2004A&A...423..683S

Query : 2004A&A...423..683S

2004A&A...423..683S - Astronomy and Astrophysics, volume 423683-691 (2004/8-4)

Sodium abundances in nearby disk stars.

SHI J.R., GEHREN T. and ZHAO G.

Abstract (from CDS):

We present sodium abundances for a sample of nearby stars. All results have been derived from NLTE statistical equilibrium calculations. The influence of collisional interactions with electrons and hydrogen atoms is evaluated by comparison of the solar spectrum with very precise fits to the NaI line cores. The NLTE effects are more pronounced in metal-poor stars since the statistical equilibrium is dominated by collisions of which at least the electronic component is substantially reduced. The resulting influence on the determination of sodium abundances is in a direction opposite to that found previously for Mg and Al. The NLTE corrections are about -0.1 in thick-disk stars with [Fe/H] ~-0.6. Our [Na/Fe] abundance ratios are about solar for thick- and thin-disk stars. The increase in [Na/Fe] as a function of [Fe/H] for metal-rich stars found by Edvardsson et al. (1993A&A...275..101E) is confirmed. Our results suggest that sodium yields increase with the metallicity, and quite large amounts of sodium may be produced by AGB stars. We find that [Na/Fe] ratios, together with either [Mg/Fe] ratio, kinematic data or stellar evolutionary ages, make possible the individual discrimination between thin- and thick-disk membership.

Abstract Copyright: ∼

Journal keyword(s): line: formation - line: profiles - stars: abundances - stars: late-type - Galaxy: evolution

VizieR on-line data: <Available at CDS (J/A+A/423/683): table2.dat>

Simbad objects: 99

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Number of rows : 99
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 400 PM* 00 08 40.9385785968 +36 37 37.652234016       5.9   F8IV 172 0
2 HD 3079 PM* 00 34 29.7115042606 +47 54 55.953793110   7.93 7.38 7.1   F8 90 0
3 * eta Cas PM* 00 49 06.2945942922 +57 48 54.638239716 4.04 4.02 3.44 2.94 2.58 F9V 680 0
4 HD 5015 PM* 00 53 04.1964421920 +61 07 26.299289856 5.43 5.34 4.80 4.32 4.02 F9V 244 1
5 * mu. Cas SB* 01 08 16.3029454473 +54 55 12.561201263 5.93 5.86 5.17 4.55 4.13 G5Vb 593 1
6 * 44 And PM* 01 10 18.7404097416 +42 04 53.309986932   6.249 5.665     F8V 194 0
7 HD 9407 PM* 01 34 33.2647932084 +68 56 53.289515638   7.21   6.1   G6.5V 175 0
8 * ups And PM* 01 36 47.8415443907 +41 24 19.651368029 4.70 4.64 4.10 3.64 3.35 F9V 1017 1
9 * 109 Psc PM* 01 44 55.8255136824 +20 04 59.336892804   6.984 6.279     G3Va 314 2
10 * 79 Cet PM* 02 35 19.9291748518 -03 33 38.172943076   7.49 6.78     G2V 317 1
11 BD+46 610 SB* 02 41 45.7397605656 +47 21 01.290205512       8.8   F8 68 0
12 * tet Per PM* 02 44 11.9866154103 +49 13 42.414669174 4.62 4.62 4.11 3.67 3.37 F8V 428 0
13 * 51 Ari PM* 03 02 26.0263370112 +26 36 33.260418324       6.2   G8V 176 0
14 HD 18757 PM* 03 04 09.6346411530 +61 42 20.959769812   7.25   6.2   G1.5V 147 0
15 * iot Per PM* 03 09 04.0193012009 +49 36 47.802053343 4.76 4.64   3.7   G0V 578 0
16 * 94 Cet PM* 03 12 46.4365677072 -01 11 45.955808988   5.631 5.070     F8.5V 478 1
17 HD 20619 PM* 03 19 01.8943387080 -02 50 35.493108792 7.82 7.697 7.039 6.691 6.343 G1.5V 220 0
18 HD 22879 Pe* 03 40 22.0652879951 -03 13 01.124265616 7.146 7.222 6.667 6.346 6.016 G0VmF2 529 0
19 HD 25457 TT* 04 02 36.7442719512 -00 16 08.119921152   5.88 5.38     F7V 293 0
20 HD 284248 Pe* 04 14 35.5161858536 +22 21 04.252516252 9.49 9.68 9.23 8.77 8.43 sdG0 200 0
21 HD 30743 PM* 04 49 42.2441132544 -13 46 10.807837356   6.70 6.26     F6VFe-0.9CH-0.5 144 0
22 HD 30649 PM* 04 51 43.5748348116 +45 50 02.818509833 7.59 7.55 6.97 6.45 6.10 F9VgG1mF7 243 0
23 * lam Aur PM* 05 19 08.4754499121 +40 05 56.585080940 5.46 5.33 4.71 4.18 3.86 G1.5IV-VFe-1 567 0
24 HD 37124 PM* 05 37 02.4866159419 +20 43 50.832948117   8.35   7.2   G4IV-V 321 2
25 * 71 Ori PM* 06 14 50.8763445432 +19 09 23.212428948   5.64   4.9   F5.5IV-V 193 0
26 * k Ori PM* 06 16 26.6191067712 +12 16 19.787639592   5.46   4.8   F5V 153 0
27 HD 52711 PM* 07 03 30.4592307736 +29 20 13.493121298 6.57 6.53   5.6   G0V 280 0
28 * 22 Lyn PM* 07 29 55.9571717856 +49 40 20.853841260   5.802 5.357     F6V 156 0
29 * alf CMi SB* 07 39 18.11950 +05 13 29.9552 0.82 0.79 0.37 -0.05 -0.28 F5IV-V+DQZ 1925 0
30 HD 62301 PM* 07 44 56.1929632534 +39 33 22.915760845 7.220 7.270   6.4   F8V 144 0
31 * mu.02 Cnc PM* 08 07 45.8562513552 +21 34 54.526814256 6.14 5.93 5.30     G1IVb 238 0
32 HD 69611 PM* 08 17 29.3481646355 -03 59 22.623439715   8.32 7.74     G0V 159 0
33 * rho01 Cnc PM* 08 52 35.8111044043 +28 19 50.954994470 7.45 6.82   5.4   K0IV-V 1223 1
34 HD 90508 ** 10 28 03.88212 +48 47 05.6554 7.09 7.03   5.98   F9-V 247 1
35 * 47 UMa PM* 10 59 27.9727514012 +40 25 48.920572724   5.66   4.7   G1-VFe-0.5 824 1
36 HD 102158 PM* 11 45 30.5082432219 +47 40 00.768612834   8.67 8.05 7.7   G2 121 0
37 * bet Vir PM* 11 50 41.7185158616 +01 45 53.001539131 4.26 4.15 3.60 3.13 2.85 F9V 973 0
38 * bet CVn ** 12 33 44.5442516547 +41 21 26.921352859 4.91 4.86 4.25 3.73 3.42 G0V 613 0
39 * bet Com PM* 13 11 52.3938268062 +27 52 41.462309460 4.92 4.84 4.25 3.77 3.47 F9.5V 946 0
40 HD 114762 SB* 13 12 19.7410686234 +17 31 01.630334317 7.78         F9VgF8mF4+M6?V 570 1
41 * 70 Vir PM* 13 28 25.8085908881 +13 46 43.638308807 5.930 5.680 4.970 4.37 3.98 G4Va 754 1
42 * tau Boo PM* 13 47 15.7381720026 +17 27 24.809555600 5.02 4.98 4.49 4.09 3.85 F7IV-V 1049 1
43 * eta Boo SB* 13 54 41.07892 +18 23 51.7946 3.440 3.250 2.680 2.24 1.95 G0IV 733 0
44 HD 121560 PM* 13 55 49.9935853152 +14 03 23.407899444   6.66   5.9   F6V 148 0
45 HD 122742 SB* 14 03 32.3409126166 +10 47 12.341888345   7.026 6.268 5.8   G6V 196 0
46 * iot Vir PM* 14 16 00.8682760805 -06 00 01.969483331 4.64 4.60 4.08     F7III 372 0
47 HD 126053 PM* 14 23 15.2847745835 +01 14 29.641269692 6.98 6.90 6.27 5.71 5.39 G1.5V 442 0
48 HD 127334 PM* 14 29 36.8087722032 +41 47 45.285437076 7.370 7.050   5.9   G5VCH0.3 196 0
49 HD 130322 PM* 14 47 32.7262287384 -00 16 53.307811560   8.82 8.04     K0V 303 1
50 * alf01 Lib SB* 14 50 41.1718805688 -15 59 49.957540152 5.53 5.57 5.16 4.78 4.59 F3V 214 0
51 HD 132254 PM* 14 56 23.0403907176 +49 37 42.419704116   6.13   5.3   F8-V 147 0
52 * 23 Lib PM* 15 13 28.6669233518 -25 18 33.653388418   7.168 6.46 6.43   G6IV-V 332 1
53 HD 136064 PM* 15 14 38.3389842926 +67 20 48.198556893   5.66   4.8   F8V 187 0
54 * 5 Ser PM* 15 19 18.7974409923 +01 45 55.466382064   5.60   4.8   F8IV 355 0
55 * eps Lib SB* 15 24 11.8837924176 -10 19 20.203874400   5.358 4.920     F4V 156 0
56 * lam Ser PM* 15 46 26.6142121632 +07 21 11.047378824 5.13 5.03 4.42 3.92 3.60 G0-V 618 0
57 * chi Her PM* 15 52 40.5410491705 +42 27 05.462878877 5.19 5.19 4.62 4.14 3.82 F8VFe-2Hdel-1 532 0
58 * gam Ser PM* 15 56 27.1826577018 +15 39 41.809580382 4.31 4.34 3.84 3.37 3.13 F6V 586 0
59 * rho CrB PM* 16 01 02.6604891411 +33 18 12.639472357   6.01   5.0   G0+VaFe-1 686 1
60 * 14 Her PM* 16 10 24.3156759007 +43 49 03.507406809   7.57   6.1   K0V 482 1
61 * 18 Sco PM* 16 15 37.2702755653 -08 22 09.982125430   6.15 5.50     G2Va 671 0
62 * zet Her SB* 16 41 17.16104 +31 36 09.7873 3.640 3.430 2.800 2.31 1.99 G0IV 562 0
63 * h Dra SB* 16 56 01.6911695305 +65 08 05.296785878   5.36 4.88 4.6   F8V 218 0
64 HD 154345 PM* 17 02 36.4038090379 +47 04 54.764174452   7.50   6.3   G9 297 1
65 * w Her RG* 17 20 39.5674498400 +32 28 03.877958860 6.08 6.01 5.39 4.89 4.56 G0V 481 0
66 HD 157347 PM* 17 22 51.2877087336 -02 23 17.439450684   6.965 6.278     G3V 231 0
67 HD 159222 PM* 17 32 00.9920372760 +34 16 16.133732796 7.38 7.21   6.1   G1V 266 0
68 * psi01 Dra A SB* 17 41 56.0623701456 +72 08 55.927617972   4.98 4.55 4.3   F5IV-V 177 1
69 * psi01 Dra B PM* 17 41 58.1032377264 +72 09 24.845629104   6.04 5.53 5.2   F8V 168 0
70 * mu.01 Her ** 17 46 27.5472960785 +27 43 14.560978925 4.56 4.17 3.42 2.89 2.51 G5IV 719 0
71 * 35 Dra PM* 17 49 27.0323669376 +76 57 46.365339960   5.53   4.7   F6IV-Vs 109 0
72 HD 165401 PM* 18 05 37.4541846601 +04 39 25.797083469 7.443 7.399 6.786 6.432 6.09 G2V 236 0
73 * b Her SB* 18 07 01.5906608928 +30 33 43.584892488 5.52 5.67 5.13 4.61 4.28 F6V 493 0
74 * 36 Dra PM* 18 13 53.8328065738 +64 23 50.225760192   5.407 4.987 4.8   F5V 215 0
75 HD 168009 PM* 18 15 32.4633956040 +45 12 33.540706764   6.931 6.298     G1V 239 0
76 * 110 Her PM* 18 45 39.7256792847 +20 32 46.713086264 4.66 4.65 4.19 3.80 3.54 F5.5IV-V 427 0
77 HD 176377 PM* 18 58 51.0029782656 +30 10 50.318900724   7.37   6.4   G1V 145 0
78 HD 178428 SB* 19 07 57.3202744638 +16 51 12.174804109   6.77 6.07 5.6   G4.5V 200 0
79 * b Aql PM* 19 24 58.1999714302 +11 56 39.888480530 6.35 5.93   4.7   G7IVHdel1 522 0
80 HD 184499 PM* 19 33 27.0808591023 +33 12 06.719255906 7.22 7.22 6.64 6.14 5.79 G0V 256 0
81 * 16 Cyg A ** 19 41 48.9534996168 +50 31 30.219536784 6.79 6.59 5.95 5.50 5.17 G1.5Vb 814 0
82 * 16 Cyg B PM* 19 41 51.9726777456 +50 31 03.089030916 7.07 6.86 6.20 5.76 5.42 G3V 949 1
83 * 17 Cyg PM* 19 46 25.6000487071 +33 43 39.353533637   5.46   4.7   F5.5IV-V 290 0
84 * omi Aql PM* 19 51 01.6436960928 +10 24 56.592457524   5.66   4.8   F8V 481 0
85 HD 187923 PM* 19 52 03.4383778549 +11 37 41.972274281   6.78   5.8   G0V 216 0
86 HD 190360 PM* 20 03 37.4050868074 +29 53 48.492435887   6.44   5.2   G7IV-V 490 1
87 * 15 Sge PM* 20 04 06.2207683221 +17 04 12.676556401   6.390 5.788 5.4   G0V 420 0
88 HD 204155 PM* 21 26 42.9050916792 +05 26 29.902289568   9.03   8.1   F7V 141 0
89 * 15 Peg PM* 21 52 29.9168018496 +28 47 36.750679764 5.82 5.95 5.53     F2V 250 0
90 HD 209458 V* 22 03 10.7727465312 +18 53 03.549393384   8.21 7.63     F9V 1193 1
91 HD 210277 PM* 22 09 29.8657847411 -07 32 55.162082226   8.85 8.57 7.36   G8V 366 1
92 HD 210855 PM* 22 11 48.7670966976 +56 50 21.684542208   5.75   4.9   F8V 135 0
93 * ksi Peg PM* 22 46 41.5798542334 +12 10 22.388860108 4.66 4.69 4.20 3.73 3.42 F6V 406 0
94 * sig Peg PM* 22 52 24.0744611045 +09 50 08.394417666   5.63 5.16 4.9   F6V 289 0
95 * 51 Peg PM* 22 57 27.9804852576 +20 46 07.797040104 6.39 6.16 5.46 4.97 4.61 G2IV 1216 1
96 * 5 And PM* 23 07 45.3835501176 +49 17 44.790446544   6.14   5.4   F5V 165 0
97 HD 219623 PM* 23 16 42.3035603040 +53 12 48.509346060   6.06   5.2   F8V 201 0
98 HD 221830 PM* 23 35 28.8941578040 +31 01 01.830647333   7.45   6.5   G2 175 0
99 * 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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