2002AJ....124..989G

Query : 2002AJ....124..989G

2002AJ....124..989G - Astron. J., 124, 989-1000 (2002/August-0)

A spectroscopic search for λ Bootis and other peculiar A-type stars in intermediate-age open clusters.

GRAY R.O. and CORBALLY C.J.

Abstract (from CDS):

As part of our continuing search for peculiar A-type stars, especially λ Bootis stars, in open clusters of all ages, we have obtained classification spectra of 130 late B, A, and early F-type stars in 12 intermediate-age open clusters, including NGC 1039, 2281, 2548, 6633, 7039, 7063, 7092, and 7209, IC 4665, IC 4756, Stock 2, and Praesepe. The spectra were obtained with resolutions of 1.8 and 3.6 Å on the 0.8 m telescope of Appalachian State University and were classified on the MK system. Numerous classical Ap and Am stars were found among the 130, including two new Ap stars in NGC 7092. In addition, three emission-line stars and two candidate λ Bootis stars were found. Neither of these λ Bootis candidates turned out to be members of their respective clusters. Combined with 184 stars previously classified in 10 other intermediate-age open clusters, also devoid of λ Bootis stars, a statistically significant null result is obtained. We discuss the implications of this null result for our understanding of the λ Bootis mechanism.

Abstract Copyright: ∼

Journal keyword(s): Stars: Atmospheres - Stars: Evolution - Stars: Fundamental Parameters - Stars: Individual: Constellation Name: λ Bootis - Stars: Statistics

Simbad objects: 147

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Number of rows : 147
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 HD 13088 * 02 10 05.5231051752 +59 08 59.664890328   8.32 8.14     A1V 18 0
2 HD 13208 * 02 11 08.2836724008 +59 14 28.771891764   9.68 9.47     A2V 17 0
3 BD+59 428 * 02 11 12.6583203960 +60 04 23.842833852   10.42 10.20     A0V 24 0
4 BD+59 430 * 02 12 17.9494483488 +60 05 05.562317040   10.60 10.23     A2V 9 0
5 HD 13379 * 02 12 53.5690025208 +59 25 40.922231340   9.18 8.84     A0V 26 0
6 HD 13428 * 02 13 16.2572627520 +59 19 32.823050124   10.14 9.87     A2V 24 0
7 BD+59 433 * 02 13 25.9157325456 +59 49 00.039838800   10.44 9.95     A1V 12 0
8 HD 13436 * 02 13 30.0402136032 +59 57 19.868937048   8.72 8.41     F2 16 0
9 HD 13450 * 02 13 33.2724270360 +60 07 23.802948948   9.64 9.25     A0V 9 0
10 HD 13464 * 02 13 45.9640821864 +59 37 07.343836680   9.98 9.40     A0V 26 0
11 BD+59 436 * 02 13 48.7738161552 +59 58 32.750280444 9.15 10.71 9.92     B5: 14 0
12 BD+59 437 * 02 13 52.1111305896 +59 45 03.444877116   10.82 10.32     A0V 23 0
13 HD 13505 * 02 13 53.3350978416 +58 44 28.254141060   8.87 8.59     F0IV 15 0
14 HD 13518 * 02 14 00.8312049336 +59 24 05.574151368   8.91 8.56     A1V 31 0
15 BD+58 405 * 02 14 05.8953237048 +59 39 47.340330192   10.43 10.01     A3 15 0
16 HD 236955 * 02 14 18.0483861888 +59 54 10.950220836   9.90 9.41     A1V 25 0
17 HD 13542 * 02 14 19.4151892656 +59 06 53.454974904   10.61 10.16     A1 23 0
18 HD 13554 * 02 14 23.9846119584 +60 05 15.449872272   9.54 9.19     A1V 12 0
19 HD 13580 * 02 14 38.0225192208 +59 01 34.642400520   10.55 10.15     A1 9 0
20 HD 13591 * 02 14 42.2109376344 +59 23 40.925596920   9.05 8.65     A1IV 38 0
21 HD 13606 * 02 14 52.6494405240 +59 38 36.954992760   9.43 9.02     A0V 31 0
22 HD 13632 * 02 15 07.6563307536 +59 36 04.097728908   10.03 9.54     A0V 21 0
23 HD 13656 * 02 15 09.4741073472 +59 06 29.106995364   9.71 9.29     A2 26 0
24 HD 13676 * 02 15 28.5460192944 +59 56 03.991193232   9.63 9.11     A2V 14 0
25 HD 13689 PM* 02 15 32.1091271328 +59 14 24.739503144   8.72 8.39     A7p 13 0
26 Cl Stock 2 OpC 02 15 47.8 +59 33 12           ~ 155 0
27 HD 16534 * 02 40 22.2634337784 +42 29 08.696608512   9.20 9.19     A0 21 0
28 HD 16655 * 02 41 31.9238999856 +42 35 39.124999032   8.53 8.50     B9V 30 0
29 HD 16693 * 02 41 56.7425010576 +42 47 23.323513164   8.52 8.52     B9IIInpHgMn 52 0
30 BD+42 590 * 02 42 01.7690507112 +42 44 53.987413308   9.85 9.82     A2 22 0
31 BD+41 516 * 02 42 03.9374057390 +42 32 49.494549315   9.98 9.92     A2.5V 25 0
32 NGC 1039 OpC 02 42 09.1 +42 44 02           ~ 467 0
33 BD+42 596 * 02 42 13.4611629768 +42 46 40.638521784   8.86 8.80     A0IV 31 0
34 BD+42 612 * 02 43 25.6296748491 +42 46 22.630449216   9.64 9.58     A0V 26 0
35 HD 16856 * 02 43 32.2236548304 +43 12 27.619700040   9.37 9.22     A0 9 0
36 * pi.01 Ori PM* 04 54 53.7280989194 +10 09 03.003446941   4.723 4.648     A0Va_lB 268 0
37 HD 37411 Or* 05 38 14.5072831944 -05 25 13.301118588 10.03 9.91 9.79 9.60 9.45 hA3VakA0mA0(eb)_lB 100 0
38 BD+41 1506 * 06 47 51.0220769328 +40 58 35.755333248   10.37 10.10     ~ 8 0
39 BD+41 1507 * 06 47 53.9973300696 +41 09 12.058100604   10.59 10.33     ~ 11 0
40 BD+41 1508 * 06 47 58.8670556167 +41 10 37.653348878   10.39 10.21     ~ 25 0
41 BD+41 1512 * 06 48 17.3610155160 +41 04 58.790031708   9.47 9.29     A2 18 0
42 NGC 2281 OpC 06 48 19.7 +41 02 35   6.05 5.4     ~ 182 0
43 HD 49010 BS? 06 48 20.8453528272 +41 05 02.880630996   8.91 8.84     ~ 26 0
44 BD+41 1518 * 06 48 32.0767604829 +41 06 30.853225659 11.08 10.82 10.92 10.67   ~ 14 0
45 BD+41 1519 * 06 48 35.4547277496 +41 05 26.418577560   10.41 10.3     ~ 15 0
46 BD+41 1520 * 06 48 37.5438404280 +41 06 21.079033956   10.19 10.15     ~ 17 0
47 HD 49098 * 06 48 40.8500255016 +41 03 59.387783796   8.80 8.59     A3III 29 0
48 NGC 2281 95 * 06 49 04.5119891064 +41 00 06.985990260   10.81 10.6     ~ 8 0
49 HD 49363 * 06 49 59.2450955976 +40 59 51.026125416   8.87 8.83     A1.5IV- 22 0
50 HD 68646 * 08 13 08.5526065294 -05 38 35.736640695   9.262 9.204     A1IV 34 0
51 HD 68669 * 08 13 18.0283022376 -05 38 26.414222820   8.76 8.71     A0IV/V 34 0
52 NGC 2548 OpC 08 13 34.0 -05 43 11           ~ 227 0
53 HD 68779 * 08 13 44.2254549360 -05 48 48.903218244   9.198 9.133     A1 28 0
54 HD 68778 * 08 13 47.7159287688 -05 37 25.917759228   8.93 8.88     A1IV 22 0
55 HD 68794 * 08 13 52.9887554928 -05 42 46.585681416   9.573 9.468     A0V 21 0
56 HD 68878 * 08 14 15.5011797264 -05 43 15.813929460   9.223 9.119     A2/3V 20 0
57 V* CY Cnc dS* 08 38 37.8616098480 +19 59 23.094950100   8.34 8.14     F0V 104 0
58 HD 73430 V* 08 39 03.5858900448 +19 59 59.095465836   8.51 8.33     A9V 84 0
59 V* BS Cnc dS* 08 39 09.0975243288 +19 35 32.619758244   8.78 8.59     A9V 130 0
60 NGC 2632 OpC 08 39 58.4 +19 36 33           ~ 1733 0
61 HD 73872 dS* 08 41 13.7739225288 +19 55 19.183268568   8.55 8.34     A5V 83 0
62 * rho Vir dS* 12 41 53.0569475088 +10 14 08.252569320 5.00 4.97 4.88 4.80 4.78 A0Va_lB 232 0
63 * lam Boo dS* 14 16 23.0184083839 +46 05 17.895459693 4.31 4.26 4.18 4.16 4.13 A0Va_lB 362 0
64 HD 161165 SB* 17 43 49.9632353544 +05 25 13.778172480   8.79 8.73     B8 62 0
65 HD 161184 ** 17 43 51.657 +05 50 42.10   9.19 9.20 8.76   A0 43 0
66 V* V2314 Oph dS* 17 44 03.6257455416 +06 03 42.497438940   7.76 7.43     A2 34 0
67 HD 161261 Be* 17 44 15.7358081208 +05 42 51.490343736 8.19 8.32 8.26     kA0hB8V_sh 94 0
68 BD+06 3516 * 17 44 42.0087742392 +06 14 06.285140448   10.81 10.54     A1 9 0
69 HD 161370 * 17 45 00.8836708272 +05 31 22.438712748   9.71 9.42     A0 63 0
70 HD 161426 * 17 45 17.2805128272 +05 40 03.566697564   9.25 9.07     A0 41 0
71 HD 161445 * 17 45 23.1083753904 +05 33 45.494028612   10.23 10.16     ~ 14 0
72 HD 161480 SB* 17 45 33.6534906888 +05 42 56.493010692   7.71 7.70     B7V 96 0
73 HD 161481 SB* 17 45 34.8432456048 +05 25 35.457619944   9.33 9.09     A0 46 0
74 HD 161482 * 17 45 39.5413684416 +05 11 53.057319180   10.20 9.82     A2 32 0
75 HD 161572 * 17 45 57.0657876600 +05 41 39.963638724   7.59 7.59     B5V 75 0
76 HD 161552 * 17 46 02.0987347896 +04 40 19.005052836   10.01 9.46     F2V 13 0
77 IC 4665 OpC 17 46 04.0 +05 36 54           ~ 407 0
78 HD 161573 SB* 17 46 07.3255120272 +05 31 48.717378912   6.824 6.848     B4 84 0
79 V* V2320 Oph El* 17 46 10.9226696544 +05 39 29.566582812   7.37 7.36     B9 82 0
80 BD+05 3486 * 17 46 23.2402685962 +05 47 36.045037062   10.72 10.55     A2 40 0
81 V* V2323 Oph SB* 17 46 36.4220060880 +06 07 14.243711268   7.74 7.76     B7III 83 0
82 HD 161677 * 17 46 41.0414298072 +05 46 27.384818520   7.113 7.125     B8 82 0
83 V* V2324 Oph El* 17 46 46.7050272128 +05 33 53.718933313   8.35 8.27     B8VpHgMn 70 0
84 HD 161734 Be* 17 46 57.7666195704 +05 25 32.476691748   8.96 8.87     B8V:e 61 0
85 HD 161733 Ro* 17 47 02.1718300152 +05 41 30.598990944   8.028 8.002     B6V 80 0
86 AG+05 2335 * 17 47 02.9895021849 +05 41 55.045232218   10.34 10.06     A2V 35 0
87 HD 161786 * 17 47 21.4890145577 +05 45 34.295670002   10.08 9.95     A0 42 0
88 HD 161834 * 17 47 39.1520102328 +05 06 58.806214524   10.45 10.24     A2 10 0
89 HD 161940 SB* 17 48 10.2371561472 +06 16 17.464224972   9.38 9.26     A0 48 0
90 V* V2327 Oph SB* 17 48 43.3767631200 +05 42 04.551403932   7.497 7.508     B9 62 0
91 HD 162162 ** 17 49 22.116144 +05 34 01.42932       9.310   A8IVpkA3EuSr 13 0
92 HD 162177 SB* 17 49 32.9020964640 +05 23 23.452502352   9.01 8.67     ~ 16 0
93 HD 169842 * 18 26 22.2866497368 +06 51 25.638603336   9.33 9.14     A5VkA1pSrEuCr 49 0
94 HD 169959 ** 18 26 52.890288 +06 25 24.01428   8.78 8.62 8.50   A0III 49 0
95 BD+06 3765 * 18 27 00.4309247640 +06 25 02.042574132   9.650 9.421 9.356   A2V 29 0
96 HD 170079 * 18 27 24.0484295952 +06 08 34.675891440   9.31 9.05     A0 15 0
97 HD 170095 * 18 27 26.3835143664 +06 14 26.949091020   9.73 9.50     A0 28 0
98 NGC 6633 OpC 18 27 30.2 +06 38 21           ~ 423 0
99 HD 170158 * 18 27 47.6901942264 +06 27 21.220496388   9.37 9.13     A2 30 0
100 HD 171586 a2* 18 35 36.4929240936 +04 56 09.562670484 6.52 6.53 6.46     A0VpSrSi 84 0
101 BD+05 3804 * 18 35 37.6780502664 +05 08 03.866696952 9.71 9.81 9.50     A2 7 0
102 HD 171931 * 18 37 15.7313771880 +05 19 04.343231028 8.96 9.34 9.19     ~ 22 0
103 BD+05 3834 * 18 37 24.1173206184 +05 41 19.868018676 9.82 10.00 9.53 9.2   A0V 32 0
104 HD 172012 * 18 37 39.2470892784 +05 31 54.844416084 9.08 9.34 9.19     A0III+ 26 0
105 BD+05 3844 * 18 37 40.3865283336 +05 29 44.589310008 10.30 10.45 9.98 9.8   F2V 15 0
106 BD+05 3851 * 18 38 08.1275109648 +05 31 51.335043204 10.70 10.84 10.40     A2 21 0
107 BD+05 3854 * 18 38 12.9994939320 +05 21 35.435137716 10.67 10.64 10.31     A1 17 0
108 BD+05 3861 * 18 38 25.3248913632 +05 53 47.830757856 9.89 9.96 9.67     A2 5 0
109 BD+04 3822 * 18 38 37.0237238880 +05 01 35.351897484 10.14 10.28 9.90     A2 20 0
110 IC 4756 OpC 18 38 39.0 +05 26 14           ~ 274 0
111 BD+05 3867 * 18 38 40.8619037520 +05 42 37.319356944 10.08 10.12 9.82     A4 8 0
112 BD+05 3869 * 18 38 43.7448704928 +05 17 55.911292620 9.75 9.87 9.53     A5 24 0
113 HD 172248 * 18 39 03.4705552560 +05 27 31.158524232 8.55 9.04 8.97     ~ 19 0
114 HD 172271 a2* 18 39 03.5660965344 +05 35 20.299185456 8.94 9.12 9.07     ~ 25 0
115 BD+05 3900 * 18 40 08.1893379024 +05 22 50.488087656 9.86 10.03 9.64     A2 13 0
116 HD 201174 * 21 06 22.5977527344 +45 16 13.863438336   8.83 8.77     A0p 46 0
117 NGC 7039 OpC 21 10 35.0 +45 36 09   8.06 7.6     ~ 73 0
118 HD 201870 * 21 10 50.1488407752 +46 05 59.573865948   8.84 8.52     Am 24 0
119 HD 203921 * 21 24 13.8484492344 +36 25 40.708939260   8.86 8.89     B9IV 27 0
120 BD+35 4511 * 21 24 20.5233331617 +36 30 26.372182361   9.60 9.58     A0V 17 0
121 BD+35 4512 * 21 24 24.1298368768 +36 33 01.128414182   10.29 10.24     A0V 20 0
122 BD+35 4513 * 21 24 29.2244211672 +36 31 31.072912421   10.441 10.40     ~ 7 0
123 NGC 7063 OpC 21 24 30.2 +36 29 45   7.32 7.0     ~ 99 0
124 GSC 02715-03329 * 21 24 43.04 +36 30 30.2           ~ 1 0
125 HD 204917 V* 21 30 18.9359936496 +48 23 27.041050644   7.34 7.38     A0V 66 0
126 BD+47 3433 * 21 30 33.3125133312 +48 17 48.436354392   9.18 9.07     A2V 42 0
127 BD+47 3438 * 21 30 44.0529265632 +48 19 54.870440268   9.31 9.15     A3:V 42 0
128 NGC 7092 OpC 21 31 04.0 +48 17 47           ~ 245 0
129 HD 205073 ** 21 31 23.1745629 +48 21 23.366871   7.89 7.85     A1p 79 0
130 HD 205085 ** 21 31 30.5254559448 +48 16 41.438728236   8.03 7.97     A3V 55 0
131 HD 205116 SB* 21 31 42.3843145968 +48 35 04.624183104   6.792 6.827     A0III: 84 0
132 HD 205117 SB* 21 31 44.6502581400 +48 29 03.673932900   7.65 7.65     A1p 85 0
133 BD+47 3452 SB* 21 31 49.5776534256 +48 28 54.579074772   9.36 9.30 9.14   A1m+A5: 56 1
134 BD+47 3453 * 21 31 54.4543967256 +48 20 21.956597232   9.72 9.57     A3V 35 0
135 BD+47 3454 * 21 32 03.3050972448 +48 20 03.311207772   9.04 8.97     A2V 49 0
136 HD 205172 * 21 32 04.5752767464 +48 34 01.639230312   8.10 8.09     A0 18 0
137 HD 205171 * 21 32 06.7407549024 +48 42 59.202807300   8.53 8.52     ~ 41 0
138 BD+47 3456 * 21 32 11.4647386128 +48 29 04.084095768   9.76 9.67     A1Vn 21 0
139 HD 205198 * 21 32 14.6572225536 +48 38 22.205080932   8.31 8.26     A0V 63 0
140 HD 205210 * 21 32 17.0711714832 +48 26 37.811040684 6.56 6.557 6.572     B9.5V 52 0
141 BD+47 3458 * 21 32 18.4932793848 +48 20 32.211043800   8.72 8.67     A1V 47 0
142 BD+47 3462 * 21 32 43.1552414688 +48 28 59.401237152   9.12 9.02     A3V 46 0
143 HD 205331 * 21 33 10.1106852720 +48 18 12.264702120 6.800 6.820 6.830     A1V 77 0
144 NGC 7209 OpC 22 04 50.7 +46 30 11   8.24 7.7     ~ 144 0
145 BD+45 3785 * 22 04 53.6592453960 +46 32 58.259875560   9.95 9.77     A0 17 0
146 BD+45 3795 * 22 05 25.3214390064 +46 24 49.822562304   10.38 10.21     A0IV 24 0
147 HD 218396 El* 23 07 28.7157209544 +21 08 03.310767492   6.21 5.953     F0+VkA5mA5 1285 0

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