2004A&A...423..777B

Query : 2004A&A...423..777B

2004A&A...423..777B - Astronomy and Astrophysics, volume 423777-786 (2004/9-1)

Cu and Zn in the early Galaxy.

BIHAIN G., ISRAELIAN G., REBOLO R., BONIFACIO P. and MOLARO P.

Abstract (from CDS):

We present Cu and Zn abundances for 38 FGK stars, mostly dwarfs, spanning a metallicity range between solar and [Fe/H]=-3. The abundances were obtained using Kurucz's local thermal equilibrium (LTE) model atmospheres and the near-UV lines of CuI 3273.95Å and ZnI 3302.58Å observed at high spectral resolution. The trend of [Cu/Fe] versus [Fe/H] is almost solar for [Fe/H]>-1 and then decreases to a plateau <[Cu/Fe]≥-0.98 at [Fe/H]←2.5, whereas the [Zn/Fe] trend is essentially solar for [Fe/H]>-2 and then slightly increases at lower metallicities to an average value of <[Zn/Fe]≥+0.18. We compare our results with previous work on these elements, and briefly discuss them in terms of nucleosynthesis processes. Predictions of halo chemical evolution fairly reproduce the trends, especially the [Cu/Fe] plateau at very low metallicities, but to a lesser extent the higher [Zn/Fe] ratios at low metallicities, indicating possibly missing yields.

Abstract Copyright: ∼

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

Simbad objects: 43

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Number of rows : 43
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 225239 SB* 00 04 53.7246874433 +34 39 34.801234025 6.82 6.74 6.11 5.56 5.18 G3 191 0
2 HD 2665 PM* 00 30 45.4469338728 +57 03 53.628989292 8.66 8.51 7.72     G5IIIw 188 0
3 HD 2796 Pe* 00 31 16.9147531152 -16 47 40.790991624 9.58 9.28 8.50 8.14 8.67 Fw 203 0
4 HD 3795 SB* 00 40 32.7939851012 -23 48 17.728718238   6.84 6.14     K0VFe-1.5CH-1.3 227 0
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 BD-16 251 RG* 01 29 31.1311443552 -16 00 45.495314460 12.527 12.427 11.642 11.189 10.713 CEMP 318 0
7 HD 19445 Pe* 03 08 25.5883873084 +26 19 51.400965175 8.29 8.52 8.06 7.60 7.27 G2VFe-3 801 0
8 HD 22879 Pe* 03 40 22.0652879951 -03 13 01.124265616 7.146 7.222 6.667 6.346 6.016 G0VmF2 529 0
9 HD 25329 PM* 04 03 14.9979736362 +35 16 23.805785323 9.75 9.37 8.50 7.75 7.23 K1VbFe-2 379 0
10 BD+03 740 HB* 05 01 16.6226363256 +04 06 37.021736844 9.97 10.17 9.7 9.6   sdF0 182 0
11 BD+37 1458 Pe* 06 16 01.5222885381 +37 43 18.754343426 9.41 9.52 8.92 8.34 7.91 G0 146 0
12 HD 64090 Pe* 07 53 33.1208795337 +30 36 18.256204963 8.75 8.86 8.25 7.70 7.30 K0:V_Fe-3 374 0
13 HD 76932 PM* 08 58 43.9327642391 -16 07 57.817644364 6.47 6.39 5.86     G2VFe-1.8CH-1 426 0
14 HD 84937 Pe* 09 48 56.0992891997 +13 44 39.326709913 8.49 8.68 8.32 7.97 7.70 F8Vm-5 831 0
15 HD 87140 PM* 10 04 43.1808079344 +54 20 43.425537648 9.70 9.68 8.98     K0 120 0
16 HD 94028 PM* 10 51 28.1256073369 +20 16 38.965439278 8.51 8.69 8.22 7.82 7.54 F8 375 0
17 BD+31 2290 PM* 11 44 40.9643370921 +30 57 33.448132849   10.09   8.3   K4V 93 1
18 HD 103095 Pe* 11 52 58.7673387755 +37 43 07.254113125 7.38 7.20 6.45 5.80 5.35 K1V_Fe-1.5 842 1
19 Wolf 1492 Pe* 13 40 02.4921849768 -00 02 18.750053436 11.601 11.832 11.451 11.184 10.892 sdF0: 299 0
20 HD 122563 Pe* 14 02 31.8455084952 +09 41 09.944391876 7.47 7.10 6.19 5.37 4.79 G8:III:Fe-5 920 0
21 HD 128279 Pe* 14 36 48.5108525999 -29 06 46.612858494 8.64 8.63 8.00     Gw 214 0
22 HD 132475 PM* 14 59 49.7651173448 -22 00 45.815162806 8.98 9.11 8.55     F5/6V 256 1
23 HD 134169 SB* 15 08 18.0570477216 +03 55 50.144061360 8.14 8.22 7.70     F7V 220 0
24 HD 140283 Pe* 15 43 03.0971190219 -10 56 00.595693188 7.508 7.711 7.212 6.63 8.21 F9VkA5mA1 985 0
25 * w Her RG* 17 20 39.5674498400 +32 28 03.877958860 6.08 6.01 5.39 4.89 4.56 G0V 481 0
26 BD+23 3130 Pe* 17 32 41.6247211304 +23 44 11.625460773     8.9 8.6   G0III 144 0
27 * b Her SB* 18 07 01.5906608928 +30 33 43.584892488 5.52 5.67 5.13 4.61 4.28 F6V 493 0
28 HD 166913 PM* 18 16 25.6832938176 -59 24 11.239435980   8.66 8.23     F5/7Vw 142 0
29 * chi Dra SB* 18 21 03.38255 +72 43 58.2518 4.010 4.070 3.580 3.14 2.83 F7V 420 1
30 HD 338529 PM* 19 32 31.9104668184 +26 23 26.117367216   9.72   9.2   B5 213 0
31 HD 188510 PM* 19 55 09.6782304000 +10 44 27.398607828 9.30 9.41   8.5   G5V: 264 0
32 BD-18 5550 Pe* 19 58 49.7371417608 -18 12 11.140126164 10.18 10.03 9.35 9.04 8.74 CEMP-no 185 0
33 HD 189558 PM* 20 01 00.2452184673 -12 15 20.353638621   8.28 7.73     F8/G2V 202 0
34 HD 345957 PM* 20 10 48.1625876064 +23 57 54.510596568   9.36   8.6   G0V: 150 0
35 HD 194598 PM* 20 26 11.9183775668 +09 27 00.429558608 8.62 8.82 8.34 7.90 7.56 F8 315 0
36 LP 815-43 Pe* 20 38 13.2998605176 -20 26 10.850795808   11.31 10.72     ~ 82 0
37 BD+41 3931 PM* 20 55 16.7551875178 +42 18 00.680491946       10.0   G5 103 0
38 HD 201891 Pe* 21 11 59.0321495469 +17 43 39.890919730 7.74 7.88 7.37 6.91 6.59 G5V_Fe-2.5 409 0
39 HD 201889 ** 21 11 59.52350 +24 10 05.3897 8.60 8.64 8.05 7.52 7.15 G1V 163 0
40 * nu. Ind ** 22 24 36.8853892493 -72 15 19.488237466   5.94 5.29     G9VFe-3.1CH-1.5 290 0
41 CD-24 17504 Pe* 23 07 20.2534619736 -23 52 35.954286096   12.51 12.18     CEMP-no 94 0
42 HD 218502 PM* 23 08 39.3724933569 -15 03 11.944919751   8.65 8.25     F(3)w 109 0
43 HD 219617 ** 23 17 05.04375 -13 51 03.5971 8.41 8.60 8.14 7.70 7.37 F8 317 0

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