2018A&A...619A.130A

Query : 2018A&A...619A.130A

2018A&A...619A.130A - Astronomy and Astrophysics, volume 619A130-130 (2018/11-1)

The AMBRE project: searching for the closest solar siblings.

ADIBEKYAN V., DE LAVERNY P., RECIO-BLANCO A., SOUSA S.G., DELGADO-MENA E., KORDOPATIS G., FERREIRA A.C.S., SANTOS N.C., HAKOBYAN A.A. and TSANTAKI M.

Abstract (from CDS):


Context. Finding solar siblings, that is, stars that formed in the same cluster as the Sun, will yield information about the conditions at the Sun's birthplace. Finding possible solar siblings is difficult since they are spread widely throughout the Galaxy.
Aims. We search for solar sibling candidates in AMBRE, the very large spectra database of solar vicinity stars.
Methods. Since the ages and chemical abundances of solar siblings are very similar to those of the Sun, we carried out a chemistry- and age-based search for solar sibling candidates. We used high-resolution spectra to derive precise stellar parameters and chemical abundances of the stars. We used these spectroscopic parameters together with Gaia DR2 astrometric data to derive stellar isochronal ages. Gaia data were also used to study the kinematics of the sibling candidates.
Results. From about 17000 stars that are characterized within the AMBRE project, we first selected 55 stars whose metallicities are closest to the solar value (-0.1≤[Fe/H]≤0.1dex). For these stars we derived precise chemical abundances of several iron-peak, α- and neutron-capture elements, based on which we selected 12 solar sibling candidates with average abundances and metallicities between -0.03 and 0.03 dex. Our further selection left us with four candidates with stellar ages that are compatible with the solar age within observational uncertainties. For the two of the hottest candidates, we derived the carbon isotopic ratios, which are compatible with the solar value. HD 186302 is the most precisely characterized and probably the most probable candidate of our four best candidates.
Conclusions. Very precise chemical characterization and age estimation is necessary to identify solar siblings. We propose that in addition to typical chemical tagging, the study of isotopic ratios can give further important information about the relation of sibling candidates with the Sun. Ideally, asteroseismic age determinations of the candidates could solve the problem of imprecise isochronal ages.

Abstract Copyright: © ESO 2018

Journal keyword(s): stars: abundances - stars: kinematics and dynamics - solar neighborhood

VizieR on-line data: <Available at CDS (J/A+A/619/A130): abund.dat>

Simbad objects: 81

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Number of rows : 81
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 Cl Blanco 1 OpC 00 03 04.1 -29 48 55           ~ 380 0
2 HD 631 * 00 10 39.1283097672 +12 49 12.835789104   9.03 8.46     G5 36 0
3 HD 2247 * 00 26 11.4208305480 -21 32 54.866439744   10.189 9.845     F6V 22 0
4 HD 4021 * 00 42 36.0550876872 -16 42 11.597037732   9.55 8.84     G5V 43 0
5 HD 5418 * 00 56 09.1198504560 +13 57 07.051546548 8.140 7.420 6.440     G8II 29 0
6 HD 6245 * 01 02 49.1896926576 -46 23 50.313370020   6.286 5.387     G8III 46 0
7 HD 6204 * 01 02 57.4203939192 -09 51 40.459854636   9.17 8.53     G3V 62 0
8 HD 6790 * 01 07 57.6156653976 -37 53 53.368403712   9.92 9.34     G0V 42 0
9 HD 7515 * 01 14 21.8156788800 -50 15 05.352821028   10.02 9.40     G2/3V 20 0
10 HD 10180 * 01 37 53.5772394024 -60 30 41.482108548   7.95 7.32     G1V 218 2
11 HD 10678 * 01 42 37.0141877136 -58 24 47.321778924   9.08 8.39     G6V 40 0
12 HD 13021 mul 02 04 04.2903812 -71 15 10.708082           G3IV/V 16 0
13 HD 22249 * 03 33 03.8147958312 -46 43 20.293320000   9.38 8.71     G2V 56 0
14 HD 22556 ** 03 37 52.4690963040 +05 38 28.680103104   8.36 7.78     F8 52 0
15 Cl Melotte 22 OpC 03 46 38.0 +24 10 41           ~ 3679 0
16 Cl Melotte 25 OpC 04 30 27.4 +16 46 43           ~ 3309 0
17 HD 29167 ** 04 31 55.95 -59 52 29.5           G0V 13 0
18 HD 29167A * 04 31 55.9521297216 -59 52 29.466639696   10.37 9.76 9.972   ~ 5 0
19 HD 29167B * 04 31 56.6285779920 -59 52 26.226746292   10.63 9.96 10.064   ~ 14 0
20 HD 28676 * 04 32 07.9069406520 +21 37 56.484184296   7.71 7.08     F5 68 0
21 HD 30858 * 04 50 12.8613974616 -26 07 51.638109420   10.33 9.42     K0/1V 43 0
22 HD 37811 RG* 05 39 49.8397379112 -32 37 45.177232224   6.357 5.437     G6/8III 42 0
23 HD 38382 * 05 44 28.3954021848 -20 07 35.661845280   6.898 6.341     F8.5V 107 0
24 HD 41071 * 06 00 41.2986127464 -44 53 50.109263016   9.81 9.07     G8V 55 0
25 HD 41842 * 06 06 16.6150494576 -27 54 20.983891536   9.86 8.98     K1V 55 0
26 HD 45415 * 06 27 20.4505611720 +02 54 29.836279548   6.576 5.543     G8III 77 0
27 CoRoT-7 * 06 43 49.4690164104 -01 03 46.826642700   12.78 11.73 11.36 10.87 K0V 232 1
28 HD 52456 * 07 01 35.5630396032 +06 55 36.632655696   9.02 8.14     K2V 64 0
29 HD 56351 SB* 07 13 42.2234653392 -54 54 02.379030480   9.47 8.83     G5V 33 0
30 HD 62412 * 07 42 48.1523787648 -26 21 04.775421528   6.615 5.628     K1III 52 0
31 HD 62816 * 07 45 29.2405734288 -10 09 38.414857428   8.01 7.55     F5V 33 0
32 HD 64942 * 07 55 58.2271040472 -09 47 49.935359904   9.00 8.34     G3/5V 72 0
33 HD 66488 * 08 03 32.1102794688 -08 10 24.255644412   7.93 7.41     F7V 30 0
34 NGC 2632 OpC 08 39 58.4 +19 36 33           ~ 1733 0
35 * bet Pyx * 08 40 06.1432829632 -35 18 30.078413177   4.885 3.954     G5II/III 82 0
36 BD-20 2665 ** 08 44 40.9945954080 -21 25 47.986824036   11.381 10.240 9.926   K7V 30 0
37 HD 75006 * 08 46 28.8326550336 -27 56 16.356980148   9.93 8.74     K1III 5 0
38 V* HL Cnc BY* 09 01 22.7765982288 +10 43 58.517497164   9.51 8.88     G0 33 0
39 HD 83423 * 09 39 27.4343607912 +42 17 09.143956896   9.32 8.75     F8V 46 0
40 HD 89124 * 10 13 46.8660706920 -71 34 36.549658920   9.66 8.97     G5V 32 0
41 HD 89839 * 10 20 40.5422616216 -53 39 50.736867444   8.169 7.64     F7V 71 1
42 HD 89965 * 10 22 23.4902431776 -28 50 51.434131920   10.40 9.44     K3V 41 0
43 HD 92987 * 10 43 36.2780714160 -39 03 30.554528796   7.66 7.02     G2/3V 77 0
44 HD 95542 * 11 00 17.6973728712 -66 33 25.321186944   8.86 8.27     G0V 57 0
45 HD 96116 * 11 04 13.6519319736 -57 45 54.477392472   9.34 8.69     G3V 85 0
46 * tau Leo * 11 27 56.2395231024 +02 51 22.554108900   5.940 4.943     G8-IIIa 144 0
47 NAME Coma Dwarf Galaxy G 12 26 59.0 +23 54 15     14.1     ~ 482 1
48 HD 109098 * 12 32 04.4496181008 -01 46 20.490935016   7.94 7.31     G3/5V 57 0
49 HD 110108 * 12 40 00.0852307104 -17 41 03.681205044   9.21 8.60     G3V 23 0
50 HD 115341 * 13 16 40.0710619392 -05 34 24.610120752   8.43 7.83     G1V 53 0
51 HD 118563 * 13 38 28.4183030208 -38 19 13.087493724   9.87 9.12     G8V 49 0
52 HD 126829 * 14 28 12.2289142488 -16 06 36.352485072   10.92 9.81     K4+Vk: 41 0
53 HD 131218 * 14 59 39.2251167096 -78 30 39.101831748   9.40 8.74     G3V 49 0
54 HD 136894 * 15 24 02.4279981528 -27 18 18.802157400   8.27 7.53     G8+V 85 0
55 TYC 964-160-1 * 16 32 43.3405417848 +09 47 37.326641568   11.11 10.45     G 8 0
56 HD 155717 * 17 13 21.7190084664 -00 22 53.543834652   10.90 9.88     G5V 33 0
57 HD 158469 * 17 31 19.7571326640 -39 09 55.118534652   8.48 7.94     F8/G2V 52 0
58 HD 162826 * 17 51 14.0224374048 +40 04 20.866168308 7.120 7.070 6.550     F8V 85 0
59 HD 167554 * 18 17 29.6584859448 -38 26 51.746976528   10.53 9.76     K1V 32 0
60 NGC 6633 OpC 18 27 30.2 +06 38 21           ~ 423 0
61 HD 171028 * 18 32 15.4933852584 +06 56 44.685848256   8.93 8.29     G0 71 1
62 HD 175740 * 18 54 52.1770054656 +41 36 09.800403372 7.400 6.490 5.440     G8III 56 0
63 HD 176535 * 19 01 19.4911737264 -13 41 26.481795432   10.9 9.68     K3.5Vk: 42 0
64 NAME V672 Lyr b Pl 19 04 09.8515616256 +36 37 57.446680296           ~ 354 1
65 BD-11 4934B * 19 17 25.0517716968 -11 34 10.284897972   10.85 10.16     G0 6 0
66 HD 181387 * 19 20 18.4794220248 +00 56 17.432904984   10.06 9.52     F3/5+A/F 10 0
67 BD+00 4175B * 19 20 18.6652429992 +00 56 25.154798352   10.44 9.92     ~ 4 0
68 HD 181517 * 19 23 36.9150997392 -53 56 46.075200828   7.60 6.61     K0III 25 0
69 CD-23 15543 * 19 34 09.8265831072 -23 00 59.666984388   11.13 10.07     K3V 33 0
70 HD 186302 * 19 49 06.4303570584 -70 11 16.703275380   9.41 8.76     G3/5V 59 0
71 HD 190204 * 20 05 37.5345443760 -42 15 27.412780788   10.43 9.65     G6V 40 0
72 HD 197300 * 20 43 34.1310384744 -24 41 30.202251072   9.25 8.65     G3V 40 0
73 * gam Mic * 21 01 17.4683639219 -32 15 27.828353047   5.529 4.654     G8III 94 0
74 * iot Cap BY* 21 22 14.7959829093 -16 50 04.358014058 5.74 5.18 4.27 3.65 3.17 G7IIIFe-1.5 204 0
75 HD 207889 * 21 52 29.6856293880 -09 25 04.532626164   7.63 7.20     F6V 29 0
76 HD 209458 V* 22 03 10.7727465312 +18 53 03.549393384   8.21 7.63     F9V 1193 1
77 HD 212563 * 22 25 40.4421222480 -24 43 43.732617744   10.37 9.52     K2V 38 0
78 HD 216530 * 22 54 17.3682404280 -43 00 37.249498152   10.90 9.90     K3V 22 0
79 HD 217738 SB* 23 03 37.0248214824 -56 17 37.063820328   10.689 10.085 10.525   G 8 0
80 HD 217739 * 23 03 37.8093235560 -56 17 47.406505776   10.48 9.91 10.452   G0/3 7 0
81 HD 218614 * 23 09 26.7302332800 -12 37 05.774401380   9.45 8.78     G5V 19 0

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