2017AJ....153...39C

Query : 2017AJ....153...39C

2017AJ....153...39C - Astron. J., 153, 39-39 (2017/January-0)

Utilizing synthetic visible spectra to explore the physical basis for the classification of Lambda Bootis stars.

CHENG K.-P., NEFF J.E., JOHNSON D.M., TARBELL E.S., ROMO C.A., GRAY R.O. and CORBALLY C.J.

Abstract (from CDS):

Since the peculiar nature of Lambda Bootis was first noticed in 1943, the Lambda Boo stars have been recognized as a group of peculiar A-type stars. They are Population I dwarfs that show deficiencies of iron-peak elements (up to 2 dex), but have near-solar C, N, O, and S abundances. In a previous paper, we used both observed and synthetic ultraviolet spectra to demonstrate that the C i 1657 A/Al ii 1671 A equivalent width ratio can help distinguish between Lambda Boo stars and other metal-weak stars hotter than 8000 K. In this paper, using observed and synthetic visible (4000-6800 A) spectra, we demonstrate that the C i 5052.17 A/Mg ii 4481 A equivalent width ratio can be used as a quantitative diagnostic for cooler Lambda Boo stars.

Abstract Copyright: © 2017. The American Astronomical Society. All rights reserved.

Journal keyword(s): stars: abundances - stars: chemically peculiar - stars: chemically peculiar

Simbad objects: 115

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Number of rows : 115
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 319 PM* 00 07 46.8995868600 -22 30 30.805174800   6.055 5.923     A1VbmA2_lB 112 0
2 HD 4158 * 00 43 54.0507025992 -20 23 59.222823468   9.76 9.54     F2VkA1.5mA1.5_lB 41 0
3 V* BS Tuc dS* 01 08 03.9681734664 -61 52 17.817500280   7.71 7.45     hF0mA1_lB 100 0
4 HD 7908 * 01 18 25.3734538512 -23 00 47.600538120   7.569 7.302     F0VmA3_lB 54 0
5 V* BD Phe dS* 01 50 54.4352128992 -50 12 22.092503544   6.080 5.929     F0VkA2mA2_lB 110 0
6 V* CV Phe dS* 02 12 47.0859332544 -44 29 20.456479752   8.11 7.83     F1VkA8mA8(_lB) 33 0
7 HD 15165 dS* 02 26 45.6478667280 +10 33 55.070566704   6.94 6.69     F0IV 97 0
8 * tet Per PM* 02 44 11.9866154103 +49 13 42.414669174 4.62 4.62 4.11 3.67 3.37 F8V 428 0
9 HD 21335 ** 03 27 03.2348403240 +18 45 23.558435856   6.72 6.57     A3V 72 0
10 * 20 Eri a2* 03 36 17.4041095200 -17 28 01.472307996 4.61 5.10 5.23     B8/9III 181 0
11 HD 23392 * 03 44 32.7248403456 -08 35 12.466693284   8.29 8.24     A0Va-_lB 30 0
12 HD 23948 * 03 49 56.5953892752 +24 20 56.372246016   7.61 7.54   7.48 A0 108 0
13 V* DO Eri a2* 03 55 16.1313315312 -12 05 56.727712752 6.35 6.32 6.00     A9VpSrEuCr 411 0
14 V* EX Eri dS* 04 46 25.7495143440 -28 05 14.805163104   6.347 6.173     A7VkA3mA3 125 0
15 * pi.03 Ori PM* 04 49 50.4112051485 +06 57 40.600622266 3.620 3.630 3.190 2.77 2.51 F6V 601 0
16 * pi.02 Ori * 04 50 36.7224881321 +08 54 00.652210041 4.39 4.36 4.35 4.29 4.29 A1Vn 193 0
17 * pi.01 Ori PM* 04 54 53.7280989194 +10 09 03.003446941   4.723 4.648     A0Va_lB 268 0
18 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
19 * 16 Cam PM* 05 23 27.8426747304 +57 32 39.837146280 5.150 5.230 5.250   5.23 A0Vne 67 0
20 V* V1649 Ori dS* 05 23 31.0655908752 +05 19 23.111389848   6.455 6.334     hA3VamA1_lB 50 0
21 HD 36726 * 05 33 51.7278163992 -00 04 36.342051096   8.91 8.82     hA5VkA0mA0_lB 47 1
22 HD 294253 HS* 05 36 41.7835166016 -03 30 12.476798712   9.675 9.637 9.974   A0VakB8.5mB9(_lB) 40 1
23 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
24 V* V1790 Ori dS* 05 40 24.2915301336 -00 46 16.753504332   10.8 10.8     A0 38 0
25 HD 37886 * 05 41 32.0065124640 -02 58 26.602064364   8.956 8.979 9.67 9.51 B8III 37 0
26 HD 41580 * 06 06 28.0434611568 +10 45 01.012449456   7.13 7.19     A0 34 0
27 HD 56405 * 07 16 14.5526564520 -15 35 08.486158380   5.519 5.447     A1V 79 0
28 * 21 Lyn PM* 07 26 42.8522129445 +49 12 41.497452754   4.594 4.610     A0.5Vs 121 0
29 * rho Gem PM* 07 29 06.71887 +31 47 04.3773 4.48 4.50 4.18 3.86 3.67 F1V 338 0
30 V* DD Lyn dS* 07 55 40.8273346368 +35 24 45.653471280   6.478 6.221     A3p 78 0
31 HD 68758 PM* 08 12 45.9007326816 -29 54 38.718208620   6.576 6.519     A1V 33 0
32 * 30 Mon PM* 08 25 39.6318651278 -03 54 23.137987255 3.85 3.88 3.90 3.87 3.92 A0Va 289 0
33 * 50 Cnc PM* 08 46 56.0189914848 +12 06 35.830080180   5.992 5.885 7.20 5.76 A1Vp 99 0
34 HD 75654 dS* 08 49 52.3521972168 -39 08 29.771430000   6.602 6.368     A2/3II/III 78 0
35 * kap Cnc a2* 09 07 44.8095541176 +10 40 05.519586828 4.70 5.13 5.24     B8IIImnp 376 0
36 HD 79108 PM* 09 12 12.8807934720 +03 52 01.121272932   6.127 6.131     A0V 78 0
37 * tet Hya SB* 09 14 21.8600711562 +02 18 51.551915906   3.82   3.9   B9.5V+DA1.6 224 0
38 * 38 Lyn PM* 09 18 50.6435791217 +36 48 09.345084336   3.96 3.92   3.81 A1V 149 0
39 * 7 Sex PM* 09 52 12.1641996384 +02 27 14.865250500 5.90 5.98   6.0   A0III/IV 120 0
40 V* GM Leo dS* 10 04 08.3785722672 +11 37 42.647835324 7.330 7.310 7.130     A8VkA0mA0.5_lB 41 0
41 * 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
42 HD 89353 pA* 10 18 07.5899342712 -28 59 31.195183524   5.76 5.53     B9.5Ib/II 315 0
43 * 42 Leo V* 10 21 50.3029369032 +14 58 32.782960380   6.160 6.163     A1V 50 0
44 * 33 LMi Em* 10 31 51.3753968952 +32 22 46.405276428   6.001 5.905     A0Va- 77 0
45 * 37 UMa PM* 10 35 09.6937360824 +57 04 57.487315116   5.481 5.148     F2V 194 0
46 * 55 UMa SB* 11 19 07.8861142632 +38 11 08.135935332   4.90 4.80     A2V 142 0
47 HD 101412 Be* 11 39 44.4564911064 -60 10 27.719780304   9.465 9.288     A3VaekA0mA0_lB 151 0
48 * bet Leo dS* 11 49 03.57834 +14 34 19.4090 2.30 2.22 2.13 2.08 2.06 A3Va 605 1
49 * gam UMa Em* 11 53 49.8473166 +53 41 41.135025 2.440 2.450 2.440 2.44 2.47 A0V 417 0
50 * b Vir * 11 59 56.9134992240 +03 39 18.736620984   5.346 5.345   5.34 A0V 73 0
51 V* II Vir dS* 12 10 27.1880699112 -07 46 26.311095696   6.73 6.54     A3III 33 0
52 HD 106223 Em* 12 13 16.8983653416 +30 16 58.946364228 7.64 7.72 7.44     hF3VkA3mA3_lB 94 0
53 HD 107233 PM* 12 19 55.6448625816 -48 18 59.471119476   7.60 7.36     F0VkA3mA2_lB 47 0
54 * 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
55 * 27 Vir dS* 12 41 34.3919383824 +10 25 34.568504040   6.408 6.215     A6Vp 77 0
56 * 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
57 * 34 Vir PM* 12 47 13.6388307744 +11 57 29.113830720   6.225 6.090   5.98 A4V(n) 58 0
58 V* DT CVn dS* 12 50 10.7400521424 +37 31 00.979591260   6.025 5.872     A5Vp_lB 101 0
59 V* MO Hya dS* 12 51 57.8968126608 -26 44 17.772380448   6.358 6.141     F0VkA1mA1_lB 139 0
60 * 78 UMa ** 13 00 43.69949 +56 21 58.8102   5.29 4.93     F2V 283 0
61 * 25 CVn ** 13 37 27.62782 +36 17 41.6337           A7III+A8V: 150 0
62 HD 119288 PM* 13 42 12.7604652209 +08 23 18.227677011   6.58   5.9   F2V 130 0
63 V* FQ Boo dS* 13 49 44.1554383104 +08 24 31.089742272   6.717 6.604     hA5VkA2mA2_lB 51 0
64 V* QT Vir dS* 13 52 09.3005176752 +06 00 04.845199464   8.76 8.51     hF0VkA6mA6_lB 31 0
65 * alf Dra SB* 14 04 23.3575968507 +64 22 33.130623243 3.520 3.640 3.680     A0III 290 0
66 * 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
67 HD 125489 ** 14 19 40.9504184928 +00 23 03.603726852   6.377 6.179     A7Vn 57 0
68 * tet Boo PM* 14 25 11.7969501601 +51 51 02.677224089 4.57 4.56 4.05 3.64 3.39 F7V 397 0
69 * sig Boo PM* 14 34 40.8173867232 +29 44 42.457673940 4.76 4.84 4.47 4.13 3.94 F4VkF2mF1 632 0
70 * 55 Hya * 14 47 22.5556927680 -25 37 27.359626548   5.562 5.609     B9IV/V 83 0
71 HD 130767 * 14 49 28.7085118464 +19 30 37.316208276   6.94 6.90   6.85 A0Va_lB 32 0
72 HD 132145 * 14 57 03.5936192400 +21 33 19.510507368   6.521 6.504     A1V 59 0
73 * k Boo PM* 15 05 25.8344927952 +48 09 03.492761544   5.568 5.577     A0Vs 84 0
74 * c Boo PM* 15 07 18.0659348352 +24 52 09.099406380 5.34 5.36 4.93 4.53 4.32 F5V 374 0
75 HD 139614 Or* 15 40 46.3820275416 -42 29 53.538761832   8.47 8.24     A9VekA5mA5(_lB) 243 0
76 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
77 * b Ser ** 15 51 15.5919760102 -03 05 25.822526196   5.23 5.10     A2IV-Vn 121 0
78 * gam Ser PM* 15 56 27.1826577018 +15 39 41.809580382 4.31 4.34 3.84 3.37 3.13 F6V 586 0
79 V* HR Lib dS* 15 56 33.3736378344 -14 49 45.972944112   6.345 6.117     F1VskA1.5mA1.5_lB 127 0
80 HD 142666 TT* 15 56 40.0221861696 -22 01 40.005872148 9.41 9.37 8.82 8.31 8.01 F0V_sh 306 0
81 V* IN Lup dS* 15 59 10.9039194264 -38 44 54.944322756   7.46 7.17     F2VkA3mA3_lB? 51 0
82 * 11 Sco * 16 07 36.4153307712 -12 44 43.464533568   5.77 5.77     B9V 62 0
83 HD 145788 * 16 12 56.5863101760 -04 13 14.831850036   6.367 6.255     A0V 63 0
84 * eps Her SB* 17 00 17.3733587483 +30 55 35.055213817 3.80 3.91 3.92 3.93 3.97 A0V 177 0
85 HD 153747 dS* 17 02 53.8269014280 -38 27 36.818859204   7.54 7.42     A7VkA0mA0_lB 59 1
86 HD 158352 PM* 17 28 49.6547862288 +00 19 50.249640432   5.644 5.412     A8Vp 135 0
87 HD 159082 SB* 17 32 14.8801753080 +11 55 48.177391296 6.260 6.440 6.450     B9.5V 94 0
88 HD 160928 ** 17 44 42.0095149680 -42 43 45.550054236   6.027 5.871     A3IVn 47 0
89 * gam Oph PM* 17 47 53.5605898827 +02 42 26.204838837 3.83 3.80 3.75 3.71 3.71 A1VnkA0mA0 411 0
90 HD 169009 * 18 23 02.1094394400 -10 13 08.238885060   6.443 6.313     B9III 57 0
91 * eps Sgr PM* 18 24 10.31840 -34 23 04.6193   1.82 1.81     B9IVp_lB? 221 1
92 HD 168740 dS* 18 25 31.6299933048 -63 01 17.529458664   6.313 6.122     A8VkA2mA2_lB 78 0
93 HD 170680 * 18 31 26.2978449720 -18 24 09.713977668   5.126 5.117     B9/9.5V 87 0
94 HD 174005 * 18 48 39.4931934120 -06 00 15.524947980   6.717 6.494     A7VkA2mA2_lB 38 0
95 HD 175445 * 18 55 33.2829853224 -02 18 23.649417144   7.90 7.79     A2Va 22 1
96 HD 177120 ** 19 04 14.19485 -22 53 47.4664           A1III-IV(e) 21 0
97 * 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
98 HD 179791 V* 19 13 44.0319885648 +05 30 56.198549232 6.69 6.58 6.49     A3V 56 0
99 * c Aql dS* 19 29 00.9869402808 +01 57 01.616825124   5.865 5.783     A0IVp 188 0
100 * alf Aql dS* 19 50 46.99855 +08 52 05.9563 1.07 0.98 0.76 0.62 0.49 A7Vn 919 1
101 V* V505 Sgr SB* 19 53 06.3860220576 -14 36 11.488005972   6.62 6.48     A2IV-V 213 0
102 * b03 Cyg dS* 20 14 32.0323540824 +36 48 22.700909124 5.10 5.11 4.99 4.79 4.72 A2V 284 0
103 HD 193256 * 20 20 26.5730016024 -29 11 28.700728368   7.703 7.525 8.49   A8VnkA3mA3(_lB) 67 0
104 * alf Del ** 20 39 38.2796355689 +15 54 43.776032197 3.550 3.740 3.800 3.77 3.81 B9IV 289 0
105 CD-62 1338A PM* 20 51 38.5075523160 -62 25 45.585188364   6.35 6.21 6.55   A3IV(n) 74 0
106 HD 204041 PM* 21 25 51.5848015320 +00 32 03.634403820   6.593 6.450     A1Vb 114 0
107 * 15 Peg PM* 21 52 29.9168018496 +28 47 36.750679764 5.82 5.95 5.53     F2V 250 0
108 HD 210111 dS* 22 08 42.6440819592 -33 07 32.494799028   6.564 6.386     A9VkA2mA2_lB 88 0
109 * tet Peg PM* 22 10 11.9886121211 +06 11 52.517717538 3.72 3.62 3.55 3.50 3.46 A1Va 194 0
110 * eps Cep SB* 22 15 02.1972987635 +57 02 36.846735569   4.47   4.0   F0V(Sr) 237 0
111 * gam Aqr PM* 22 21 39.3715681296 -01 23 14.457098796 3.65 3.791 3.834     A0V 180 0
112 * 9 Lac PM* 22 37 22.4179184437 +51 32 42.435680257 4.98 4.87 4.63 4.41 4.27 A9VkA7mA6 83 0
113 HD 218396 El* 23 07 28.7157209544 +21 08 03.310767492   6.21 5.953     F0+VkA5mA5 1285 0
114 * 15 And dS* 23 34 37.5368337288 +40 14 11.182658856   5.652 5.563 6.91   A1Va 141 0
115 * iot Psc PM* 23 39 57.0406036160 +05 37 34.653911951 4.640 4.620 4.120 3.68 3.37 F7V 641 0

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