2002ApJ...579..437M


Query : 2002ApJ...579..437M

2002ApJ...579..437M - Astrophys. J., 579, 437-445 (2002/November-1)

Lithium abundances in wide binaries with solar-type twin components.

MARTIN E.L., BASRI G., PAVLENKO Y. and LYUBCHIK Y.

Abstract (from CDS):

We present high-resolution spectroscopic observations of the Li I resonance line in a sample of 62 stars that belong to 31 common proper motion pairs with twin F- or G-type components. Photospheric abundances of lithium were derived by spectral synthesis analysis. For seven of the pairs, we have measured large lithium abundance differences. Eleven other pairs have components with similar lithium abundances. We cannot determine if the remaining 13 pairs have lithium differences because we did not detect the Li I lines, and hence we can only provide upper limits to the abundances of both stars. Our results demonstrate that twin stars do not always share the same lithium abundances. Lithium depletion in solar-type stars does not only depend on age, mass, and metallicity. This result is consistent with the spread in lithium abundances among solar-type stars in the solar-age open cluster M67. Our stars are brighter than the M67 members of similar spectral type, making them good targets for detailed follow-up studies that could shed light on the elusive mechanism responsible for the depletion of lithium during the main-sequence evolution of the Sun and solar-type stars.

Abstract Copyright:

Journal keyword(s): Stars: Binaries: Visual - Stars: Abundances - Stars: Evolution - Stars: Fundamental Parameters - Stars: Late-Type

Simbad objects: 67

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Number of rows : 67
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 HD 224984 PM* 00 02 21.6092395704 +10 47 07.309747140   9.05 8.50     F8 19 0
2 HD 224994 ** 00 02 25.3039595118 +10 46 34.706371404   9.35 8.73     G0 27 0
3 HD 4552 PM* 00 47 41.1613326792 +12 52 45.408055116   9.45 8.91     F8 16 0
4 BD+12 90 PM* 00 47 43.6451376936 +12 52 19.761928788   9.80 9.18     G0 14 0
5 AG+51 117 PM* 01 10 07.1684121912 +51 44 33.938491416   9.02 8.53     F5V 37 0
6 HD 6872 PM* 01 10 07.4873424600 +51 44 48.022476468   8.54 8.09     F4V 46 0
7 HD 8610 ** 01 25 34.27737 +31 33 01.4844           F8 29 0
8 HD 8624 SB* 01 25 38.5499166648 +31 32 46.194343548       7.5   G0 40 0
9 HD 9518 PM* 01 35 01.5174592680 +60 46 45.341608908   9.07 8.55     F6V 20 0
10 BD+60 271 PM* 01 35 07.4582915112 +60 46 53.798355084   9.59 9.07     F6V 16 0
11 HD 31208 PM* 04 54 16.6452522708 +07 22 22.925103901   9.03   7.7   K1 32 0
12 HD 39274 PM* 05 52 46.3383885792 +29 46 04.470804768   9.61 9.05     G0 18 1
13 HD 39275 PM* 05 52 47.3979651201 +29 46 12.792296172   9.97 9.11     G0 15 0
14 HD 54046 PM* 07 08 00.2417408376 +15 31 42.947179536   8.36   7.5   G0V 57 0
15 HD 54100 PM* 07 08 11.9819833608 +15 31 15.052831176   8.25   7.3   F8 50 0
16 NGC 2682 OpC 08 51 23 +11 48.8           ~ 2183 0
17 BD+28 1697 PM* 09 08 23.8694236920 +27 32 07.586337408   8.76 8.26     G0V 21 0
18 BD+28 1698 PM* 09 08 27.1563195096 +27 32 35.267711244   8.80 8.27     G0V 16 0
19 BD+15 2079 PM* 09 36 13.2944037864 +14 35 47.795742924   9.38 8.74     G0 6 0
20 BD+15 2080 SB* 09 36 18.5308694880 +14 35 17.958332976   9.73 9.01     G5 8 0
21 BD+34 2091B PM* 10 09 12.1414491216 +33 20 00.639647016   10.36 9.81     G0 6 0
22 BD+34 2091 PM* 10 09 13.4178265752 +33 20 24.123338736   10.30 9.75 9.72   G0 4 0
23 HD 92222B PM* 10 39 27.0446115144 +31 42 03.449254608   10.09 9.30     ~ 24 0
24 HD 92222A PM* 10 39 27.8873112000 +31 42 17.981328564   10.05 9.31     ~ 25 1
25 BD+13 2311B SB* 10 49 35.9416929192 +12 55 46.699387716   10.137 9.636     F8 26 0
26 BD+13 2311 PM* 10 49 37.1388528888 +12 55 45.164487972   9.86 9.38 12.7   F8 33 0
27 * ksi UMa B SB* 11 18 10.8360115405 +31 31 44.821690914   5.41 4.77 4.4   G2V 334 1
28 * ksi UMa A SB* 11 18 10.901164 +31 31 44.97910   4.79 4.25     F8.5:V 307 1
29 HD 98744 PM* 11 22 07.0706206560 +37 05 15.151579044   9.69 9.20     G0 35 0
30 HD 98745 ** 11 22 07.3206611882 +37 04 52.148977856   9.972 9.446 9.468   G0 27 0
31 HD 111484A PM* 12 49 34.8209755392 +03 49 05.557995804   9.38 8.83     G0 17 0
32 HD 111484B PM* 12 49 34.9996039392 +03 49 14.153379852   9.35 8.808     G0 23 0
33 HD 124257B PM* 14 10 59.8517024520 +50 15 05.685064344       9.3   ~ 18 0
34 HD 124257 PM* 14 11 00.9881659680 +50 15 08.329144140       8.8   G5 20 0
35 HD 124913B PM* 14 14 11.1510675792 +59 14 24.294309108   10.35 9.85     G5 8 0
36 HD 124913A PM* 14 14 11.8663303176 +59 14 34.145046024   10.02 9.57     G5 7 0
37 BD+02 2820A PM* 14 26 35.1547127664 +02 07 44.408374176   10.87 10.11 10.74   G5 6 0
38 AG+34 1339 PM* 14 32 30.6945492792 +34 42 13.789907568   11.33 10.65     K0 8 0
39 AG+34 1340 PM* 14 32 31.5753349590 +34 42 09.486649484   10.95 10.307     F5Ib-G1Ib 8 0
40 BD+13 2830A PM* 14 43 02.2726792272 +13 09 55.854515160   11.03 10.35     K0 3 0
41 BD+13 2830B PM* 14 43 02.5838330784 +13 09 51.009659676   11.30 10.58     K0 3 0
42 BD+65 1044 * 15 14 33.1836038736 +64 53 20.210935668   10.10 9.68     F8 4 0
43 BD+15 2867C PM* 15 27 58.5761818776 +14 42 24.380869644   11.45 10.52     K0 7 0
44 BD+15 2867B PM* 15 27 59.1973329168 +14 42 22.721258268   11.37 10.53     K0 8 0
45 HD 155674 PM* 17 10 10.5073172544 +54 29 39.756848388   10.061 8.853     K6V 84 0
46 BD+54 1862 PM* 17 10 12.3552015024 +54 29 24.510961428   10.536 9.209 8.71   K6V 74 0
47 BD+74 718 PM* 17 33 19.4166227952 +74 13 39.850617756       9.6   G0 9 0
48 BD+74 719 PM* 17 33 25.6343864856 +74 14 00.943842732       9.7   G5 9 0
49 HD 167215 SB* 18 12 59.4035421192 +28 15 27.379111716   8.62 8.10     F8 54 0
50 HD 167216 PM* 18 13 02.3071811760 +28 14 47.857780716   8.75 8.22     F8 40 0
51 BD+69 993 PM* 18 33 49.0317813528 +70 02 40.130158848   10.91 10.54     G 6 0
52 BD+69 993a PM* 18 33 50.4849691464 +70 02 32.654891544   11.13 10.52     G 6 0
53 * 16 Cyg A ** 19 41 48.9534996168 +50 31 30.219536784 6.79 6.59 5.95 5.50 5.17 G1.5Vb 715 1
54 * 16 Cyg B PM* 19 41 51.9726777456 +50 31 03.089030916 7.07 6.86 6.20 5.76 5.42 G3V 839 1
55 BD+08 4386B PM* 20 14 58.5498637584 +08 35 16.606765788   11.03 10.39 11.03   G0 2 0
56 BD+08 4386A PM* 20 14 58.8147022272 +08 35 16.308731544   11.50 10.97 10.83   G0 2 0
57 BD+03 4428B PM* 20 48 23.8209061224 +04 25 56.715806784   11.14 10.30     G5 4 0
58 BD+03 4428A PM* 20 48 24.2112301296 +04 25 57.658793916   10.78 10.14     G5 4 0
59 BD+76 835B PM* 21 17 25.8464056608 +76 58 15.231152820   10.97 10.18     G 4 1
60 BD+76 835A PM* 21 17 27.9039011832 +76 58 10.326799560   10.71 10.04     G0wl 4 1
61 AG+01 2679 PM* 22 03 12.0332961024 +01 56 51.665110260   11.3 9.96 10.29   G0 4 0
62 AG+01 2680 PM* 22 03 12.0642674424 +01 57 00.015083856   11.39 10.55     G0 4 0
63 * 53 Aqr B PM* 22 26 34.270424 -16 44 29.72171   6.96 6.32     G3V 105 0
64 * 53 Aqr A PM* 22 26 34.300222 -16 44 31.90085   6.83 6.22     G2V 140 0
65 HD 219542A PM* 23 16 35.2382628336 -01 35 11.476359420   8.88 8.17 8.89   G2V 56 0
66 AG+12 2771 PM* 23 37 34.7625956496 +12 35 51.884508912   11.14 10.43     K0 6 0
67 AG+12 2772 PM* 23 37 36.0503032656 +12 35 59.767987740   11.03 10.29     K0 5 0

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2022.07.06-09:56:34

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