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 Hα 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 Hα emission stars of Stephenson (1986ApJ...300..779S). Out of six known T Tauri stars observed, five showed Hα in emission and in one (StHa 40), Hα 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 Hα and Hβ 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 Hα 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

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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 - 2024 		#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: 441 0
10 V* BU Ari Or* 02 56 07.9958860128 +20 03 24.205352688   15.14 14.15 14.50   M1:IIIe 56 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 14 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 9 0
19 EM* LkCa 4 Or* 04 16 28.1067298272 +28 07 35.731363080   13.96 12.78 11.825   K7:Ve 187 0
20 V* FT Tau Or* 04 23 39.1888788312 +24 56 14.250818940   16.15 14.93 14.70   M2.8 143 0
21 V* IP Tau Or* 04 24 57.0824018640 +27 11 56.539953888   14.50   12.46   M0:Ve 232 0
22 V* IQ Tau Or* 04 29 51.5569574040 +26 06 44.859710736 15.43   13.80 12.28 11.11 M0.5 240 0
23 V* GI Tau Or* 04 33 34.0609697160 +24 21 17.068989852 14.34   13.70 12.15 11.06 K5Ve 286 1
24 V* GK Tau Or* 04 33 34.5630097872 +24 21 05.855136732 15.50   13.00 12.02 10.62 K7:Ve 308 0
25 V* HN Tau Or* 04 33 39.3629421552 +17 51 52.289234280   14.76 13.40 13.05   K5e 255 0
26 EM* StHA 32 Sy* 04 37 45.6311945568 -01 19 11.895512556     13.5     C1,1e_CH5 34 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 34 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 20 0
38 BD-05 1298 Em* 05 34 15.1985809392 -05 11 49.334146476   11.2 10.698   10.001 F7 33 0
39 HD 290667 SB* 05 34 24.2386871304 -00 55 19.290966492   11.0 10.7     G0 10 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 15 0
42 2MASS J05354326-0034367 Y*O 05 35 43.2743181024 -00 34 36.738766596     12.3     K4 10 0
43 EM* StHA 49 Em* 05 36 20.275 -06 45 06.78     15     ~ 26 0
44 HD 37903 Em* 05 41 38.3891026008 -02 15 32.479650720 7.32 7.94 7.83 7.64 7.52 B3IV 363 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   ~ 20 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 5 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 10 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: 5 0
54 2MASS J07580587-0743554 LP* 07 58 05.8756014120 -07 43 55.575291900     13.5     ~ 8 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     ~ 5 0
60 EM* StHA 69 Mi* 08 35 07.9384711272 -09 44 00.816869760     11.7 12.23   M5/6 13 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   ~ 2164 1
74 NGC 4194 AGN 12 14 09.615 +54 31 35.93   13.79 13.30     ~ 448 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 6 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 7 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 9 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 255 0
102 IRAS F15559-0718 LP* 15 58 39.0160610880 -07 26 59.160192792   13.990 12.330     M3 7 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 23 0
106 EM* StHA 124 Y*O 16 13 01.3012235568 -24 06 54.764051544   14.00 12.66 12.44   M0 9 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 112 1
111 ASAS J162708-2339.2 TT* 16 27 09.2769428664 -23 39 05.717808432     13.138   10.816 K4IVe 6 0
112 EM* SR 13 Or* 16 28 45.2768168328 -24 28 18.905579112     13.60 12.40 10.9 M2e 133 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 15 0
117 Hen 3-1258 Or* 16 48 45.6326070624 -14 16 35.849828856   14.94 13.34 12.84   K6 120 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 8 0
122 V* V836 Oph Mi* 17 43 11.3687299560 -10 00 14.494034088           M4 11 0
123 BD+23 3183 Em* 17 47 03.2744329776 +23 19 45.354097632   10.257 10.191 10.117   A1-A2II/III 17 0
124 EM* StHA 146 LP* 17 59 39.8164266600 +04 59 51.516820896     13.7 11.780   M4e 7 1
125 HD 341617 pA* 18 08 20.0857525920 +24 10 43.321447236   11.41 11.39     B1IIIe 87 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 15 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 4 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 EM* StHA 154 Sy* 18 43 27.9296968728 +19 30 05.459719680     13.5 12.096   M2e 6 0
133 V* V578 Lyr Mi* 18 49 43.3847639040 +40 57 49.614236496           M7e: 10 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 3 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 31 0
138 EM* StHA 162 LP* 19 26 13.3162081368 +36 46 56.178293268     13.539   8.779 M2e 10 0
139 2MASS J19291652-2240402 LP* 19 29 16.5249609744 -22 40 40.177514028     13.5     M1e: 4 0
140 IRAS 19296+3425 LP* 19 31 26.9495223192 +34 31 28.703992620     13.5   9.948 M1 7 0
141 EM* StHA 166 Er* 19 34 46.8033214440 +42 26 08.276153352     11.760   11.643 B2.5Ve 24 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 11 0
146 IRAS F20097+0104 LP* 20 12 16.2791688912 +01 13 51.684526776     13.5     M5: 3 0
147 ATO J305.6761-21.1318 CV* 20 22 42.2615505336 -21 07 54.674066388     12.5     ~ 17 0
148 StM 519 Mi* 20 27 51.9385231392 -01 49 23.881133640     13.5 12.78   M7: 9 0
149 V* LT Del Sy* 20 35 57.2354539608 +20 11 27.506897808           G6III 106 1
150 EM* StHA 180 Em* 20 39 20.6054978304 -05 17 16.327891572     13.5     ~ 12 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 4 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 48 0
158 V* LS Peg CV* 21 51 57.9373184400 +14 06 53.271115344   11.886 11.800 12.4   ~ 90 0
159 EM* StHA 195 LP? 22 00 11.5361088432 +75 12 28.198368432     13.0     M2 3 0
160 UGC 12138 Sy1 22 40 17.0609184456 +08 03 13.539839976   15.30 14.45     ~ 182 0
161 V* BP Psc pA? 23 22 24.6974756088 -02 13 41.378919456   13.32 11.85     G9IIIe 48 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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