2017MNRAS.466..546M

Query : 2017MNRAS.466..546M

2017MNRAS.466..546M - Mon. Not. R. Astron. Soc., 466, 546-555 (2017/March-3)

Gaia's view of the λ Boo star puzzle.

MURPHY S.J. and PAUNZEN E.

Abstract (from CDS):

The evolutionary status of the chemically peculiar class of λ Boo stars has been intensely debated. It is now agreed that the λ Boo phenomenon affects A stars of all ages, from star formation to the terminal age main sequence, but the cause of the chemical peculiarity is still a puzzle. We revisit the debate of their ages and temperatures in order to shed light on the phenomenon, using the new parallaxes in Gaia Data Release 1 with existing Hipparcos parallaxes and multicolour photometry. We find that no single formation mechanism is able to explain all the observations, and suggest that there are multiple channels producing λ Boo spectra. The relative importance of these channels varies with age, temperature and environment.

Abstract Copyright: © 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): accretion, accretion discs - asteroseismology - stars: chemically peculiar - circumstellar matter - stars: distances - ISM: clouds - ISM: clouds

VizieR on-line data: <Available at CDS (J/MNRAS/466/546): table1.dat>

Simbad objects: 173

goto Full paper

goto View the references in ADS

Number of rows : 173
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 3 * 00 05 09.7582686336 +45 13 44.510792196 6.840 6.770 6.710     A0Vn_lB 53 0
2 HD 319 PM* 00 07 46.8995868600 -22 30 30.805174800   6.055 5.923     A1VbmA2_lB 112 0
3 HD 2904 * 00 33 19.2656656224 +70 58 54.677413200 6.220 6.330 6.380     A0Vnn_lB 48 0
4 HD 4158 * 00 43 54.0507025992 -20 23 59.222823468   9.76 9.54     F2VkA1.5mA1.5_lB 41 0
5 HD 6173 * 01 03 29.8960694088 +50 32 15.681148332   8.65 8.52     A0IIIn 21 0
6 V* BS Tuc dS* 01 08 03.9681734664 -61 52 17.817500280   7.71 7.45     hF0mA1_lB 100 0
7 HD 7908 * 01 18 25.3734538512 -23 00 47.600538120   7.569 7.302     F0VmA3_lB 54 0
8 * 97 Psc dS* 01 29 52.8627068256 +18 21 20.407429656   6.159 6.023     A3Vb_lB 83 0
9 V* BD Phe dS* 01 50 54.4352128992 -50 12 22.092503544   6.080 5.929     F0VkA2mA2_lB 110 0
10 * gam02 Ari PM* 01 53 31.8129284424 +19 17 37.879979172   4.49 4.52     A2IVpSiSrCr 162 0
11 V* CV Phe dS* 02 12 47.0859332544 -44 29 20.456479752   8.11 7.83     F1VkA8mA8(_lB) 33 0
12 HD 15164 * 02 26 48.2857696080 +10 34 57.591052716   8.58 8.27     F1VkA7mA6_(lB)? 36 0
13 * mu. Ari ** 02 42 21.9357953640 +20 00 41.275791648 5.640 5.710 5.740     A0V 97 0
14 HD 16955 * 02 43 51.2435867712 +25 38 18.050045172   6.46 6.39 7.45   A3V 42 0
15 V* RZ Cas SB* 02 48 55.5102370536 +69 38 03.441502644   6.40 6.26     A3V 471 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 V* DO Eri a2* 03 55 16.1313315312 -12 05 56.727712752 6.35 6.32 6.00     A9VpSrEuCr 411 0
22 V* V1140 Tau a2* 04 20 37.7861065824 +28 53 31.244361108   8.18 7.92     B9/A0 69 0
23 V* EX Eri dS* 04 46 25.7495143440 -28 05 14.805163104   6.347 6.173     A7VkA3mA3 125 0
24 * pi.02 Ori * 04 50 36.7224881321 +08 54 00.652210041 4.39 4.36 4.35 4.29 4.29 A1Vn 193 0
25 * pi.01 Ori PM* 04 54 53.7280989194 +10 09 03.003446941   4.723 4.648     A0Va_lB 268 0
26 V* AB Aur Ae* 04 55 45.8458932216 +30 33 04.292077032 7.20 7.16 7.05 6.96 6.70 A0Ve 1176 2
27 HD 34797 a2* 05 19 18.3112191840 -18 30 34.391115684 6.02 6.43 6.54     B7Vp 111 0
28 * 16 Cam PM* 05 23 27.8426747304 +57 32 39.837146280 5.150 5.230 5.250   5.23 A0Vne 67 0
29 V* V1649 Ori dS* 05 23 31.0655908752 +05 19 23.111389848   6.455 6.334     hA3VamA1_lB 50 0
30 HD 294253 HS* 05 36 41.7835166016 -03 30 12.476798712   9.675 9.637 9.974   A0VakB8.5mB9(_lB) 40 1
31 HD 36496 ** 05 37 16.0241407 +66 41 48.090148 6.550 6.500 6.290     A8Vn 57 0
32 NAME Ori I As* 05 38 -02.8           ~ 653 0
33 V* V1790 Ori dS* 05 40 24.2915301336 -00 46 16.753504332   10.8 10.8     A0 38 0
34 HD 37886 * 05 41 32.0065124640 -02 58 26.602064364   8.956 8.979 9.67 9.51 B8III 37 0
35 * 131 Tau ** 05 47 13.1536316 +14 29 17.967416   5.785 5.721     A3Vn 108 0
36 HD 39421 * 05 52 07.7290666608 -09 02 30.844893552   6.045 5.960     A0V 63 0
37 * ksi Aur * 05 54 50.7669372792 +55 42 25.080150456   5.005 4.960     A2V 126 0
38 HD 40588 * 06 01 10.0410808248 +31 02 04.262019612 6.360 6.280 6.190     A3VkA0.5mA0_lB 49 0
39 V* AU Col dS* 06 09 02.5633549536 -41 07 04.752664572   7.60 7.43     A8VnkA2mA2_lB 23 0
40 * 53 Aur ** 06 38 23.0105318280 +28 59 03.615135864   5.761 5.744     B9Mn+F0m 139 0
41 HD 54272 RR* 07 08 53.8545016128 +19 19 38.067508596   9.02 8.77     A5 20 0
42 HD 56405 * 07 16 14.5526564520 -15 35 08.486158380   5.519 5.447     A1V 79 0
43 V* DD Lyn dS* 07 55 40.8273346368 +35 24 45.653471280   6.478 6.221     A3p 78 0
44 HD 66920 * 07 59 15.7648072224 -73 14 39.015488508   6.470 6.327     A3III 33 0
45 HD 68758 PM* 08 12 45.9007326816 -29 54 38.718208620   6.576 6.519     A1V 33 0
46 HD 73210 SB* 08 37 46.7628568224 +19 16 01.991343720   6.91 6.75     A5V 104 0
47 HD 73872 dS* 08 41 13.7739225288 +19 55 19.183268568   8.55 8.34     A5V 83 0
48 * 50 Cnc PM* 08 46 56.0189914848 +12 06 35.830080180   5.992 5.885 7.20 5.76 A1Vp 99 0
49 HD 74911 * 08 47 10.1616904416 +09 23 00.712309380   8.64 8.51     A5 20 0
50 HD 75654 dS* 08 49 52.3521972168 -39 08 29.771430000   6.602 6.368     A2/3II/III 78 0
51 * kap Cnc a2* 09 07 44.8095541176 +10 40 05.519586828 4.70 5.13 5.24     B8IIImnp 376 0
52 HD 79025 * 09 09 44.9967109272 -49 25 27.784888356   6.638 6.476     A3/5III(m) 33 0
53 HD 78661 ** 09 09 46.4240462880 +11 33 51.755396796 6.720 6.810 6.480     F2VkA7mA7 63 0
54 HD 79108 PM* 09 12 12.8807934720 +03 52 01.121272932   6.127 6.131     A0V 78 0
55 * tet Hya SB* 09 14 21.8600711562 +02 18 51.551915906   3.82   3.9   B9.5V+DA1.6 224 0
56 * 38 Lyn PM* 09 18 50.6435791217 +36 48 09.345084336   3.96 3.92   3.81 A1V 149 0
57 HD 81290 Pe* 09 23 02.0651900592 -49 03 30.794478948   9.15 8.89     F4VkA3mA3_lB? 58 0
58 HD 82573 * 09 32 20.4086672088 -19 24 01.096523604   5.88 5.74     A4III 46 0
59 V* AK Ant dS* 09 34 56.5518460560 -28 52 39.334572984   9.10 8.79     F1VkA3mA3_lB? 64 0
60 HD 83277 Pe* 09 36 31.8232900848 -27 57 45.149470020   8.57 8.29     F2VkA3mA3_lB? 46 0
61 HD 84948 SB* 09 50 05.8773671472 +49 04 31.750535568   8.42 8.12     F0 59 0
62 V* GM Leo dS* 10 04 08.3785722672 +11 37 42.647835324 7.330 7.310 7.130     A8VkA0mA0.5_lB 41 0
63 * 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
64 HD 89239 Em* 10 18 10.5145865688 +27 24 55.723836672   6.498 6.523     A2VmB9.5p_lB 77 0
65 * 33 LMi Em* 10 31 51.3753968952 +32 22 46.405276428   6.001 5.905     A0Va- 77 0
66 * psi Crt ** 11 12 30.37188 -18 29 59.4995   6.105 6.105     A0V 68 0
67 HD 97773 ** 11 15 28.69772 +47 28 46.1881   7.79 7.55     A5 39 0
68 HD 97937 PM* 11 15 57.8025884928 +12 50 41.281142424   6.934 6.645     F0V 52 0
69 * 55 UMa SB* 11 19 07.8861142632 +38 11 08.135935332   4.90 4.80     A2V 142 0
70 HD 98772 * 11 22 51.2436595560 +64 19 49.841322096 6.180 6.110 6.030     A3V 62 0
71 HD 100546 Be* 11 33 25.4408872296 -70 11 41.241297948   6.71 6.30   6.64 A0VaekB8_lB 894 1
72 HD 100740 * 11 35 43.4170341288 +10 54 40.603620708   6.698 6.566     A4Vn 41 0
73 HD 101108 * 11 38 19.3666459704 +38 45 16.889006304   9.05 8.87     A5_lB 45 0
74 V* V1023 Cen dS* 11 47 59.7575640552 -40 17 29.472275436   8.18 7.94     A9VkA5mA5(_lB) 38 0
75 HD 105058 dS* 12 05 43.3556676096 +49 40 55.994662056   9.05 8.88     A2IV 67 0
76 HD 105199 Pe* 12 06 47.0204384616 +30 15 41.874380208   9.97 9.83     A0IVSr 43 0
77 HD 105260 Em* 12 07 14.1481884432 +17 36 27.719849592   9.43 9.21     A5 33 0
78 HD 106223 Em* 12 13 16.8983653416 +30 16 58.946364228 7.64 7.72 7.44     hF3VkA3mA3_lB 94 0
79 HD 107233 PM* 12 19 55.6448625816 -48 18 59.471119476   7.60 7.36     F0VkA3mA2_lB 47 0
80 HD 107223 * 12 19 57.7461471960 -65 00 50.478230088 8.31 8.27 8.18     A1IV-V 21 0
81 * 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
82 HD 108714 PM* 12 29 20.4612094416 +17 19 18.961019328   7.83 7.74     A0 31 0
83 * 20 Com * 12 29 43.2400536144 +20 53 45.989241288   5.751 5.679     A3V 82 0
84 HD 109738 * 12 37 38.0633553648 -67 51 53.379084672   8.50 8.30     hA9VnkA0mA0_lB 39 0
85 * 9 CVn * 12 38 46.2769175928 +40 52 28.787416500   6.547 6.352     A6Vp_lB 51 0
86 * 27 Vir dS* 12 41 34.3919383824 +10 25 34.568504040   6.408 6.215     A6Vp 77 0
87 * 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
88 HD 111005 * 12 46 14.8230470856 +02 27 51.461399556   8.30 7.97     A9V 47 0
89 * 34 Vir PM* 12 47 13.6388307744 +11 57 29.113830720   6.225 6.090   5.98 A4V(n) 58 0
90 V* DT CVn dS* 12 50 10.7400521424 +37 31 00.979591260   6.025 5.872     A5Vp_lB 101 0
91 V* MO Hya dS* 12 51 57.8968126608 -26 44 17.772380448   6.358 6.141     F0VkA1mA1_lB 139 0
92 HD 111893 SB* 12 52 27.4988670744 +16 07 20.982598212   6.454 6.285     A7V 62 0
93 * 41 Vir PM* 12 53 49.7172100776 +12 25 06.220936056   6.522 6.241     kA7hF0mF0(V) 92 0
94 * 39 Com ** 13 06 21.23974 +21 09 12.2343           F4V 120 0
95 HD 114879 * 13 12 55.3355062944 +34 16 53.673224736   9.08 8.92     A2 31 0
96 HD 114930 * 13 13 28.7137563384 +31 40 18.886486872   9.30 9.01     A5 37 0
97 * 25 CVn ** 13 37 27.62782 +36 17 41.6337           A7III+A8V: 150 0
98 HD 119288 PM* 13 42 12.7604652209 +08 23 18.227677011   6.58   5.9   F2V 130 0
99 V* FQ Boo dS* 13 49 44.1554383104 +08 24 31.089742272   6.717 6.604     hA5VkA2mA2_lB 51 0
100 V* QT Vir dS* 13 52 09.3005176752 +06 00 04.845199464   8.76 8.51     hF0VkA6mA6_lB 31 0
101 * alf Dra SB* 14 04 23.3575968507 +64 22 33.130623243 3.520 3.640 3.680     A0III 290 0
102 * 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
103 HD 125489 ** 14 19 40.9504184928 +00 23 03.603726852   6.377 6.179     A7Vn 57 0
104 HD 125889 * 14 23 15.7478244192 -35 49 55.028871732   10.08 9.81     F1VkA4mA4(_lB?) 21 0
105 * sig Boo PM* 14 34 40.8173867232 +29 44 42.457673940 4.76 4.84 4.47 4.13 3.94 F4VkF2mF1 632 0
106 * 55 Hya * 14 47 22.5556927680 -25 37 27.359626548   5.562 5.609     B9IV/V 83 0
107 HD 130767 * 14 49 28.7085118464 +19 30 37.316208276   6.94 6.90   6.85 A0Va_lB 32 0
108 * tau02 Ser * 15 32 09.6750062424 +16 03 22.209057684   6.184 6.216     B9V 66 0
109 HD 141569 Or* 15 49 57.7482550392 -03 55 16.341617064 7.22 7.20 7.12 7.00 7.04 A2VekB9mB9(_lB) 578 0
110 * b Ser ** 15 51 15.5919760102 -03 05 25.822526196   5.23 5.10     A2IV-Vn 121 0
111 V* HR Lib dS* 15 56 33.3736378344 -14 49 45.972944112   6.345 6.117     F1VskA1.5mA1.5_lB 127 0
112 V* IN Lup dS* 15 59 10.9039194264 -38 44 54.944322756   7.46 7.17     F2VkA3mA3_lB? 51 0
113 HD 143148 * 15 59 49.8381691512 -31 50 06.956208600   7.67 7.39     A7III/IV 22 0
114 * 11 Sco * 16 07 36.4153307712 -12 44 43.464533568   5.77 5.77     B9V 62 0
115 HD 145782 PM* 16 15 49.7975006976 -57 54 44.457871500   5.744 5.622     A3III 36 0
116 HD 149303 * 16 31 47.2275879216 +45 35 53.744910612 5.850 5.78 5.68 7.16   A2Vn_lB 69 0
117 HD 149130 Pu* 16 36 38.5933961280 -62 38 52.607719104   8.79 8.48     F1VpSr 39 0
118 * eps Her SB* 17 00 17.3733587483 +30 55 35.055213817 3.80 3.91 3.92 3.93 3.97 A0V 177 0
119 HD 153747 dS* 17 02 53.8269014280 -38 27 36.818859204   7.54 7.42     A7VkA0mA0_lB 59 1
120 HD 154153 * 17 05 48.4627188912 -44 06 18.186019740   6.450 6.178     F1VkA3mA3_lB? 63 1
121 HD 156954 * 17 21 00.3553285752 -13 05 07.621955772   7.97 7.67     F0.5VkA9mA9 49 1
122 HD 159082 SB* 17 32 14.8801753080 +11 55 48.177391296 6.260 6.440 6.450     B9.5V 94 0
123 V* V2314 Oph dS* 17 44 03.6257455416 +06 03 42.497438940   7.76 7.43     A2 34 0
124 HD 160928 ** 17 44 42.0095149680 -42 43 45.550054236   6.027 5.871     A3IVn 47 0
125 * gam Oph PM* 17 47 53.5605898827 +02 42 26.204838837 3.83 3.80 3.75 3.71 3.71 A1VnkA0mA0 411 0
126 * phi Dra a2* 18 20 45.43224 +71 20 16.1499   4.15 4.22     B8V 200 0
127 HD 169009 * 18 23 02.1094394400 -10 13 08.238885060   6.443 6.313     B9III 57 0
128 * eps Sgr PM* 18 24 10.31840 -34 23 04.6193   1.82 1.81     B9IVp_lB? 221 1
129 HD 169142 Ae* 18 24 29.7799891464 -29 46 49.327400568   8.42 8.16     F1VekA3mA3_lB? 535 0
130 HD 168947 dS* 18 24 30.0555469896 -44 11 56.681839752   8.35 8.11     F0VkA3mA3_lB 29 0
131 HD 168740 dS* 18 25 31.6299933048 -63 01 17.529458664   6.313 6.122     A8VkA2mA2_lB 78 0
132 HD 170680 * 18 31 26.2978449720 -18 24 09.713977668   5.126 5.117     B9/9.5V 87 0
133 * alf Lyr dS* 18 36 56.33635 +38 47 01.2802 0.03 0.03 0.03 0.07 0.10 A0V 2787 1
134 HD 174005 * 18 48 39.4931934120 -06 00 15.524947980   6.717 6.494     A7VkA2mA2_lB 38 0
135 HD 175445 * 18 55 33.2829853224 -02 18 23.649417144   7.90 7.79     A2Va 22 1
136 * 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
137 HD 179791 V* 19 13 44.0319885648 +05 30 56.198549232 6.69 6.58 6.49     A3V 56 0
138 HD 181470 SB* 19 19 01.1490176496 +37 26 43.241751420 6.190 6.260 6.260     A0III 88 0
139 * c Aql dS* 19 29 00.9869402808 +01 57 01.616825124   5.865 5.783     A0IVp 188 0
140 HD 183007 SB* 19 29 23.8434913344 -43 26 42.702536328   5.899 5.701     A7VkA2mA5 61 0
141 HD 184190 * 19 34 55.2809531856 -39 47 26.248329312   10.02 9.74     A7/9s(w) 20 0
142 HD 184779 * 19 37 59.4732643224 -43 54 28.031912172   9.17 8.90     F0VkA5mA5(_lB) 28 0
143 V* V505 Sgr SB* 19 53 06.3860220576 -14 36 11.488005972   6.62 6.48     A2IV-V 213 0
144 * phi Aql SB* 19 56 14.2519125984 +11 25 25.401080424   5.283 5.278     A1IV 140 0
145 HD 188164 SB* 19 58 52.9850408208 -68 45 45.297814464   6.529 6.374     A6VkA2mA3 48 0
146 HD 191850 V* 20 13 54.5079591960 -46 33 23.192406180   9.87 9.69 9.6 10.953 A9VkA3mA3_lB 32 0
147 * b03 Cyg dS* 20 14 32.0323540824 +36 48 22.700909124 5.10 5.11 4.99 4.79 4.72 A2V 284 0
148 HD 228509 * 20 14 35.5869605040 +37 34 51.077333388   9.450 9.240     A3V 14 0
149 HD 193281 * 20 20 27.8803232880 -29 11 49.972752276   6.76 6.64 7.50   A2IV-V 105 0
150 HD 196821 V* 20 39 10.6488328200 +21 49 02.792407836   6.027 6.075     A0III 59 0
151 CD-62 1338A PM* 20 51 38.5075523160 -62 25 45.585188364   6.35 6.21 6.55   A3IV(n) 74 0
152 CD-62 1338B PM* 20 51 38.8562846352 -62 25 45.255818352   6.74 6.56     A3III 38 0
153 HD 200841 * 21 04 42.6234504936 +41 00 28.774035000   8.33 8.28     A 28 0
154 * chi Cap PM* 21 08 33.6250217616 -21 11 37.214550420   5.320 5.316     A0Van 70 0
155 HD 201019 Pe* 21 09 04.5570995568 -55 17 36.300432228   8.66 8.38     F3VkA5mA5_lB? 38 0
156 HD 204041 PM* 21 25 51.5848015320 +00 32 03.634403820   6.593 6.450     A1Vb 114 0
157 HD 204754 V* 21 28 52.7390472960 +55 25 07.347832464   6.220 6.127     B8III 52 0
158 HD 204965 * 21 30 20.3307128760 +52 57 28.784301300   6.079 6.007     A3V 37 0
159 * 15 Peg PM* 21 52 29.9168018496 +28 47 36.750679764 5.82 5.95 5.53     F2V 250 0
160 HD 210111 dS* 22 08 42.6440819592 -33 07 32.494799028   6.564 6.386     A9VkA2mA2_lB 88 0
161 * tet Peg PM* 22 10 11.9886121211 +06 11 52.517717538 3.72 3.62 3.55 3.50 3.46 A1Va 194 0
162 HD 212150 * 22 18 20.4356149776 +76 29 16.881679608 6.550 6.640 6.630     A1Vn 36 0
163 * gam Aqr PM* 22 21 39.3715681296 -01 23 14.457098796 3.65 3.791 3.834     A0V 180 0
164 V* DR Gru dS* 22 34 18.6654524952 -54 17 52.521494856   7.62 7.42     F0VkA2.5mA2.5_lB 26 0
165 * 9 Lac PM* 22 37 22.4179184437 +51 32 42.435680257 4.98 4.87 4.63 4.41 4.27 A9VkA7mA6 83 0
166 HD 216847 * 22 57 22.0095354336 -56 52 30.696690864   7.29 7.06     A7V 33 0
167 * 2 And ** 23 02 36.38176 +42 45 28.0628           A1V 169 0
168 HD 218396 El* 23 07 28.7157209544 +21 08 03.310767492   6.21 5.953     F0+VkA5mA5 1285 0
169 * tau Peg dS* 23 20 38.2462291728 +23 44 25.278232056   4.745 4.580     A5Vp_lB 189 0
170 * 97 Aqr ** 23 22 39.17113 -15 02 21.6245   5.43 5.22     A3V 112 0
171 * 15 And dS* 23 34 37.5368337288 +40 14 11.182658856   5.652 5.563 6.91   A1Va 141 0
172 HD 222303 * 23 38 53.5106827176 +66 29 33.307111860   9.73 9.16     A 14 0
173 * 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

To bookmark this query, right click on this link: simbad:objects in 2017MNRAS.466..546M and select 'bookmark this link' or equivalent in the popup menu