2003A&A...412..447G


Query : 2003A&A...412..447G

2003A&A...412..447G - Astronomy and Astrophysics, volume 412, 447-464 (2003/12-3)

The heterogeneous class of λ Bootis stars.

GERBALDI M., FARAGGIANA R. and LAI O.

Abstract (from CDS):

We demonstrate that it is arduous to define the λ Boo stars as a class of objects exhibiting uniform abundance peculiarities which would be generated by a mechanism altering the structure of their atmospheric layers. We collected the stars classified as λ Boo up to now and discuss their properties, in particular the important percentage of confirmed binaries producing composite spectra (including our adaptive optics observations) and of misclassified objects. The unexplained RV variables (and thus suspected binaries), the known SB for which we lack information on the companion, the stars with an UV flux inconsistent with their classification, and the fast rotating stars for which no accurate abundance analysis can be performed, are also reviewed.

Abstract Copyright:

Journal keyword(s): stars: atmospheres - stars: chemically peculiar - stars: binaries: spectroscopic

VizieR on-line data: <Available at CDS (J/A+A/412/447): table4.dat table5.dat>

Simbad objects: 137

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Number of rows : 137
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 225218 ** 00 04 36.5845256345 +42 05 33.080174481 6.410 6.28 6.14 7.30   A3Vs 53 0
2 HD 3 * 00 05 09.7582686336 +45 13 44.510792196 6.840 6.770 6.710     A0Vn_lB 50 0
3 HD 319 PM* 00 07 46.8995868600 -22 30 30.805174800   6.055 5.923     A1VbmA2_lB 105 0
4 HD 2904 * 00 33 19.2656656224 +70 58 54.677413200 6.220 6.330 6.380     A0Vnn_lB 43 0
5 HD 4158 * 00 43 54.0507025992 -20 23 59.222823468   9.76 9.54     F2VkA1.5mA1.5_lB 38 0
6 HD 5789 * 01 00 03.5576514672 +44 42 47.691064620   6.01 6.05     B9.5Vnn_lB 58 0
7 HD 6173 * 01 03 29.8960694088 +50 32 15.681148332   8.65 8.52     A0IIIn 18 0
8 V* BS Tuc dS* 01 08 03.9681734664 -61 52 17.817500280   7.71 7.45     hF0mA1_lB 97 0
9 HD 7908 * 01 18 25.3734538512 -23 00 47.600538120   7.569 7.302     F0VmA3_lB 52 0
10 V* BD Phe dS* 01 50 54.4352128992 -50 12 22.092503544   6.080 5.929     F0VkA2mA2_lB 106 0
11 * gam02 Ari PM* 01 53 31.8129284424 +19 17 37.879979172   4.49 4.52     A2IVpSiSrCr 156 0
12 * gam01 Ari PM* 01 53 31.8192032943 +19 17 45.430793660   4.558 4.589 6.71   A0Vnp_lB 80 0
13 V* CV Phe dS* 02 12 47.0859332544 -44 29 20.456479752   8.11 7.83     F1VkA8mA8(_lB) 32 0
14 HD 15165 dS* 02 26 45.6478667280 +10 33 55.070566704   6.94 6.69     F0IV 92 0
15 HD 16955 * 02 43 51.2435867712 +25 38 18.050045172   6.46 6.39 7.45   A3V 40 0
16 HD 21335 ** 03 27 03.2348403240 +18 45 23.558435856   6.72 6.57     A3V 68 0
17 * 20 Eri a2* 03 36 17.4041095200 -17 28 01.472307996 4.61 5.10 5.23     B8/9III 175 0
18 HD 23258 * 03 44 28.2037966608 +20 55 43.448620908   6.100 6.074     A0Vp_lB 57 0
19 HD 23392 * 03 44 32.7248403456 -08 35 12.466693284   8.29 8.24     A0Va-_lB 29 0
20 HD 24472 * 03 52 49.7455748424 -22 16 34.602082932   7.40 7.10     A9V 40 0
21 HD 26801 * 04 18 11.0180496528 +61 54 45.248411952   7.72 7.72     B9 20 0
22 V* EX Eri dS* 04 46 25.7495143440 -28 05 14.805163104   6.347 6.173     A7VkA3mA3 119 0
23 * pi.02 Ori * 04 50 36.7224881321 +08 54 00.652210041 4.39 4.36 4.35 4.29 4.29 A1Vn 184 0
24 * pi.01 Ori PM* 04 54 53.7280989194 +10 09 03.003446941   4.723 4.648     A0Va_lB 258 0
25 * 16 Cam PM* 05 23 27.8426747304 +57 32 39.837146280 5.150 5.230 5.250   5.23 A0Vne 63 0
26 V* V1649 Ori dS* 05 23 31.0655908752 +05 19 23.111389848   6.455 6.334     hA3VamA1_lB 46 0
27 HD 290492 ** 05 31 18.76416 -00 29 24.1404   9.648 9.625 9.878   A0 24 0
28 HD 36726 * 05 33 51.7278163992 -00 04 36.342051096   8.91 8.82     hA5VkA0mA0_lB 40 1
29 HD 294253 HS* 05 36 41.7835166016 -03 30 12.476798712   9.675 9.637 9.974   A0VakB8.5mB9(_lB) 36 1
30 HD 36496 ** 05 37 16.0241407 +66 41 48.090148 6.550 6.500 6.290     A8Vn 56 0
31 HD 37411 Or* 05 38 14.5072831944 -05 25 13.301118588 10.03 9.91 9.79 9.60 9.45 hA3VakA0mA0(eb)_lB 90 0
32 V* V1790 Ori dS* 05 40 24.2915301336 -00 46 16.753504332   10.8 10.8     A0 32 0
33 HD 37886 * 05 41 32.0065124640 -02 58 26.602064364   8.956 8.979 9.67 9.51 B8III 32 0
34 * 131 Tau ** 05 47 13.1536316 +14 29 17.967416   5.785 5.721     A3Vn 104 0
35 HD 39421 * 05 52 07.7290666608 -09 02 30.844893552   6.045 5.960     A0V 59 0
36 * ksi Aur * 05 54 50.7669372792 +55 42 25.080150456   5.005 4.960     A2V 122 0
37 HD 41580 * 06 06 28.0434611568 +10 45 01.012449456   7.13 7.19     A0 30 0
38 * 53 Aur ** 06 38 23.0105318280 +28 59 03.615135864   5.761 5.744     B9Mn+F0m 136 0
39 HD 261904 Y*O 06 41 00.6874797312 +09 24 11.888973612   10.38 9.50     A0/1 38 0
40 HD 54272 RR* 07 08 53.8545016128 +19 19 38.067508596   9.02 8.77     A5 19 0
41 HD 56405 * 07 16 14.5526564520 -15 35 08.486158380   5.519 5.447     A1V 74 0
42 V* DD Lyn dS* 07 55 40.8273346368 +35 24 45.653471280   6.478 6.221     A3p 73 0
43 HD 66684 ** 08 05 37.05577 +27 31 47.0419   6.22 6.21     B9.5Vp_lB+A0Vnp 45 0
44 * 50 Cnc PM* 08 46 56.0189914848 +12 06 35.830080180   5.992 5.885 7.20 5.76 A1Vp 91 0
45 V* HZ Vel dS* 08 49 52.3521972168 -39 08 29.771430000   6.602 6.368     A2/3II/III 72 0
46 HD 79108 PM* 09 12 12.8807934720 +03 52 01.121272932   6.127 6.131     A0V 74 0
47 HD 81290 Pe* 09 23 02.0651900592 -49 03 30.794478948   9.15 8.89     F4VkA3mA3_lB? 55 0
48 * 21 UMa ** 09 25 37.84525 +54 00 57.3021           A2Vnp 22 0
49 V* AK Ant dS* 09 34 56.5518460560 -28 52 39.334572984   9.10 8.79     F1VkA3mA3_lB? 62 0
50 HD 83277 Pe* 09 36 31.8232900848 -27 57 45.149470020   8.57 8.29     F2VkA3mA3_lB? 43 0
51 HD 84123 PM* 09 44 06.8766339648 +42 03 03.128528304   7.135 6.838     A4III 55 0
52 HD 84948 SB* 09 50 05.8773671472 +49 04 31.750535568   8.42 8.12     F0 57 0
53 V* GM Leo dS* 10 04 08.3785722672 +11 37 42.647835324 7.330 7.310 7.130     A8VkA0mA0.5_lB 40 0
54 * 21 LMi dS* 10 07 25.7623702826 +35 14 40.905120440 4.74 4.67 4.49 4.31 4.24 A7V(n) 226 0
55 HD 89353 pA* 10 18 07.5899342712 -28 59 31.195183524   5.76 5.53     B9.5Ib/II 307 0
56 HD 89239 * 10 18 10.5145865688 +27 24 55.723836672   6.498 6.523     A0V 71 0
57 HD 90821 * 10 29 37.0986897144 +26 10 58.569963240   9.54 9.45     F0 19 0
58 * 33 LMi * 10 31 51.3753968952 +32 22 46.405276428   6.001 5.905     A0Va- 70 0
59 HD 97773 ** 11 15 28.69772 +47 28 46.1881   7.79 7.55     A5 39 0
60 HD 97937 PM* 11 15 57.8025884928 +12 50 41.281142424   6.934 6.645     F0V 47 0
61 * 55 UMa SB* 11 19 07.8861142632 +38 11 08.135935332   4.90 4.80     A2V 134 0
62 HD 98772 * 11 22 51.2436595560 +64 19 49.841322096 6.180 6.110 6.030     A3V 59 0
63 HD 101108 * 11 38 19.3666459704 +38 45 16.889006304   9.05 8.87     A5_lB 43 0
64 V* V1023 Cen dS* 11 47 59.7575640552 -40 17 29.472275436   8.18 7.94     A9VkA5mA5(_lB) 37 0
65 HD 105058 dS* 12 05 43.3556676096 +49 40 55.994662056   9.05 8.88     A2p 64 0
66 V* II Vir dS* 12 10 27.1880699112 -07 46 26.311095696   6.73 6.54     A3III 31 0
67 HD 106223 PM* 12 13 16.8983653416 +30 16 58.946364228 7.64 7.72 7.44     hF3VkA3mA3_lB 90 0
68 HD 107233 PM* 12 19 55.6448625816 -48 18 59.471119476   7.60 7.36     F0VkA3mA2_lB 44 0
69 * 14 Com * 12 26 24.0644226936 +27 16 05.659806648 5.40 5.22 4.95 4.70 4.55 F1IV:npS_sh 161 0
70 HD 109738 * 12 37 38.0633553648 -67 51 53.379084672   8.50 8.30     hA9VnkA0mA0_lB 37 0
71 * 9 CVn * 12 38 46.2769175928 +40 52 28.787416500   6.547 6.352     A6Vp_lB 47 0
72 * 27 Vir dS* 12 41 34.3919383824 +10 25 34.568504040   6.408 6.215     A6Vp 71 0
73 * rho Vir dS* 12 41 53.0569475088 +10 14 08.252569320 5.00 4.97 4.88 4.80 4.78 A0Va_lB 224 0
74 HD 111005 * 12 46 14.8230470856 +02 27 51.461399556   8.30 7.97     A9V 44 0
75 V* DT CVn dS* 12 50 10.7400521424 +37 31 00.979591260   6.025 5.872     A5Vp_lB 96 0
76 V* MO Hya dS* 12 51 57.8968126608 -26 44 17.772380448   6.358 6.141     F0VkA1mA1_lB 131 0
77 * 41 Vir PM* 12 53 49.7172100776 +12 25 06.220936056   6.522 6.241     kA7hF0mF0(V) 84 0
78 * 25 CVn ** 13 37 27.62782 +36 17 41.6337   5.05 4.82     A7III+A8V: 146 0
79 V* FQ Boo dS* 13 49 44.1554383104 +08 24 31.089742272   6.717 6.604     hA5VkA2mA2_lB 48 0
80 V* QT Vir dS* 13 52 09.3005176752 +06 00 04.845199464   8.76 8.51     hF0VkA6mA6_lB 30 0
81 * lam Boo dS* 14 16 23.0184083839 +46 05 17.895459693 4.31 4.26 4.18 4.16 4.13 A0Va_lB 348 0
82 HD 125489 ** 14 19 40.9504184928 +00 23 03.603726852   6.377 6.179     A7Vn 53 0
83 HD 125889 * 14 23 15.7478244192 -35 49 55.028871732   10.08 9.81     F1VkA4mA4(_lB?) 20 0
84 * 55 Hya * 14 47 22.5556927680 -25 37 27.359626548   5.562 5.609     B9IV/V 77 0
85 HD 130767 * 14 49 28.7085118464 +19 30 37.316208276   6.94 6.90   6.85 A0Va_lB 31 0
86 * tau02 Ser * 15 32 09.6750062424 +16 03 22.209057684   6.184 6.216     B9V 63 0
87 * b Ser ** 15 51 15.5919760102 -03 05 25.822526196   5.23 5.10     A2IV-Vn 115 0
88 V* HR Lib dS* 15 56 33.3736378344 -14 49 45.972944112   6.345 6.117     F1VskA1.5mA1.5_lB 120 0
89 V* IN Lup dS* 15 59 10.9039194264 -38 44 54.944322756   7.46 7.17     F2VkA3mA3_lB? 49 0
90 * 11 Sco * 16 07 36.4153307712 -12 44 43.464533568   5.77 5.77     B9V 59 0
91 HD 149303 * 16 31 47.2275879216 +45 35 53.744910612 5.850 5.78 5.68 7.16   A2Vn_lB 63 0
92 V* NP TrA dS* 16 33 05.1553102248 -60 54 12.847834764   8.09 7.90     A2IVn 31 0
93 HD 149130 Pu* 16 36 38.5933961280 -62 38 52.607719104   8.79 8.48     F1VpSr 37 0
94 * eps Her SB* 17 00 17.3733587483 +30 55 35.055213817 3.80 3.91 3.92 3.93 3.97 A0V 170 0
95 HD 153747 dS* 17 02 53.8269014280 -38 27 36.818859204   7.54 7.42     A7VkA0mA0_lB 57 1
96 HD 154153 * 17 05 48.4627188912 -44 06 18.186019740   6.450 6.178     F1VkA3mA3_lB? 59 1
97 HD 156954 * 17 21 00.3553285752 -13 05 07.621955772   7.97 7.67     F0.5VkA9mA9 46 1
98 HD 159082 SB* 17 32 14.8801753080 +11 55 48.177391296 6.260 6.440 6.450     B9.5V 89 0
99 HD 160928 ** 17 44 42.0095149680 -42 43 45.550054236   6.027 5.871     A3IVn 45 0
100 * phi Dra a2* 18 20 45.43224 +71 20 16.1499   4.15 4.22     B8V 195 0
101 HD 169009 * 18 23 02.1094394400 -10 13 08.238885060   6.443 6.313     B9III 54 0
102 * eps Sgr PM* 18 24 10.31840 -34 23 04.6193   1.82 1.81     B9IVp_lB? 211 1
103 V* V704 CrA dS* 18 24 30.0555469896 -44 11 56.681839752   8.35 8.11     F0VkA3mA3_lB 27 0
104 V* V346 Pav dS* 18 25 31.6299933048 -63 01 17.529458664   6.313 6.122     A8VkA2mA2_lB 72 0
105 HD 170680 * 18 31 26.2978449720 -18 24 09.713977668   5.126 5.117     B9/9.5V 83 0
106 HD 171948 SB* 18 36 37.0229804112 +22 06 27.294803964   6.82 6.77     B9 38 1
107 HD 174005 * 18 48 39.4931934120 -06 00 15.524947980   6.717 6.494     A7VkA2mA2_lB 35 0
108 HD 175445 * 18 55 33.2829853224 -02 18 23.649417144   7.90 7.79     A2Va 22 1
109 HD 177120 ** 19 04 14.19485 -22 53 47.4664           A1III-IV(e) 21 0
110 * lam Aql PM* 19 06 14.9386542192 -04 52 57.225885348 3.07 3.34 3.43 3.46 3.55 B8.5V 225 0
111 HD 179791 V* 19 13 44.0319885648 +05 30 56.198549232 6.69 6.58 6.49     A3V 54 0
112 * c Aql dS* 19 29 00.9869402808 +01 57 01.616825124   5.865 5.783     A0IVp 182 0
113 HD 184190 * 19 34 55.2809531856 -39 47 26.248329312   10.02 9.74     A7/9s(w) 18 0
114 HD 184779 * 19 37 59.4732643224 -43 54 28.031912172   9.17 8.90     F0VkA5mA5(_lB) 27 0
115 HD 191850 V* 20 13 54.5079591960 -46 33 23.192406180   9.87 9.69 9.6 10.953 A9VkA3mA3_lB 31 0
116 HD 192424A * 20 14 04.5288848660 +22 13 21.532093379   7.92 7.88     A0 29 0
117 * b03 Cyg dS* 20 14 32.0323540824 +36 48 22.700909124 5.10 5.11 4.99 4.79 4.72 A2V 260 0
118 HD 193063A * 20 16 48.5307012033 +39 41 50.354061717   8.14 8.21     B9V 25 0
119 HD 193256 * 20 20 26.5730016024 -29 11 28.700728368   7.703 7.525 8.49   A8VnkA3mA3(_lB) 66 0
120 HD 193281 * 20 20 27.8803232880 -29 11 49.972752276   6.76 6.64 7.50   A2IV-V 102 0
121 HD 196821 V* 20 39 10.6488328200 +21 49 02.792407836   6.027 6.075     A0III 57 0
122 CD-62 1338A PM* 20 51 38.5075523160 -62 25 45.585188364   6.35 6.21 6.55   A3IV(n) 71 0
123 CD-62 1338B PM* 20 51 38.8562846352 -62 25 45.255818352   6.74 6.56     A3III 35 0
124 HD 200841 * 21 04 42.6234504936 +41 00 28.774035000   8.33 8.28     A 24 0
125 HD 204041 PM* 21 25 51.5848015320 +00 32 03.634403820   6.593 6.450     A1Vb 108 0
126 HD 204965 * 21 30 20.3307128760 +52 57 28.784301300   6.079 6.007     A3V 35 0
127 HD 210111 dS* 22 08 42.6440819592 -33 07 32.494799028   6.564 6.386     A9VkA2mA2_lB 84 0
128 * tet Peg PM* 22 10 11.9886121211 +06 11 52.517717538 3.72 3.62 3.55 3.50 3.46 A1Va 187 0
129 HD 212150 * 22 18 20.4356149776 +76 29 16.881679608 6.550 6.640 6.630     A1Vn 34 0
130 * 9 Lac PM* 22 37 22.4179184437 +51 32 42.435680257 4.98 4.87 4.63 4.41 4.27 A9VkA7mA6 79 0
131 HD 216847 * 22 57 22.0095354336 -56 52 30.696690864   7.29 7.06     A7V 31 0
132 * 2 And ** 23 02 36.38176 +42 45 28.0628           A1V 167 0
133 HD 218396 El* 23 07 28.7157209544 +21 08 03.310767492   6.21 5.953     F0+VkA5mA5 1141 0
134 * tau Peg dS* 23 20 38.2462291728 +23 44 25.278232056   4.745 4.580     A5Vp_lB 183 0
135 * 97 Aqr ** 23 22 39.17113 -15 02 21.6245   5.43 5.22     A3V 109 0
136 * 15 And dS* 23 34 37.5368337288 +40 14 11.182658856   5.652 5.563 6.91   A1Va 134 0
137 * del Scl PM* 23 48 55.5462353347 -28 07 48.976490953 4.55 4.58 4.57 4.53 4.55 A0VankB9((_lB)) 145 0

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