2003A&A...402..963M

Query : 2003A&A...402..963M

2003A&A...402..963M - Astronomy and Astrophysics, volume 402, 963-970 (2003/5-2)

Optical spectroscopic and 2MASS measurements of Stephenson H_α stars.

MAHESWAR G., MANOJ P. and BHATT H.C.

Abstract (from CDS):

We present the results of spectroscopic observations for 52 objects from the list of H_α emission stars of Stephenson (1986ApJ...300..779S). Out of six known T Tauri stars observed, five showed H_α in emission and in one (StHa 40), H_α changed from being in absorption to emission over a period of two years, accompanied by photometric and spectral type variability. We confirm the T Tauri nature of one Stephenson object (StHa 48) on the basis of the presence of H_α and H_β in emission, Li I λ6708 in absorption, infrared excess and X-ray emission. Among the 52 objects observed, there were other emission line objects: 1 Ke star, 1 BQ[] star, 2 galaxies and 2 Be stars. We present a higher-resolution spectrum of StHa 62 showing permitted and forbidden lines in emission typical of BQ[] stars. Twenty five out of 30 newly observed objects failed to show H_α in emission. We also present 2MASS observations for 112 StHa objects. We suggest three Stephenson objects (StHa 52, 125 and 129) to be YSOs on the basis of 2MASS, IRAS and ROSAT observations. These and all other known YSOs amongst StHa stars are found in regions of star-forming clouds in Taurus, Orion and Ophiuchus. YSOs at high galactic latitudes in other parts of the sky are therefore rare.

Abstract Copyright: ∼

Journal keyword(s): stars: emission-line, Be - stars: general - stars: pre-main sequence - stars: late-type - infrared: stars

VizieR on-line data: <Available at CDS (J/A+A/402/963): table2.dat table2.tex refs.dat>

Simbad objects: 163

Full paper

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Number of rows : 163

N	Identifier	Otype	ICRS (J2000) RA	ICRS (J2000) DEC	Mag U	Mag B	Mag V	Mag R	Mag I	Sp type	#ref 1850 - 2023	#notes
1	HD 224699	Em*	00 00 01.2062601816	+38 51 33.407303148		6.58	6.62			B9	20	0
2	HD 6149	Em*	01 03 03.1505271240	+36 31 51.982729572		8.76	8.56			A3	8	0
3	V* HR Psc	RS*	01 36 27.8122213776	+25 08 35.610898344		12.31	11.13	10.39	9.611	K2e	11	0
4	BD+50 338	SB*	01 44 14.0075445624	+51 19 50.599475364		11.67	10.41			~	3	0
5	EM* StHA 9	Em*	01 52 37.3666282536	+37 20 49.840220580			13.5			~	3	0
6	EM* StHA 10	Em*	01 52 57.3579541744	+08 33 26.915995288		15.641	13.5			M6e	8	0
7	BD+50 395	SB*	01 56 02.6713713888	+50 56 59.233296192		10.56	10.55			Be	7	0
8	BD+50 447	Em*	02 06 09.8801391744	+51 09 48.497379192		10.20	10.12			Be	10	0
9	V* TT Ari	CV*	02 06 53.0797508832	+15 17 41.851038804		10.73	10.20			Bep:	436	0
10	V* BU Ari	Or*	02 56 07.9958860128	+20 03 24.205352688		15.14	14.15	14.50		M1:IIIe	55	1
11	V* WY Ari	Or*	02 56 37.5658451640	+20 05 37.249715436		13.29	12.46			K5/6e	84	0
12	EM* StHA 15	Em*	02 58 29.9325304200	+70 47 33.676907064			13.5			A5	2	0
13	2MASS J03022104+1710342	TT*	03 02 21.0374555016	+17 10 34.377967992			13.5			M2.6	20	0
14	2MASS J03254982+3110237	TT*	03 25 49.8299809128	+31 10 23.845157904		12.85	12.38			G9	13	0
15	CD-22 1266	Em*	03 39 04.1808999936	-21 47 34.055023920		12.68	11.98			G7	8	0
16	EM* StHA 22	Em*	03 40 42.4339983408	+12 56 53.241115164		11.97	11.71			B3V	9	0
17	NGC 1494	GiG	03 57 42.567	-48 54 40.90		12.34		11.46	12.3	~	82	0
18	BIS 2	LP?	03 58 38.7999019152	+69 54 01.409050764			12.5			M0e	8	0
19	EM* LkCa 4	Or*	04 16 28.1067298272	+28 07 35.731363080		13.96	12.78	11.825		K7:Ve	184	0
20	V* FT Tau	Or*	04 23 39.1888788312	+24 56 14.250818940		16.15	14.93	14.70		M2.8	138	0
21	V* IP Tau	Or*	04 24 57.0824018640	+27 11 56.539953888		14.50		12.46		M0:Ve	228	0
22	V* IQ Tau	Or*	04 29 51.5569574040	+26 06 44.859710736	15.43		13.80	12.28	11.11	M0.5	235	0
23	V* GI Tau	Or*	04 33 34.0609697160	+24 21 17.068989852	14.34		13.70	12.15	11.06	K5Ve	284	1
24	V* GK Tau	Or*	04 33 34.5630097872	+24 21 05.855136732	15.50		13.00	12.02	10.62	K7:Ve	303	0
25	V* HN Tau	Or*	04 33 39.3629421552	+17 51 52.289234280		14.76	13.40	13.05		K5e	253	0
26	EM* StHA 32	Sy*	04 37 45.6311945568	-01 19 11.895512556			13.5			C1,1e_CH5	31	0
27	HD 283817	Or*	04 40 32.6389055304	+24 26 31.329782988		11.49	10.61			K2e+A	40	0
28	2MASS J04542368+1709534	TT*	04 54 23.6741496384	+17 09 53.495824464			13.5			M3.4	59	1
29	EM* StHA 35	Em*	05 07 31.8168774528	+01 54 18.605065608			13.5			G0	3	0
30	2MASS J05174675-0358469	TT*	05 17 46.7533020192	-03 58 47.014220820		11.77	11.01			~	4	0
31	EM* StHA 37	TT*	05 20 19.4586296040	-05 45 55.415736900		13.33	12.34	11.787	11.223	~	17	0
32	V* V534 Ori	Or*	05 20 25.7457400968	-05 47 06.386906400		14.021	13.5	12.768	12.146	~	12	0
33	EM* StHA 39	TT*	05 20 31.4286972864	-05 48 24.468692724		12.816	11.754	11.086	10.518	~	8	1
34	2MASS J05281785+0110061	TT*	05 28 17.8490735832	+01 10 06.114956412			13.0			G2-K0e	8	0
35	V* V1650 Ori	Or*	05 29 11.4394458792	-06 08 05.402566536		11.02	10.39			F7	33	0
36	IC 423	MoC	05 33 21	-00 38.0						~	21	0
37	Haro 5-67	TT*	05 33 43.2640558255	-01 08 34.737485440		14.35	13.6			G:e	19	0
38	BD-05 1298	Em*	05 34 15.1985809392	-05 11 49.334146476		11.2	10.698		10.001	F7	31	0
39	HD 290667	SB*	05 34 24.2386871304	-00 55 19.290966492		11.0	10.7			G0	9	0
40	EM* StHA 46	Em*	05 35 10.7129689512	-00 54 44.357196528			10.6			G6	4	1
41	EM* StHA 47	TT*	05 35 22.9366522272	-01 11 24.256679280		13.36	12.49	12.33		K	14	0
42	2MASS J05354326-0034367	Y*O	05 35 43.2743181024	-00 34 36.738766596			12.3			K4	9	0
43	EM* StHA 49	Em*	05 36 20.275	-06 45 06.78			15			~	25	0
44	HD 37903	Em*	05 41 38.3891026008	-02 15 32.479650720	7.32	7.94	7.83	7.64	7.52	B3IV	356	0
45	V* DM Ori	Or*	05 43 39.0072077256	-05 04 02.863206408		12.50	11.54	13.50		G	23	2
46	EM* StHA 55	Mi*	05 46 42.0747792840	+06 43 47.075025792			13.5	12.58		~	18	0
47	BD+37 1572	Em*	06 44 15.6679658184	+36 57 29.079181332		11.01	9.95			G2	3	0
48	EM* StHA 57	LP*	07 01 46.0734541920	+43 19 40.547727228		14.01	11.55			M3	4	0
49	BD+24 1523	Em*	07 05 41.0191664184	+24 18 52.050212280		9.84	9.39			F2	5	0
50	EM* StHA 59	Em*	07 12 48.8709175680	+44 03 21.283241760		11.64	11.23			~	3	0
51	2MASS J07175223+1324479	RG*	07 17 52.2300162504	+13 24 47.864798172		12.86	11.36	11.40		G9	9	0
52	EM* StHA 62	PN	07 20 01.5463247976	+18 17 25.906004808		12.741	12.802	12.836	12.74	B0.5I	23	0
53	DO 31422	LP?	07 35 51.4854533064	+83 49 16.406343408		12.37	11.21			M3e:	4	0
54	2MASS J07580587-0743554	LP*	07 58 05.8756014120	-07 43 55.575291900			13.5			~	6	0
55	EM* StHA 64	Em*	08 02 37.8607437840	+42 05 15.812958984			13.5			K4	3	0
56	BD+13 1840	Em*	08 07 40.1599072272	+12 37 09.166020312		9.79	9.29			F8	4	0
57	BD+27 1547	Em*	08 09 15.8094377712	+26 54 09.686510496		11.16	10.06			K2	3	0
58	EM* StHA 67	Em*	08 19 09.4817957448	+68 42 42.483500856		13.41	12.01			Ke	7	0
59	EM* StHA 68	Em*	08 27 14.5436481576	+47 17 35.800069776		12.64	11.19			~	4	0
60	EM* StHA 69	Mi*	08 35 07.9384711272	-09 44 00.816869760			11.7	12.23		M5/6	11	0
61	EM* StHA 71	Em*	08 42 43.3410853536	+40 50 22.552962792			13.5			G1	3	0
62	EM* StHA 73	Em*	08 54 42.1490569680	+09 11 52.252628064			13.5			~	2	0
63	EM* StHA 72	Em*	08 55 46.9038041760	+51 12 22.031009136			13.5			G2	4	0
64	EM* StHA 75	Em*	09 08 02.9535574224	+12 15 45.641771208			12.5			A7	2	0
65	EM* StHA 77	Em*	09 35 39.3384615888	+41 03 13.453534728			13.5			G2	2	0
66	V* FO Cam	LP?	09 45 00.0774083160	+85 14 40.185815280		11.81	10.07			M2	12	0
67	EM* StHA 79	Em*	10 01 20.04	+10 04 50.2			13.5			F7	2	0
68	EM* StHA 80	Em*	10 08 07.2630471336	+52 41 15.295157448		13.16	11.88			K0	2	0
69	EM* StHA 81	Em*	10 18 53.7065494848	+11 02 40.802056044			13.0			G2	2	0
70	EM* StHA 82	Em*	11 11 57.5809931160	+33 31 26.470139736			13.5			G6	3	0
71	EM* StHA 83	Em*	11 28 45.0054659544	-15 28 16.371963120			13.5			K4	3	0
72	HD 102083	Em*	11 44 59.1660601128	+03 04 16.923439164		8.88	8.58			A8/9V	22	0
73	NGC 4051	Sy1	12 03 09.6101337312	+44 31 52.682601288		11.08	12.92	9.94		~	2143	1
74	NGC 4194	AGN	12 14 09.615	+54 31 35.93		13.79	13.30			~	442	2
75	EM* StHA 87	Em*	12 19 43.8258937272	-10 24 23.911887852		13.41	12.97			G6	3	0
76	EM* StHA 88	Em*	12 21 51.0651051984	+06 05 20.702544684			13.593	13.188		M5	6	0
77	EM* StHA 89	Em*	12 23 03.3848044560	+47 10 56.163886752			12.5			F7	3	0
78	EM* StHA 90	Em*	12 26 44.5438369536	+47 14 23.316100800		12.66	11.64			K2V	5	0
79	EM* StHA 91	Em*	12 32 18.2979403924	+24 10 26.552133811			13.5			G6	4	0
80	EM* StHA 92	Em*	12 33 12.4810092096	-20 55 53.351762376			13.5			K0	3	0
81	TYC 3461-596-1	SB*	12 55 07.2112417680	+51 40 11.502163560		12.87	12.31			A7	4	0
82	EM* StHA 94	Em*	12 58 09.8249029248	-18 01 54.529950468		12.654	12.054			~	7	0
83	BD+49 2199	Em*	13 12 59.3160447984	+48 25 34.612357548		11.48	10.38			K2	4	0
84	EM* StHA 97	Em*	13 21 53.9773190328	+62 34 41.141995284		12.36	11.84			~	3	0
85	EM* StHA 96	Em*	13 22 56.8995909840	+22 41 19.207248000			12.1			G6	3	0
86	EM* StHA 99	Em*	13 43 23.7337469184	+29 34 31.607134212			12.5			G2	4	0
87	EM* StHA 100	Em*	14 01 35.2241715288	+49 44 49.010147880			14.2			~	4	0
88	EM* StHA 101	Em*	14 03 44.5577700408	+43 04 38.370970200			13.5			~	3	0
89	EM* StHA 104	LP?	14 23 41.1319227072	-00 44 57.255605592			13.5			M3	6	0
90	EM* StHA 105	Em*	14 26 12.7924471440	+14 43 32.183188716			13.5			~	2	0
91	EM* StHA 106	Em*	14 26 34.3323484896	+15 32 15.865440468		13.18	12.14			~	5	0
92	HD 127287	Em*	14 30 13.0532797848	+14 40 28.681212180		9.72	9.35			G5	12	0
93	BD+13 2833	HB*	14 44 01.7523619584	+12 43 41.064084696		10.87	9.86			G0	8	0
94	EM* StHA 109	Em*	14 52 15.7586128056	+51 20 32.435331504			13.0			F7	3	0
95	EM* StHA 110	Em*	14 56 31.2720976464	-20 35 32.128296648		12.40	12.23			G2	3	0
96	HD 133004	*	15 01 49.2441069408	+15 55 33.376342656		11.07	10.49			G	5	0
97	EM* StHA 113	Em*	15 20 17.2712621808	+50 49 27.974722728			13.5			~	3	0
98	BD+60 1616	Em*	15 32 50.9878214832	+59 45 06.417592596		10.31	9.81			~	2	0
99	BD+14 2953	Em*	15 52 19.7287576800	+14 15 19.735185420		11.51	10.26			M0	4	0
100	EM* StHA 117	Em*	15 56 35.0335986264	-09 03 50.808592944			12.5			M3	2	0
101	HD 143006	Or*	15 58 36.9126279888	-22 57 15.220559196		10.92	10.14		8.70	G5IVe	243	0
102	IRAS F15559-0718	LP*	15 58 39.0160610880	-07 26 59.160192792		13.990	12.330			M3	6	0
103	EM* StHA 120	Em*	16 00 38.9758951440	+49 47 39.208765380			13.5			~	3	0
104	EM* StHA 121	Em*	16 02 25.3732188912	+49 36 21.772971612		12.66	12.34			~	3	0
105	2MASS J16052157-1821412	TT*	16 05 21.5888026728	-18 21 41.442439572			13.5			K4.5e	22	0
106	EM* StHA 124	Y*O	16 13 01.3012235568	-24 06 54.764051544		14.00	12.66	12.44		M0	8	0
107	2MASS J16185382-2053182	TT*	16 18 53.8364503992	-20 53 18.185645256			13.5			M0:	7	0
108	Haro 1-4	Or*	16 25 10.508136	-23 19 14.78820				13.15		K4e	73	0
109	BD+79 499	Em*	16 25 23.8656421920	+79 15 52.966844712		9.28	9.36			B5	6	0
110	DoAr 24	TT*	16 26 17.0743951968	-24 20 21.594730920		16.06	14.21	14.02	11.57	K7.5V	108	1
111	ASAS J162708-2339.2	TT*	16 27 09.2769428664	-23 39 05.717808432			13.138		10.816	K4IVe	5	0
112	EM* SR 13	Or*	16 28 45.2768168328	-24 28 18.905579112			13.60	12.40	10.9	M2e	132	0
113	EM* StHA 131	Em*	16 30 16.7479581408	+48 11 41.939819304		12.42	11.97			~	2	0
114	EM* StHA 132	Em*	16 32 19.5421949256	+13 30 39.824496396		13.08	12.44			~	3	0
115	HD 150143	Em*	16 37 50.9212897128	+31 05 05.821816560		9.62	9.44			F0	10	0
116	V* V1008 Oph	Mi*	16 44 41.8841002296	-14 41 18.695671980			11.88			M1e	13	0
117	Hen 3-1258	Or*	16 48 45.6326070624	-14 16 35.849828856		14.94	13.34	12.84		K6	119	0
118	HD 152239	Em*	16 51 49.0707208632	+11 26 56.328224208		10.14	9.84			A2	4	0
119	EM* StHA 140	Em*	16 56 40.1092686720	+13 15 29.279201868			13.5			~	3	0
120	V* V854 Oph	Mi?	16 59 11.9501334504	-13 30 37.977875136			14.10			~	7	0
121	EM* StHA 143	Em*	17 14 25.3770344592	+31 35 00.563395056		11.66	12.02			Be	7	0
122	V* V836 Oph	Mi*	17 43 11.3687299560	-10 00 14.494034088						M4	9	0
123	BD+23 3183	Em*	17 47 03.2744329776	+23 19 45.354097632		10.257	10.191	10.117		A1-A2II/III	16	0
124	EM* StHA 146	LP*	17 59 39.8164266600	+04 59 51.516820896			13.7	11.780		M4e	6	1
125	HD 341617	pA*	18 08 20.0857525920	+24 10 43.321447236		11.41	11.39			B1IIIe	86	0
126	EM* StHA 148	Em*	18 11 21.0641606352	+44 13 22.239648120			13.5			~	3	0
127	EM* StHA 149	LP*	18 18 55.8709395456	+27 26 27.731634108		13.74	11.98	11.44		M2	13	0
128	BD+49 2768	Em*	18 19 21.2323917528	+49 25 16.958338140		11.07	11.19			Be	6	0
129	EM* StHA 151	LP*	18 29 16.0619862984	+30 50 57.320127096				12.08		M0e	3	0
130	EM* StHA 153	Em*	18 33 19.0611339624	+75 23 45.111914520			13.5			~	3	0
131	EM* StHA 152	Em*	18 41 03.9312942312	+15 23 50.406579852	11.29	11.5	11.3			B3IIIne	11	0
132	2MASS J18432793+1930053	Sy*	18 43 27.9296968728	+19 30 05.459719680			13.5			M2	4	0
133	V* V578 Lyr	Mi*	18 49 43.3847639040	+40 57 49.614236496						M7e:	9	0
134	EM* StHA 156	Em*	18 55 19.2814557456	-23 00 39.675290364			13.5			~	3	0
135	IRAS F18569+3332	LP*	18 58 44.7542105400	+33 36 15.830114256			13.5			M2	2	0
136	EM* StHA 160	Em*	19 10 56.4140235720	-16 50 13.465120524		11.68	11.87			Be	8	0
137	EM* StHA 161	pA*	19 21 55.2903649824	+35 02 55.026546000	10.74	11.49	11.54	11.34		Fe	30	0
138	EM* StHA 162	LP*	19 26 13.3162081368	+36 46 56.178293268			13.539		8.779	M2e	9	0
139	2MASS J19291652-2240402	LP*	19 29 16.5249609744	-22 40 40.177514028			13.5			M1e:	3	0
140	IRAS 19296+3425	LP*	19 31 26.9495223192	+34 31 28.703992620			13.5		9.948	M1	6	0
141	EM* StHA 166	Er*	19 34 46.8033214440	+42 26 08.276153352			11.760		11.643	B2.5Ve	23	0
142	EM* StHA 170	Em*	19 58 00.0548792664	-03 08 28.070467008			13.5			~	2	0
143	EM* StHA 171	Em*	20 01 53.5923513312	-02 26 57.615535896			13.5			~	2	0
144	HD 189812	Em*	20 02 00.9064712544	-03 51 53.591710284		10.06	9.55			A1IV	6	0
145	StM 512	LP*	20 07 58.2156812928	-09 06 02.996690364		13.5	13.5			M7:e	10	0
146	IRAS F20097+0104	LP*	20 12 16.2791688912	+01 13 51.684526776			13.5			M5:	2	0
147	ATO J305.6761-21.1318	CV*	20 22 42.2615505336	-21 07 54.674066388			12.5			~	14	0
148	StM 519	Mi*	20 27 51.9385231392	-01 49 23.881133640			13.5	12.78		M7:	8	0
149	V* LT Del	Sy*	20 35 57.2354539608	+20 11 27.506897808						G6III	102	1
150	EM* StHA 180	Em*	20 39 20.6054978304	-05 17 16.327891572			13.5			~	10	0
151	EM* StHA 182	**	20 43 41.142360	-24 33 53.18208				12.379	10.10	M4.1V+M3.7V	38	0
152	HD 347471	*	20 49 03.6624821160	+23 42 45.251594640		11.11	11.01			A7	6	0
153	EM* StHA 185	LP?	20 52 14.3359692432	+20 11 09.541508460			13.5			Me	3	0
154	EM* StHA 186	Em*	20 59 25.4945839008	-02 48 44.561756052		13.566	12.011			M4	6	0
155	EM* StHA 188	Em*	21 14 23.8602406440	-03 40 28.995831588			13.5			~	3	0
156	BD+33 4290	Em*	21 32 43.9870093368	+34 21 19.332673632		9.542	9.31			B8	7	0
157	EM* StHA 190	Sy*	21 41 44.8876442736	+02 43 54.414342804		11.13	10.22			G5e	47	0
158	V* LS Peg	CV*	21 51 57.9373184400	+14 06 53.271115344		11.886	11.800	12.4		~	88	0
159	EM* StHA 195	LP?	22 00 11.5361088432	+75 12 28.198368432			13.0			M2	2	0
160	UGC 12138	Sy1	22 40 17.0609184456	+08 03 13.539839976		15.30	14.45			~	172	0
161	V* BP Psc	pA?	23 22 24.6974756088	-02 13 41.378919456		13.32	11.85			G9IIIe	46	0
162	EM* StHA 203	Em*	23 34 45.7939935816	+30 19 55.903270944			13.0			~	3	0
163	HD 223167	Em*	23 47 08.4790293096	+15 39 03.279400632		8.57	8.65			A0	10	0

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