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

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

2003A&A...412..447G - Astronomy and Astrophysics, volume 412447-464 (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 - 2026 		#notes
1 HD 225218 SB* 00 04 36.5845256345 +42 05 33.080174481 6.410 6.28 6.14 7.30   A3Vs 57 0
2 HD 3 * 00 05 09.7582686336 +45 13 44.510792196 6.840 6.770 6.710     A0Vn_lB 53 0
3 HD 319 PM* 00 07 46.8995868600 -22 30 30.805174800   6.055 5.923     A1VbmA2_lB 112 0
4 HD 2904 * 00 33 19.2656656224 +70 58 54.677413200 6.220 6.330 6.380     A0Vnn_lB 48 0
5 HD 4158 * 00 43 54.0507025992 -20 23 59.222823468   9.76 9.54     F2VkA1.5mA1.5_lB 41 0
6 HD 5789 * 01 00 03.5576514672 +44 42 47.691064620   6.01 6.05     B9.5Vnn_lB 60 0
7 HD 6173 * 01 03 29.8960694088 +50 32 15.681148332   8.65 8.52     A0IIIn 21 0
8 V* BS Tuc dS* 01 08 03.9681734664 -61 52 17.817500280   7.71 7.45     hF0mA1_lB 100 0
9 HD 7908 * 01 18 25.3734538512 -23 00 47.600538120   7.569 7.302     F0VmA3_lB 54 0
10 V* BD Phe dS* 01 50 54.4352128992 -50 12 22.092503544   6.080 5.929     F0VkA2mA2_lB 110 0
11 * gam02 Ari PM* 01 53 31.8129284424 +19 17 37.879979172   4.49 4.52     A2IVpSiSrCr 162 0
12 * gam01 Ari PM* 01 53 31.8192032943 +19 17 45.430793660   4.558 4.589 6.71   A0Vnp_lB 85 0
13 V* CV Phe dS* 02 12 47.0859332544 -44 29 20.456479752   8.11 7.83     F1VkA8mA8(_lB) 33 0
14 HD 15165 dS* 02 26 45.6478667280 +10 33 55.070566704   6.94 6.69     F0IV 97 0
15 HD 16955 * 02 43 51.2435867712 +25 38 18.050045172   6.46 6.39 7.45   A3V 42 0
16 HD 21335 ** 03 27 03.2348403240 +18 45 23.558435856   6.72 6.57     A3V 72 0
17 * 20 Eri a2* 03 36 17.4041095200 -17 28 01.472307996 4.61 5.10 5.23     B8/9III 181 0
18 HD 23258 * 03 44 28.2037966608 +20 55 43.448620908   6.100 6.074     A0Vp_lB 60 0
19 HD 23392 * 03 44 32.7248403456 -08 35 12.466693284   8.29 8.24     A0Va-_lB 30 0
20 HD 24472 * 03 52 49.7455748424 -22 16 34.602082932   7.40 7.10     A9V 42 0
21 HD 26801 * 04 18 11.0180496528 +61 54 45.248411952   7.72 7.72     B9 25 0
22 V* EX Eri dS* 04 46 25.7495143440 -28 05 14.805163104   6.347 6.173     A7VkA3mA3 125 0
23 * pi.02 Ori * 04 50 36.7224881321 +08 54 00.652210041 4.39 4.36 4.35 4.29 4.29 A1Vn 193 0
24 * pi.01 Ori PM* 04 54 53.7280989194 +10 09 03.003446941   4.723 4.648     A0Va_lB 268 0
25 * 16 Cam PM* 05 23 27.8426747304 +57 32 39.837146280 5.150 5.230 5.250   5.23 A0Vne 67 0
26 V* V1649 Ori dS* 05 23 31.0655908752 +05 19 23.111389848   6.455 6.334     hA3VamA1_lB 50 0
27 HD 290492 ** 05 31 18.76416 -00 29 24.1404   9.648 9.625 9.878   kA1hA6mA4 28 0
28 HD 36726 * 05 33 51.7278163992 -00 04 36.342051096   8.91 8.82     hA5VkA0mA0_lB 47 1
29 HD 294253 HS* 05 36 41.7835166016 -03 30 12.476798712   9.675 9.637 9.974   A0VakB8.5mB9(_lB) 40 1
30 HD 36496 ** 05 37 16.0241407 +66 41 48.090148 6.550 6.500 6.290     A8Vn 57 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 100 0
32 V* V1790 Ori dS* 05 40 24.2915301336 -00 46 16.753504332   10.8 10.8     A0 38 0
33 HD 37886 * 05 41 32.0065124640 -02 58 26.602064364   8.956 8.979 9.67 9.51 B8III 37 0
34 * 131 Tau ** 05 47 13.1536316 +14 29 17.967416   5.785 5.721     A3Vn 108 0
35 HD 39421 * 05 52 07.7290666608 -09 02 30.844893552   6.045 5.960     A0V 63 0
36 * ksi Aur * 05 54 50.7669372792 +55 42 25.080150456   5.005 4.960     A2V 126 0
37 HD 41580 * 06 06 28.0434611568 +10 45 01.012449456   7.13 7.19     A0 34 0
38 * 53 Aur ** 06 38 23.0105318280 +28 59 03.615135864   5.761 5.744     B9Mn+F0m 139 0
39 HD 261904 Y*O 06 41 00.6874797312 +09 24 11.888973612   10.38 9.50     A0/1 41 0
40 HD 54272 RR* 07 08 53.8545016128 +19 19 38.067508596   9.02 8.77     A5 20 0
41 HD 56405 * 07 16 14.5526564520 -15 35 08.486158380   5.519 5.447     A1V 79 0
42 V* DD Lyn dS* 07 55 40.8273346368 +35 24 45.653471280   6.478 6.221     A3p 78 0
43 HD 66684 ** 08 05 37.05577 +27 31 47.0419   6.22 6.21     B9.5Vp_lB+A0Vnp 47 0
44 * 50 Cnc PM* 08 46 56.0189914848 +12 06 35.830080180   5.992 5.885 7.20 5.76 A1Vp 99 0
45 HD 75654 dS* 08 49 52.3521972168 -39 08 29.771430000   6.602 6.368     A2/3II/III 78 0
46 HD 79108 PM* 09 12 12.8807934720 +03 52 01.121272932   6.127 6.131     A0V 78 0
47 HD 81290 Pe* 09 23 02.0651900592 -49 03 30.794478948   9.15 8.89     F4VkA3mA3_lB? 58 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? 64 0
50 HD 83277 Pe* 09 36 31.8232900848 -27 57 45.149470020   8.57 8.29     F2VkA3mA3_lB? 46 0
51 HD 84123 PM* 09 44 06.8766339648 +42 03 03.128528304   7.135 6.838     A4III 59 0
52 HD 84948 SB* 09 50 05.8773671472 +49 04 31.750535568   8.42 8.12     F0 59 0
53 V* GM Leo dS* 10 04 08.3785722672 +11 37 42.647835324 7.330 7.310 7.130     A8VkA0mA0.5_lB 41 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) 234 0
55 HD 89353 pA* 10 18 07.5899342712 -28 59 31.195183524   5.76 5.53     B9.5Ib/II 315 0
56 HD 89239 Em* 10 18 10.5145865688 +27 24 55.723836672   6.498 6.523     A2VmB9.5p_lB 77 0
57 HD 90821 * 10 29 37.0986897144 +26 10 58.569963240   9.54 9.45     F0 20 0
58 * 33 LMi Em* 10 31 51.3753968952 +32 22 46.405276428   6.001 5.905     A0Va- 77 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 52 0
61 * 55 UMa SB* 11 19 07.8861142632 +38 11 08.135935332   4.90 4.80     A2V 142 0
62 HD 98772 * 11 22 51.2436595560 +64 19 49.841322096 6.180 6.110 6.030     A3V 62 0
63 HD 101108 * 11 38 19.3666459704 +38 45 16.889006304   9.05 8.87     A5_lB 45 0
64 V* V1023 Cen dS* 11 47 59.7575640552 -40 17 29.472275436   8.18 7.94     A9VkA5mA5(_lB) 38 0
65 HD 105058 dS* 12 05 43.3556676096 +49 40 55.994662056   9.05 8.88     A2IV 67 0
66 V* II Vir dS* 12 10 27.1880699112 -07 46 26.311095696   6.73 6.54     A3III 33 0
67 HD 106223 Em* 12 13 16.8983653416 +30 16 58.946364228 7.64 7.72 7.44     hF3VkA3mA3_lB 94 0
68 HD 107233 PM* 12 19 55.6448625816 -48 18 59.471119476   7.60 7.36     F0VkA3mA2_lB 47 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 167 0
70 HD 109738 * 12 37 38.0633553648 -67 51 53.379084672   8.50 8.30     hA9VnkA0mA0_lB 39 0
71 * 9 CVn * 12 38 46.2769175928 +40 52 28.787416500   6.547 6.352     A6Vp_lB 51 0
72 * 27 Vir dS* 12 41 34.3919383824 +10 25 34.568504040   6.408 6.215     A6Vp 77 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 232 0
74 HD 111005 * 12 46 14.8230470856 +02 27 51.461399556   8.30 7.97     A9V 47 0
75 V* DT CVn dS* 12 50 10.7400521424 +37 31 00.979591260   6.025 5.872     A5Vp_lB 101 0
76 V* MO Hya dS* 12 51 57.8968126608 -26 44 17.772380448   6.358 6.141     F0VkA1mA1_lB 139 0
77 * 41 Vir PM* 12 53 49.7172100776 +12 25 06.220936056   6.522 6.241     kA7hF0mF0(V) 92 0
78 * 25 CVn ** 13 37 27.62782 +36 17 41.6337           A7III+A8V: 150 0
79 V* FQ Boo dS* 13 49 44.1554383104 +08 24 31.089742272   6.717 6.604     hA5VkA2mA2_lB 51 0
80 V* QT Vir dS* 13 52 09.3005176752 +06 00 04.845199464   8.76 8.51     hF0VkA6mA6_lB 31 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 362 0
82 HD 125489 ** 14 19 40.9504184928 +00 23 03.603726852   6.377 6.179     A7Vn 57 0
83 HD 125889 * 14 23 15.7478244192 -35 49 55.028871732   10.08 9.81     F1VkA4mA4(_lB?) 21 0
84 * 55 Hya * 14 47 22.5556927680 -25 37 27.359626548   5.562 5.609     B9IV/V 83 0
85 HD 130767 * 14 49 28.7085118464 +19 30 37.316208276   6.94 6.90   6.85 A0Va_lB 32 0
86 * tau02 Ser * 15 32 09.6750062424 +16 03 22.209057684   6.184 6.216     B9V 66 0
87 * b Ser ** 15 51 15.5919760102 -03 05 25.822526196   5.23 5.10     A2IV-Vn 121 0
88 V* HR Lib dS* 15 56 33.3736378344 -14 49 45.972944112   6.345 6.117     F1VskA1.5mA1.5_lB 127 0
89 V* IN Lup dS* 15 59 10.9039194264 -38 44 54.944322756   7.46 7.17     F2VkA3mA3_lB? 51 0
90 * 11 Sco * 16 07 36.4153307712 -12 44 43.464533568   5.77 5.77     B9V 62 0
91 HD 149303 * 16 31 47.2275879216 +45 35 53.744910612 5.850 5.78 5.68 7.16   A2Vn_lB 69 0
92 V* NP TrA dS* 16 33 05.1553102248 -60 54 12.847834764   8.09 7.90     A2IVn 33 0
93 HD 149130 Pu* 16 36 38.5933961280 -62 38 52.607719104   8.79 8.48     F1VpSr 39 0
94 * eps Her SB* 17 00 17.3733587483 +30 55 35.055213817 3.80 3.91 3.92 3.93 3.97 A0V 177 0
95 HD 153747 dS* 17 02 53.8269014280 -38 27 36.818859204   7.54 7.42     A7VkA0mA0_lB 59 1
96 HD 154153 * 17 05 48.4627188912 -44 06 18.186019740   6.450 6.178     F1VkA3mA3_lB? 63 1
97 HD 156954 * 17 21 00.3553285752 -13 05 07.621955772   7.97 7.67     F0.5VkA9mA9 49 1
98 HD 159082 SB* 17 32 14.8801753080 +11 55 48.177391296 6.260 6.440 6.450     B9.5V 94 0
99 HD 160928 ** 17 44 42.0095149680 -42 43 45.550054236   6.027 5.871     A3IVn 47 0
100 * phi Dra a2* 18 20 45.43224 +71 20 16.1499   4.15 4.22     B8V 200 0
101 HD 169009 * 18 23 02.1094394400 -10 13 08.238885060   6.443 6.313     B9III 57 0
102 * eps Sgr PM* 18 24 10.31840 -34 23 04.6193   1.82 1.81     B9IVp_lB? 221 1
103 HD 168947 dS* 18 24 30.0555469896 -44 11 56.681839752   8.35 8.11     F0VkA3mA3_lB 29 0
104 HD 168740 dS* 18 25 31.6299933048 -63 01 17.529458664   6.313 6.122     A8VkA2mA2_lB 78 0
105 HD 170680 * 18 31 26.2978449720 -18 24 09.713977668   5.126 5.117     B9/9.5V 87 0
106 HD 171948 SB* 18 36 37.0229804112 +22 06 27.294803964   6.82 6.77     B9 40 1
107 HD 174005 * 18 48 39.4931934120 -06 00 15.524947980   6.717 6.494     A7VkA2mA2_lB 38 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 234 0
111 HD 179791 V* 19 13 44.0319885648 +05 30 56.198549232 6.69 6.58 6.49     A3V 56 0
112 * c Aql dS* 19 29 00.9869402808 +01 57 01.616825124   5.865 5.783     A0IVp 188 0
113 HD 184190 * 19 34 55.2809531856 -39 47 26.248329312   10.02 9.74     A7/9s(w) 20 0
114 HD 184779 * 19 37 59.4732643224 -43 54 28.031912172   9.17 8.90     F0VkA5mA5(_lB) 28 0
115 HD 191850 V* 20 13 54.5079591960 -46 33 23.192406180   9.87 9.69 9.6 10.953 A9VkA3mA3_lB 32 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 284 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) 67 0
120 HD 193281 * 20 20 27.8803232880 -29 11 49.972752276   6.76 6.64 7.50   A2IV-V 105 0
121 HD 196821 V* 20 39 10.6488328200 +21 49 02.792407836   6.027 6.075     A0III 59 0
122 CD-62 1338A PM* 20 51 38.5075523160 -62 25 45.585188364   6.35 6.21 6.55   A3IV(n) 74 0
123 CD-62 1338B PM* 20 51 38.8562846352 -62 25 45.255818352   6.74 6.56     A3III 38 0
124 HD 200841 * 21 04 42.6234504936 +41 00 28.774035000   8.33 8.28     A 28 0
125 HD 204041 PM* 21 25 51.5848015320 +00 32 03.634403820   6.593 6.450     A1Vb 114 0
126 HD 204965 * 21 30 20.3307128760 +52 57 28.784301300   6.079 6.007     A3V 37 0
127 HD 210111 dS* 22 08 42.6440819592 -33 07 32.494799028   6.564 6.386     A9VkA2mA2_lB 88 0
128 * tet Peg PM* 22 10 11.9886121211 +06 11 52.517717538 3.72 3.62 3.55 3.50 3.46 A1Va 194 0
129 HD 212150 * 22 18 20.4356149776 +76 29 16.881679608 6.550 6.640 6.630     A1Vn 36 0
130 * 9 Lac PM* 22 37 22.4179184437 +51 32 42.435680257 4.98 4.87 4.63 4.41 4.27 A9VkA7mA6 83 0
131 HD 216847 * 22 57 22.0095354336 -56 52 30.696690864   7.29 7.06     A7V 33 0
132 * 2 And ** 23 02 36.38176 +42 45 28.0628           A1V 169 0
133 HD 218396 El* 23 07 28.7157209544 +21 08 03.310767492   6.21 5.953     F0+VkA5mA5 1285 0
134 * tau Peg dS* 23 20 38.2462291728 +23 44 25.278232056   4.745 4.580     A5Vp_lB 189 0
135 * 97 Aqr ** 23 22 39.17113 -15 02 21.6245   5.43 5.22     A3V 112 0
136 * 15 And dS* 23 34 37.5368337288 +40 14 11.182658856   5.652 5.563 6.91   A1Va 141 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)) 149 0

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