2015A&A...579A...8W


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.14CEST17:17:11

2015A&A...579A...8W - Astronomy and Astrophysics, volume 579A, 8-8 (2015/7-1)

Palladium and silver abundances in stars with [Fe/H] > -2.6.

WU X., WANG L., SHI J., ZHAO G. and GRUPP F.

Abstract (from CDS):

Palladium (Pd) and silver (Ag) are the key elements for probing the weak component in the rapid neutron-capture process (r-process) of stellar nucleosynthesis. We performed a detailed analysis of the high-resolution and high signal-to-noise ratio near-UV spectra from the archive of HIRES on the Keck Telescope, UVES on the VLT, and HDS on the Subaru Telescope, to determine the Pd and Ag abundances of 95 stars. This sample covers a wide metallicity range with -2.6≲[Fe/H]≲+0.1, and most of them are dwarfs. The plane-parallel local thermodynamic equilibrium MAFAGS-OS model atmosphere was adopted, and the spectral synthesis method was used to derive the Pd and Ag abundances from PdI λ3404Å and AgI λ3280/3382Å lines. We found that both elements are enhanced in metal-poor stars, and their ratios to iron show flat trends at -0.6<[Fe/H]<+0.1. The abundance ratios of [Ag/H] and [Pd/H] are well correlated over the whole abundance range. This implies that Pd and Ag have similar formation mechanisms during the Galactic evolution.

Abstract Copyright:

Journal keyword(s): stars: abundances - stars: Population II - Galaxy: evolution

Simbad objects: 98

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Number of rows : 98

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 G 130-65 PM* 00 22 38.5911639797 +23 54 31.307475998   12.06   11.5   sdF8: 32 0
2 HD 6268 Pe* 01 03 18.1719480473 -27 52 49.953588224   9.725 9.046 8.601   F/Gw 134 0
3 BPS CS 31082-0001 Pe* 01 29 31.1311330115 -16 00 45.496485322 12.527 12.427 11.642 11.189 10.713 CEMP 243 0
4 BD+29 366 PM* 02 10 24.5274383291 +29 48 23.663384860 9.27 9.35 8.77 8.24 7.85 G3 122 0
5 BD-01 306 PM* 02 14 40.2992022335 -01 12 05.123755516 9.60 9.631 9.066 8.712 8.377 G0 132 0
6 HD 14877 PM* 02 24 39.7661580028 +22 26 01.882900160   8.98 8.48     G0 32 0
7 BD-17 484 PM* 02 31 25.7658698295 -16 59 05.047040170   10.890 10.470 10.159 9.871 F0Vwl 61 0
8 BD+22 396 PM* 02 48 37.4278235965 +22 35 54.370213342   10.68   9.9   G4 33 0
9 HD 22521 SB* 03 38 57.1768395380 +42 32 18.064304789       6.4   G0 49 0
10 HD 24289 PM* 03 51 54.5434322372 -03 49 10.686676166   10.48 9.96     F0V 61 0
11 HD 24421 PM* 03 55 37.0793465692 +52 13 36.554626062 9.036 7.30   6.5   F8VmF1 61 0
12 HD 25173 PM* 04 07 24.0241870896 +75 10 30.157694448   7.70   6.9   F8V 55 0
13 HD 26421 PM* 04 12 22.9404269850 +37 42 43.514337446       7.8   G0 36 0
14 HD 284248 PM* 04 14 35.5161833236 +22 21 04.254015290 9.49 9.68 9.23 8.77 8.43 sdG0 165 0
15 HD 28620 * 04 32 17.2523672157 +37 02 35.687402986 7.230 7.270 6.810     F5 44 0
16 HD 30743 PM* 04 49 42.2440829533 -13 46 10.807503461   6.70 6.26     F6VFe-0.9CH-0.5 108 0
17 HD 31128 PM* 04 52 09.9097489102 -27 03 50.940327190   9.55 9.14     F3/5Vw 119 0
18 HD 241253 PM* 05 09 56.9590196910 +05 33 26.743378965   10.24   9.4   G0 83 0
19 HD 33632 PM* 05 13 17.4475043132 +37 20 14.323451459   6.98   6.2   F8V 70 0
20 NAME Gal Anticenter reg 05 46 +28.9           ~ 720 0
21 HD 247297 PM* 05 45 40.3823971357 +14 41 20.112422752       8.7   G0 32 0
22 Ross 797 PM* 05 53 58.8111717557 -14 22 53.260409494   12.020 11.496 11.132 10.797 F9 32 0
23 BD+58 876 ** 05 57 28.5808850435 +58 40 48.776609280       10.2   F8 30 0
24 HD 250792 PM* 06 03 14.8634898007 +19 21 38.692248180 9.89 9.898 9.310 8.954 8.547 G1 144 3
25 BD+37 1458 PM* 06 16 01.5222776277 +37 43 18.756795213 9.41 9.52 8.92 8.34 7.91 G0 125 0
26 G 192-43 PM* 06 47 44.9355583602 +58 38 34.534478265   10.75   10.1   F2 59 0
27 CD-57 1633 HV* 07 06 28.9517777029 -57 27 29.118056344   10.04 9.54     F7V 86 0
28 G 88-10 SB* 07 10 23.7929495467 +24 20 40.199462821   12.30   11.7   ~ 47 0
29 HD 54717 PM* 07 11 19.4839240936 +33 06 42.714346466   7.59 7.16     F5 36 0
30 Ross 390 PM* 07 34 52.9594811934 -10 23 10.075450754   11.746 11.100 10.701 10.325 G5 53 0
31 * alf CMi SB* 07 39 18.11950 +05 13 29.9552 0.82 0.79 0.37 -0.05 -0.28 F5IV-V+DQZ 1758 0
32 HD 63333 PM* 07 49 18.8519496646 +24 29 19.420370350 7.550 7.580 7.100     F5 51 0
33 HD 68284 PM* 08 11 49.5874485613 +04 16 28.328065141   8.28 7.75     F7/8V 77 0
34 BD+00 2245 PM* 08 16 57.7755569201 +00 01 03.598095093   10.36 9.76 9.55   G0 32 0
35 HD 76932 PM* 08 58 43.9328634171 -16 07 57.805389219 6.47 6.39 5.86     G2VFe-1.8CH-1 366 0
36 * 83 Cnc PM* 09 18 58.8570535656 +17 42 18.952268371 7.05 7.11 6.64 6.18 5.89 F5 92 0
37 HD 84937 PM* 09 48 56.09801 +13 44 39.3237 8.49 8.68 8.32 7.97 7.70 F8Vm-5 717 0
38 * 39 Leo PM* 10 17 14.5381705392 +23 06 22.387429139 6.27 6.32 5.82 5.34 5.07 F6V 189 0
39 HD 298986 PM* 10 17 14.8775103392 -52 29 18.691601582   10.46 10.03   9.48 F5 72 0
40 HD 91638 PM* 10 34 50.2184231201 -03 53 58.893606429   7.17 6.67     F7V 55 0
41 HD 91889 PM* 10 36 32.3819362122 -12 13 48.440040258   6.22 5.70     F8V 163 0
42 HD 94028 PM* 10 51 28.1254469804 +20 16 38.965521484 8.51 8.69 8.22 7.82 7.54 F8 329 0
43 HD 94835 PM* 10 57 09.5529309533 +21 48 17.543465105   8.59   7.5   G0 61 0
44 Wolf 365 PM* 11 10 59.9989396644 +06 25 11.471066063   12.13   11.0   sd:G3 76 0
45 HD 97320 Pe* 11 11 00.7344947834 -65 25 37.746274848   9.769 9.269     F3V 122 0
46 HD 97916 SB* 11 15 54.2294079228 +02 05 11.982106821 9.50 9.61   8.9   F0V 153 0
47 * 88 Leo ** 11 31 44.9446108040 +14 21 52.213131158   6.77   5.9   F9.5V 173 0
48 BD+51 1696 PM* 11 46 35.1557706721 +50 52 54.682692534 10.32 10.47   9.5   sdG0 129 0
49 HD 103723 PM* 11 56 36.0250188318 -21 25 09.826660968   10.554 10.091     F5/6V 67 0
50 HD 104056 PM* 11 59 03.0838158008 -04 46 38.936919475   9.58 9.01     G3V 47 0
51 BD-04 3208 PM* 12 07 15.0719832426 -05 44 01.609304815   10.40 9.99     A7 133 0
52 HD 106038 PM* 12 12 01.3690548564 +13 15 40.620671155 10.45 10.630 10.162 9.851 9.539 F6wl 169 0
53 HD 109303 PM* 12 33 19.0294958847 +49 18 06.828291398   8.65 8.15     F8 48 0
54 HD 110184 Pe* 12 40 14.0784174924 +08 31 38.056629204 10.20 9.45 8.27 8.52   KIIvw 126 0
55 HD 111980 SB* 12 53 15.0528185218 -18 31 20.009066873 8.80 8.91 8.38     F7V 154 0
56 HD 113679 PM* 13 05 52.8243888123 -38 30 59.990798799   10.342 9.797     G2/3V 81 0
57 HD 118244 SB* 13 35 11.4462203053 +22 29 59.304035796   7.34   6.7   F5V 64 0
58 BD+13 2698 ** 13 39 59.57275 +12 35 21.6837   9.94   9.0   F9V 77 0
59 HD 121004 PM* 13 53 58.1163515488 -46 32 19.526169178   10.112 9.522     G2V 126 0
60 HD 122196 PM* 14 01 02.1244272306 -38 03 03.297565043   9.19 8.75     F0(V)w 107 0
61 HD 122563 Pe* 14 02 31.8456299772 +09 41 09.942736952 7.47 7.10 6.19 5.37 4.79 G8:III:Fe-5 746 0
62 HD 126681 PM* 14 27 24.9096361739 -18 24 40.457119166   9.939 9.535     G3V 164 0
63 HD 132475 PM* 14 59 49.7649807130 -22 00 45.814964574 8.98 9.11 8.55     F5/6V 223 1
64 HD 134440 PM* 15 10 12.9678041572 -16 27 46.510775897 10.69 10.217 9.426 8.913 8.441 K2V 256 0
65 HD 134439 PM* 15 10 13.0874231858 -16 22 45.866399625 10.03 9.837 9.066 8.604 8.160 sd:K1Fe-1 300 0
66 HD 140283 Pe* 15 43 03.0967798658 -10 56 00.595803430 7.508 7.711 7.212 6.63 8.21 F9VkA5mA1 852 0
67 BD-06 4346 PM* 16 03 00.1730522578 -06 27 11.166778247   10.93 10.18     ~ 24 0
68 BD+42 2667 PM* 16 03 13.2989292029 +42 14 46.649595940   10.33   9.6   F5 131 0
69 HD 160617 PM* 17 42 49.3235999900 -40 19 15.505712142   9.18 8.73 8.394 8.065 G0 182 0
70 BD+20 3603 PM* 17 54 43.2306261669 +20 16 16.443521966   10.13   9.6   F0 146 0
71 BD+01 3597 PM* 18 07 56.5964043216 +01 52 32.700438137   11.53   10.8   sdF5 57 0
72 HD 166913 PM* 18 16 25.6833261555 -59 24 11.241154880   8.66 8.23     F5/7Vw 121 0
73 G 21-22 PM* 18 39 09.7160540500 +00 07 14.317373403   11.285 10.775 10.437 10.086 G4 59 0
74 HD 175179 PM* 18 54 23.2030233107 -04 36 18.624524830 9.56 9.61 9.03     G5V 103 0
75 HD 186379 PM* 19 43 07.0300235292 +24 35 52.584762528   7.41   6.5   F8V 77 0
76 HD 188510 PM* 19 55 09.6783577203 +10 44 27.395091177 9.30 9.41   8.5   G5V: 232 0
77 HD 189558 PM* 20 01 00.2452564415 -12 15 20.355884232   8.27 7.72     F8/G2V 170 1
78 HD 345957 PM* 20 10 48.1626273226 +23 57 54.507927464   9.36   8.6   G0V: 130 0
79 HD 194598 PM* 20 26 11.9185966774 +09 27 00.429262518 8.62 8.82 8.34 7.90 7.56 F8 284 0
80 HD 195633 PM* 20 32 23.9917031781 +06 31 03.251333868 9.05 9.03 8.52     G0Vw 126 0
81 G 24-25 SB* 20 40 16.1061603541 +00 33 19.669357894       10.2   CEMP-s 38 0
82 CD-30 18140 PM* 20 44 06.2871219229 -30 00 07.598765502   10.326 9.932     F8 73 0
83 BD+04 4551 PM* 20 48 50.7247200687 +05 11 58.817666311   10.13 9.67 9.61   F7Vw 68 0
84 * 15 Del PM* 20 49 37.7673480167 +12 32 42.456547015   6.421 5.991     F5V 80 0
85 HD 200580 SB* 21 04 07.4073421467 +02 59 40.012308707 7.82 7.85   7.0   F9V 151 0
86 HD 201891 PM* 21 11 59.0322335571 +17 43 39.888647667 7.74 7.88 7.37 6.91 6.59 G5V_Fe-2.5 367 0
87 HD 202884 PM* 21 18 37.1778080042 +08 57 34.768705123 7.690 7.740 7.270     F5 38 0
88 HD 204712 PM* 21 30 08.4439752899 +12 16 14.481270834       7.3   F5V 50 0
89 HD 205650 PM* 21 37 26.0309417494 -27 38 06.697112156   9.59 9.00     F6V 94 0
90 BD+26 4251 PM* 21 43 57.1238901563 +27 23 23.991146537       9.9   F6 72 0
91 BD+19 4788 PM* 21 48 19.2877532861 +19 58 30.633926083       9.6   ~ 33 0
92 HD 209320 * 22 02 01.4351453562 +23 29 44.036740377   8.86 8.33     F8 34 0
93 HD 209858 PM* 22 05 54.0515051522 +27 58 01.326816065   8.27   7.4   F8V 36 0
94 BD+17 4708 SB* 22 11 31.3751899315 +18 05 34.158392398 9.73 9.91 9.46 9.03 8.70 sdF8 536 0
95 BPS CS 22892-0052 Pe* 22 17 01.6558480594 -16 39 27.051900047   14.03 13.20 13.06 12.19 KIIvw 410 0
96 BD+07 4841 PM* 22 18 36.5061308735 +08 26 44.960669943   10.84   10.1   G0 96 0
97 HD 215442 PM* 22 44 19.5103714718 +51 26 58.555379234 8.100 8.040 7.490     F8 36 0
98 HD 220242 PM* 23 21 58.2504868875 +26 36 32.076868471   6.967 6.586     F5V 35 0

    Equat.    Gal    SGal    Ecl

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2020.07.14-17:17:11

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