2014A&A...567A..67P


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.04CEST13:48:36

2014A&A...567A..67P - Astronomy and Astrophysics, volume 567A, 67-67 (2014/7-1)

Investigating the possible connection between λ Bootis stars and intermediate Population II type stars.

PAUNZEN E., ILIEV I.Kh., FOSSATI L., HEITER U. and WEISS W.W.

Abstract (from CDS):

The λ Bootis stars are located at the upper main sequence of the Hertzsprung-Russell diagram and exhibit a peculiar abundance pattern. The light elements (C, N, O, and S) present solar abundances whereas all other elements are moderately to strongly underabundant. It has not yet been determined whether that abundance pattern is intrinsic, or is restricted to the stellar surface. If we follow the hypothesis that the λ Bootis stars are intrinsically metal-weak, then there should be a connection with the intermediate Population II and F-weak objects. Such a possible affinity has not been previously investigated. We present detailed elemental abundances, including those of the light elements carbon and oxygen, for 38 bright intermediate Population II and F-weak objects. In addition, we investigate the kinematic characteristics of the groups. From photometric, spectroscopic, and kinematic data, there is no distinction between the intermediate Population II and F-weak type stars. We therefore conclude that the two groups are identical. However, it is possible to distinguish the λ Bootis stars from the intermediate Population II stars on the basis of elemental abundances, though not in terms of their kinematics. The λ Bootis stars seem to be distinct from the intermediate Population II group. Further asteroseismologic investigations and analyses of spectroscopic binary systems are needed to strengthen this conclusion.

Abstract Copyright:

Journal keyword(s): stars: abundances - stars: chemically peculiar - stars: early-type - stars: Population II

Simbad objects: 69

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Number of rows : 69

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 HD 319 PM* 00 07 46.9004138978 -22 30 30.805804687   6.055 5.923     A1VbmA2_lB 95 1
2 * 6 Cet PM* 00 11 15.8508998160 -15 28 04.740699873 5.35 5.38 4.89     F8VFe-0.8CH-0.5 284 0
3 * 14 Cet PM* 00 35 32.8335385951 -00 30 20.198144650   6.368 5.936     F5V 117 0
4 * phi02 Cet PM* 00 50 07.5885892159 -10 38 39.584811061   5.69 5.19     F7V 244 0
5 V* BS Tuc dS* 01 08 03.9684578139 -61 52 17.819432212   7.71 7.45     hF0mA1_lB 87 0
6 * 38 Cet PM* 01 14 49.1720452098 -00 58 25.663213221   6.12 5.69     F3V 102 0
7 * pi. Psc PM* 01 37 05.9185909801 +12 08 30.265153751   5.880 5.535     F0V 87 0
8 V* BD Phe dS* 01 50 54.4351104603 -50 12 22.093636860   6.080 5.929     F0VkA2mA2_lB 95 0
9 HD 12414 PM* 02 01 52.4696160866 +07 51 51.727626827   7.54 7.06     F2 40 0
10 * eta Ari PM* 02 12 48.0856782200 +21 12 39.577562642       5.0   F5V 173 0
11 HD 15165 dS* 02 26 45.6479225723 +10 33 55.067355855   6.94 6.69     F0IV 85 0
12 HD 16626 PM* 02 42 35.7981998600 +61 35 36.714160667   7.397 7.013     F2V 26 1
13 * tau Per Al* 02 54 15.4684102508 +52 45 44.885218477 5.17 4.71 3.96 3.33 2.89 G8III+A7V 156 0
14 HD 17948 PM* 02 55 56.9207493120 +61 31 16.097176885   6.001 5.584     F5V 84 0
15 * 32 Tau PM* 03 56 52.0771381069 +22 28 40.702936741   5.946 5.617     F2IVs 54 0
16 HD 25457 TT* 04 02 36.7451443573 -00 16 08.118566607   5.88 5.38     F7V 237 0
17 HD 26015 ** 04 07 41.98340 +15 09 46.0260           F3V 142 0
18 * h Tau dS* 04 19 57.7045549280 +14 02 06.739482030   5.856 5.568 5.407 5.250 F0IV 205 0
19 HD 27524 PM* 04 21 31.6489558768 +21 02 23.558359736   7.215 6.779 6.531 6.283 F5V 153 0
20 HD 27808 PM* 04 24 14.5735497717 +21 44 10.484870739   7.646 7.125 6.830 6.550 F8V 177 0
21 * 51 Eri PM* 04 37 36.1323118067 -02 28 24.778826936   5.486 5.209     F0IV 169 0
22 * pi.01 Ori PM* 04 54 53.7287660 +10 09 02.995200   4.723 4.648     A0Va_lB 237 0
23 * 68 Eri PM* 05 08 43.6984486634 -04 27 22.340521388   5.546 5.119     F5.5VkF4mF2 202 0
24 HD 65123 ** 07 57 16.29328 +01 07 37.2936   6.85   6.1   F7V 101 0
25 * chi Cnc PM* 08 20 03.8606964664 +27 13 03.746404123   5.61   4.8   F6V 280 0
26 * 50 Cnc PM* 08 46 56.0191877567 +12 06 35.830526746   5.992 5.885 7.20 5.76 A1Vp 80 0
27 V* HZ Vel dS* 08 49 52.3521085534 -39 08 29.770890153   6.602 6.368     A2/3II/III 62 0
28 HD 84123 PM* 09 44 06.8765461366 +42 03 03.131298842   7.135 6.838     A4III 49 0
29 * 33 LMi * 10 31 51.3746360193 +32 22 46.412107377   6.001 5.905     A0Va- 63 0
30 HD 101108 * 11 38 19.3665601704 +38 45 16.899688742   9.05 8.87     A5_lB 38 0
31 HD 106223 PM* 12 13 16.8985951261 +30 16 58.950109119 7.64 7.72 7.44     hF3VkA3mA3_lB 86 0
32 V* FG Vir dS* 12 14 15.4567370777 -05 42 59.750421714   6.807 6.558     A8/9V 207 0
33 HD 107233 PM* 12 19 55.6449203485 -48 18 59.468148848   7.60 7.36     hF0VakA1mA1_lB 36 0
34 HD 110093 * 12 34 51.3508701975 +85 43 55.899722487   7.45 7.21     F0 20 0
35 * rho Vir dS* 12 41 53.0567802922 +10 14 08.229084878 5.00 4.97 4.88 4.80 4.78 A0Va_lB 207 0
36 V* DT CVn dS* 12 50 10.7399345982 +37 31 00.980973965   6.025 5.872     A5Vp_lB 89 0
37 NAME NGP reg 12 51 26.275 +27 07 41.70           ~ 1020 0
38 * 53 Vir PM* 13 12 03.5439044831 -16 11 54.977342934   5.50 5.04     F5.5V 125 0
39 V* FQ Boo dS* 13 49 44.1555631872 +08 24 31.089806068   6.717 6.604     hA5VkA2mA2_lB 42 0
40 * lam Boo dS* 14 16 23.0187965 +46 05 17.900526 4.31 4.26 4.18 4.16 4.13 A0Va_lB 325 0
41 HD 125111 PM* 14 16 24.2749465571 +39 44 40.956828797   6.738 6.376     F2IV 55 0
42 HD 125276 PM* 14 19 00.8956424822 -25 48 55.531887272   6.37 5.87     F9VFe-1.5CH-0.7 83 0
43 * sig Boo PM* 14 34 40.8171808483 +29 44 42.463685978 4.76 4.84 4.47 4.13 3.94 F4VkF2mF1 570 0
44 HD 135208 PM* 15 14 28.1167942953 -18 25 42.735862971   7.173 6.743     F5V 34 0
45 * 8 Ser PM* 15 23 43.7097834829 -01 01 20.586414090   6.355 6.105     A5II/III 67 0
46 V* HR Lib dS* 15 56 33.3735361896 -14 49 45.972376397   6.345 6.117     A2Ib/II 104 0
47 * sig Ser PM* 16 22 04.3482463818 +01 01 44.548439598       4.6   A9Ib/II 134 0
48 * 47 Oph SB* 17 26 37.8809423 -05 05 11.749992 4.90 4.93 4.54 4.16 3.95 F3V 147 0
49 NAME Gal Center reg 17 45 40.04 -29 00 28.1           ~ 11533 0
50 V* V346 Pav dS* 18 25 31.6299481485 -63 01 17.532599707   6.313 6.122     A8VkA2mA2_lB 63 0
51 HD 170680 * 18 31 26.2981687662 -18 24 09.706451275   5.126 5.117     B9/9.5V 76 0
52 * c Aql dS* 19 29 00.9870438377 +01 57 01.618441082   5.865 5.783     A0IVp 163 0
53 * 42 Aql PM* 19 37 47.3176956947 -04 38 51.507178097   6.07 5.68     F3IV/V 65 0
54 HD 189712 * 20 01 15.8948508591 +05 38 53.693580365 7.820 7.870 7.450     F5 33 0
55 HD 191841 PM* 20 12 15.3251340 -08 05 32.391701   7.75 7.31     F5V 35 1
56 * b03 Cyg dS* 20 14 32.0319919055 +36 48 22.684605093 5.10 5.11 4.99 4.79 4.72 A2V 240 0
57 HD 193256 * 20 20 26.5741252340 -29 11 28.761537820   7.703 7.525 8.49   A8VnkA3mA3(_lB) 61 0
58 HD 193281 * 20 20 27.8805474206 -29 11 49.975108388   6.76 6.64 7.50   A2IV-V 90 0
59 * 15 Del PM* 20 49 37.7673480167 +12 32 42.456547015   6.421 5.991     F5V 80 0
60 HD 198160 PM* 20 51 38.5079641449 -62 25 45.594366275   6.347 6.207 6.55   A3IV(n) 67 0
61 V* EM Aqr dS* 20 55 08.2724057163 -01 22 22.904694657   6.811 6.533     A9/F0V 72 0
62 HD 204041 PM* 21 25 51.5846178730 +00 32 03.619939380   6.593 6.450     A1Vb 93 0
63 HD 208362 PM* 21 54 36.7173960603 +47 09 19.119136610   7.80 7.45     F0 22 0
64 HD 210111 dS* 22 08 42.6438955365 -33 07 32.498239929   6.564 6.386     A9VkA2mA2_lB 71 0
65 HD 211575 ** 22 18 04.2721420813 -00 14 15.560320789   6.817 6.379     F3V 65 0
66 * 6 And PM* 23 10 27.2374579520 +43 32 38.433649106   6.38   5.6   F5V 104 0
67 * 15 And dS* 23 34 37.5365247800 +40 14 11.179472901   5.652 5.563 6.91   A1Va 124 0
68 * iot Psc PM* 23 39 57.0413764 +05 37 34.647529 4.640 4.620 4.120 3.68 3.37 F7V 576 0
69 HD 223346 * 23 48 49.3667426650 +02 12 51.887196758   6.910 6.457     F5V 52 0

    Equat.    Gal    SGal    Ecl

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2020.07.04-13:48:37

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