G336.075-1.084	IRAS 16327-4848	1612	36.9	-90.0	2.000	ENG15	-H2O +OH +SiO	EVOLVED		GAY89
	16 36 31.9	-48 54 39	336.0739	-1.0829	G336.075-1.084	IRAS 16327-4848	1665	88.0	-88.0	12.500	ENG15	-H2O +OH +SiO	EVOLVED		GAY89
8	16 49 33.7	-40 27 38	343.9670	2.7206	G343.967+2.721	IRAS 16460-4022	1612	34.4	-46.6	10.700	ENG15	+H2O +OH	EVOLVED		GAY89
9	17 36 36.9	-62 35 56	329.8800	-15.8707	G329.880-15.871	IRAS 17319-6234	1612	28.8	-20.7	8.600	ENG15	+OH +SiO	EVOLVED		GAY89
10	17 44 22.6	-31 55 39	357.3085	-1.3330	G357.309-1.333	IRAS 17411-3154	1612	37.2	-39.4	134.500	ENG15	-H2O +OH +SiO	EVOLVED		GAY89
	17 44 22.6	-31 55 39	357.3085	-1.3330	G357.309-1.333	IRAS 17411-3154	1667	36.8	-40.7	19.000	ENG15	-H2O +OH +SiO	EVOLVED		GAY89
12	18 50 29.2	-47 59 11	348.2239	-19.6526	G348.224-19.653	IRAS 18467-4802	1612	24.2	-59.5	30.900	ENG15	+H2O +OH +SiO	EVOLVED		GAY89
13	17 35 59.6	-33 21 41	355.1562	-0.5988	G355.156-0.599	IRAS 17327-3319	1612	24.0	-24.0	14.000	ENG15	+OH +SiO	EVOLVED		GAY89

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ID	Obs. RA	Obs. Dec	l	b	Group id	Source name	Line	Fpeak	List	Detection	Class	Ref.
	(J2000)	(J2000)	(deg.)	(deg.)			OH	(Jy)		Yes/No
1	11 46 13.7	-63 47 12	295.8057	-1.8208	G295.806-1.821	IRAS 11438-6330	1.665 GHz;	2.000	ENG15	-H2O +OH	EVOLVED	GAY89
2	11 46 13.7	-63 47 12	295.8057	-1.8208	G295.806-1.821	IRAS 11438-6330	1.667 GHz;		ENG15	-H2O +OH	EVOLVED	GAY89
3	13 47 45.8	-61 24 27	309.6190	0.7308	G309.619+0.731	IRAS 13442-6109	1.665 GHz;	2.000	ENG15	+H2O +OH	EVOLVED	GAY89
4	13 47 45.8	-61 24 27	309.6190	0.7308	G309.619+0.731	IRAS 13442-6109	1.667 GHz;	2.000	ENG15	+H2O +OH	EVOLVED	GAY89
5	15 02 11.3	-59 38 16	318.7754	-0.8498	G318.775-0.850	IRAS 14582-5926	1.665 GHz;	2.000	ENG15	+H2O +OH	EVOLVED	GAY89
6	15 02 11.3	-59 38 16	318.7754	-0.8498	G318.775-0.850	IRAS 14582-5926	1.667 GHz;	2.000	ENG15	+H2O +OH	EVOLVED	GAY89
7	16 14 2.5	-42 13 03	338.1225	6.4028	G338.123+6.403	IRAS 16105-4205	1.665 GHz;	2.000	ENG15	-H2O +OH	EVOLVED	GAY89
8	16 36 31.9	-48 54 39	336.0739	-1.0829	G336.075-1.084	IRAS 16327-4848	1.667 GHz;	2.000	ENG15	-H2O +OH +SiO	EVOLVED	GAY89
9	16 49 33.7	-40 27 38	343.9670	2.7206	G343.967+2.721	IRAS 16460-4022	1.665 GHz;	2.000	ENG15	+H2O +OH	EVOLVED	GAY89
10	16 49 33.7	-40 27 38	343.9670	2.7206	G343.967+2.721	IRAS 16460-4022	1.667 GHz;		ENG15	+H2O +OH	EVOLVED	GAY89
11	17 36 36.9	-62 35 56	329.8800	-15.8707	G329.880-15.871	IRAS 17319-6234	1.665 GHz;	2.000	ENG15	+OH +SiO	EVOLVED	GAY89
12	17 36 36.9	-62 35 56	329.8800	-15.8707	G329.880-15.871	IRAS 17319-6234	1.667 GHz;		ENG15	+OH +SiO	EVOLVED	GAY89
13	17 44 22.6	-31 55 39	357.3085	-1.3330	G357.309-1.333	IRAS 17411-3154	1.665 GHz;	2.000	ENG15	-H2O +OH +SiO	EVOLVED	GAY89
14	18 50 29.2	-47 59 11	348.2239	-19.6526	G348.224-19.653	IRAS 18467-4802	1.665 GHz;	2.000	ENG15	+H2O +OH +SiO	EVOLVED	GAY89
15	18 50 29.2	-47 59 11	348.2239	-19.6526	G348.224-19.653	IRAS 18467-4802	1.667 GHz;	2.000	ENG15	+H2O +OH +SiO	EVOLVED	GAY89
16	17 35 59.6	-33 21 41	355.1562	-0.5988	G355.156-0.599	IRAS 17327-3319	1.665 GHz;	2.000	ENG15	+OH +SiO	EVOLVED	GAY89
17	17 35 59.6	-33 21 41	355.1562	-0.5988	G355.156-0.599	IRAS 17327-3319	1.667 GHz;	2.000	ENG15	+OH +SiO	EVOLVED	GAY89
18	15 13 42	-55 20 40	322.2591	2.0969	G322.259+2.097	IRAS 15099-5509	1.612 GHz;	1.000	ENG15	+H2O +OH	EVOLVED	GAY89
19	15 13 42	-55 20 40	322.2591	2.0969	G322.259+2.097	IRAS 15099-5509	1.665 GHz;	2.000	ENG15	+H2O +OH	EVOLVED	GAY89
20	15 13 42	-55 20 40	322.2591	2.0969	G322.259+2.097	IRAS 15099-5509	1.667 GHz;	2.000	ENG15	+H2O +OH	EVOLVED	GAY89
21	16 04 30.7	-53 05 28	329.5593	-0.5060	G329.559-0.506	IRAS 16006-5257	1.612 GHz;	1.000	ENG15	+H2O -OH	EVOLVED	GAY89
22	16 04 30.7	-53 05 28	329.5593	-0.5060	G329.559-0.506	IRAS 16006-5257	1.665 GHz;	2.000	ENG15	+H2O -OH	EVOLVED	GAY89
23	16 04 30.7	-53 05 28	329.5593	-0.5060	G329.559-0.506	IRAS 16006-5257	1.667 GHz;	2.000	ENG15	+H2O -OH	EVOLVED	GAY89
24	17 36 11.2	-33 29 41	355.0656	-0.7047	G355.066-0.705	IRAS 17328-3327	1.612 GHz;	1.000	ENG15	+H2O -OH +SiO	EVOLVED	GAY89
25	17 36 11.2	-33 29 41	355.0656	-0.7047	G355.066-0.705	IRAS 17328-3327	1.665 GHz;	2.000	ENG15	+H2O -OH +SiO	EVOLVED	GAY89
26	17 36 11.2	-33 29 41	355.0656	-0.7047	G355.066-0.705	IRAS 17328-3327	1.667 GHz;	2.000	ENG15	+H2O -OH +SiO	EVOLVED	GAY89
27	20 21 21.7	+36 55 55	75.3191	0.1122	G75.319+0.112	IRAS 20194+3646	1.612 GHz;	1.000	ENG15	-H2O -CH3OH II -OH +SiO	EVOLVED	GAY89
28	20 21 21.7	+36 55 55	75.3191	0.1122	G75.319+0.112	IRAS 20194+3646	1.665 GHz;	2.000	ENG15	-H2O -CH3OH II -OH +SiO	EVOLVED	GAY89
29	20 21 21.7	+36 55 55	75.3191	0.1122	G75.319+0.112	IRAS 20194+3646	1.667 GHz;	2.000	ENG15	-H2O -CH3OH II -OH +SiO	EVOLVED	GAY89

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