2004A&A...425..697C

Query : 2004A&A...425..697C

2004A&A...425..697C - Astronomy and Astrophysics, volume 425697-705 (2004/10-2)

The [Zn/Fe] - [Fe/H] trend for disk and halo stars.

CHEN Y.Q., NISSEN P.E. and ZHAO G.

Abstract (from CDS):

Zn abundances, derived from a model atmosphere analysis of the λ6362.35Å ZnI line, are presented for 44 thin disk, 10 thick disk and 8 halo dwarf stars in the metallicity range -1.0<[Fe/H]<+0.2. It is found that [Zn/Fe] in thin disk stars shows a slight increasing trend with decreasing metallicity reaching a value [Zn/Fe]≃+0.1 at [Fe/H]=-0.6. The thick disk stars in the metallicity range -0.9<[Fe/H]←0.6 have an average [Zn/Fe]≃+0.15dex, whereas five alpha-poor and Ni-poor halo stars in the same metallicity range have [Zn/Fe]≃0.0dex. These results indicate that Zn is not an exact tracer of Fe as often assumed in abundance studies of damped Lyman-alpha systems (DLAs). A better understanding of the nucleosynthesis of Zn is needed in order to obtain more detailed information on the past history of star formation in DLAs from e.g. the observed sulphur/zinc ratio.

Abstract Copyright: ∼

Journal keyword(s): stars: abundances - stars: atmospheres - Galaxy: evolution - Galaxy: solar neighbourhood - galaxies: high-redshift

Simbad objects: 62

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Number of rows : 62
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 * 6 Cet PM* 00 11 15.8580395472 -15 28 04.720468404 5.35 5.38 4.89     F8VFe-0.8CH-0.5 334 0
2 * ups And PM* 01 36 47.8415443907 +41 24 19.651368029 4.70 4.64 4.10 3.64 3.35 F9V 1017 1
3 HD 10453 ** 01 41 44.83264 -11 19 28.8186       6.96   F5V 85 0
4 HD 10307 SB* 01 41 47.1268541099 +42 36 48.221567818 5.69 5.58 4.96 4.43 4.10 G1V 523 0
5 HD 13540 * 02 14 55.0489845888 +66 19 15.651560100   7.61 7.18     F5 30 0
6 HD 17288 PM* 02 44 09.9878586597 -60 03 21.799320430   10.557 10.214 10.000   F7V 57 0
7 * tet Per PM* 02 44 11.9866154103 +49 13 42.414669174 4.62 4.62 4.11 3.67 3.37 F8V 428 0
8 HD 17820 PM* 02 51 58.3551725257 +11 22 11.940361848 8.85 8.92   8.0   G5 123 0
9 BD+20 571 Pe* 03 27 39.4522217875 +21 02 34.994793492   11.36   10.8   G0 67 0
10 CD-47 1087 PM* 03 34 44.4683802912 -47 16 12.058432860   10.83 10.26     G8V-VI 40 0
11 * 10 Tau PM* 03 36 52.3837044168 +00 24 05.992097829 5.23 5.15 4.30 4.09 3.77 F9IV-V 595 0
12 HD 22879 Pe* 03 40 22.0652879951 -03 13 01.124265616 7.146 7.222 6.667 6.346 6.016 G0VmF2 529 0
13 HD 24339 PM* 03 51 24.1360373910 -25 55 57.378422899   10.00 9.44     F7V 49 1
14 HD 25704 ** 04 01 44.6317980946 -57 12 24.598726799   8.65 8.10     F7V 161 0
15 HD 33632 PM* 05 13 17.4477692856 +37 20 14.320771980   6.99 6.47 6.2   F8V 107 0
16 * 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
17 HD 39315 ** 05 53 28.63416 +37 20 20.5887   8.58 8.62 7.50   F5 50 0
18 * chi01 Ori SB* 05 54 22.9829893 +20 16 34.222038 5.08 5.00 4.40 3.90 3.59 G0V 895 0
19 HD 39833 PM* 05 55 01.9581989592 -00 30 28.697562252   8.28 7.66     G3V 110 0
20 HD 43947 * 06 19 40.1737305480 +16 00 47.693493252   7.16 6.62     F8V 141 0
21 CD-57 1633 HV* 07 06 28.9516977109 -57 27 29.118927115   10.04 9.54     F7V 114 0
22 HD 55575 PM* 07 15 50.1391766472 +47 14 23.868404124 6.19 6.16   5.2   F9V 321 0
23 HD 58551 PM* 07 26 50.2570417275 +21 32 08.355498800   7.00   6.3   F6V 142 0
24 HD 59380 SB* 07 29 25.6609863875 -07 33 04.450065996   6.327 5.853     F6V 102 0
25 CD-45 3283 PM* 07 34 18.5993129322 -45 16 42.883606401   11.08 10.43     G8V-VI 88 0
26 HD 60319 PM* 07 34 35.1077496408 +16 54 04.028098500   9.46   8.6   F8 108 0
27 * 18 Pup PM* 08 10 39.8256078504 -13 47 57.141934620   6.03 5.54     F6.5V 166 0
28 * chi Cnc PM* 08 20 03.8607602556 +27 13 03.738171893   5.61   4.8   F6V 331 0
29 * 5 LMi PM* 08 50 32.2228174512 +33 17 06.195898140   6.738 6.210     F7Vs 192 0
30 HD 76349 * 08 56 39.4312173072 +33 15 27.925931736   7.81 7.31     G0 57 0
31 HD 76932 PM* 08 58 43.9327642391 -16 07 57.817644364 6.47 6.39 5.86     G2VFe-1.8CH-1 426 0
32 HD 77967 PM* 09 06 51.2169178704 +38 16 42.369558456       6.3   F0 42 0
33 * c UMa SB* 09 14 20.5420366248 +61 25 23.941063920   5.77 5.18     G0V 181 0
34 G 46-31 SB* 09 17 04.0007462520 +03 01 29.610961464   11.359 10.897 10.704   ~ 72 0
35 * tet UMa PM* 09 32 51.4309337983 +51 40 38.333310508 3.67 3.64 3.18 2.74 2.47 F7V 434 0
36 * 15 LMi PM* 09 48 35.3713484808 +46 01 15.626615412 5.80 5.72 5.10 4.57 4.23 G0.5Va 339 0
37 * 36 UMa PM* 10 30 37.5792656400 +55 58 49.939689252       4.5   F8V 351 1
38 HD 91889 PM* 10 36 32.3819362122 -12 13 48.440040258   6.22 5.71     F8V 196 0
39 HD 94280 PM* 10 52 48.9438153336 -06 49 19.173865764   7.73 7.17     G0/1V 64 0
40 * 47 UMa PM* 10 59 27.9727514012 +40 25 48.920572724   5.66   4.7   G1-VFe-0.5 824 1
41 * 88 Leo ** 11 31 44.9441592503 +14 21 52.210714391   6.77   5.9   F9.5V 226 0
42 HD 101676 PM* 11 42 03.9620880216 +12 17 05.687984400 7.510 7.550 7.080     F6V 58 0
43 HD 103723 PM* 11 56 36.0251513496 -21 25 09.829610868   10.554 10.091     F5/6V 87 0
44 HD 105004 PM* 12 05 24.8526164337 -26 35 43.750181317   10.96 10.39     F9 117 0
45 HD 106516 SB* 12 15 10.55731 -10 18 44.6354 6.44 6.57 6.11     F9VFe-1.7CH-0.7 443 0
46 CD-39 7674 * 12 32 28.7989749192 -40 05 54.666366468   11.5 11.1     F6 37 0
47 HD 109303 PM* 12 33 19.0294913328 +49 18 06.827723352   8.65 8.15     F8 61 0
48 HD 113679 PM* 13 05 52.8245053407 -38 30 59.990193435   10.342 9.797     G2/3V 114 0
49 * 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
50 * e Vir PM* 13 16 46.5148594512 +09 25 26.960139646   5.81   4.8   G0IV 590 1
51 HD 120559 SB* 13 51 40.3987847839 -57 26 08.350982731 8.679 8.647 7.982 7.605 7.217 G7VFe-1.4CH-1 168 0
52 HD 121004 PM* 13 53 58.1163626566 -46 32 19.522719077   10.112 9.522     G2V 164 0
53 HD 150177 PM* 16 39 39.1296604152 -09 33 16.512558300   6.794 6.332     F6V 169 0
54 V* V2213 Oph BY* 17 05 16.8186610814 +00 42 09.221511649   6.59   5.6   F8.5IV-V 352 0
55 HD 157466 PM* 17 22 27.6459785904 +24 52 45.935235804       6.6   F8V 133 0
56 * psi01 Dra B PM* 17 41 58.1032377264 +72 09 24.845629104   6.04 5.53 5.2   F8V 168 0
57 * 17 Cyg PM* 19 46 25.6000487071 +33 43 39.353533637   5.46   4.7   F5.5IV-V 290 0
58 HD 189340 SB* 19 59 47.2802830338 -09 57 29.634435094   6.45 5.87     F9V 170 0
59 HD 204363 * 21 28 13.9472520024 -11 34 05.819764872   7.10 6.62     F9VFe-1.3CH-0.7 61 0
60 * ksi Peg PM* 22 46 41.5798542334 +12 10 22.388860108 4.66 4.69 4.20 3.73 3.42 F6V 406 0
61 HD 216106 PM* 22 49 17.5662112896 +50 58 36.152538420 7.310 7.290 6.750     G0 54 0
62 * 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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