2005A&A...433..185B


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.12CEST12:47:31

2005A&A...433..185B - Astronomy and Astrophysics, volume 433, 185-203 (2005/4-1)

α-, r-, and s-process element trends in the Galactic thin and thick disks.

BENSBY T., FELTZING S., LUNDSTROEM I. and ILYIN I.

Abstract (from CDS):

From a detailed elemental abundance analysis of 102 F and G dwarf stars we present abundance trends in the Galactic thin and thick disks for 14 elements (O, Na, Mg, Al, Si, Ca, Ti, Cr, Fe, Ni, Zn, Y, Ba, and Eu). Stellar parameters and elemental abundances (except for Y, Ba and Eu) for 66 of the 102 stars were presented in our previous studies (Bensby et al., 2003A&A...410..527B and 2004A&A...415..155B). The 36 stars that are new in this study extend and confirm our previous results and allow us to draw further conclusions regarding abundance trends. The s-process elements Y and Ba, and the r-element Eu have also been considered here for the whole sample for the first time. With this new larger sample we now have the following results: 1) smooth and distinct abundance trends that for the thin and thick disks are clearly separated; 2) the α-element trends for the thick disk show typical signatures from the enrichment of SNIa; 3) the thick disk stellar sample is in the mean older than the thin disk stellar sample; 4) the thick disk abundance trends are invariant with galactocentric radii (Rm); 5) the thick disk abundance trends appear to be invariant with vertical distance (Zmax) from the Galactic plane. Adding further evidence from the literaure we argue that a merger/interacting scenario with a companion galaxy to produce a kinematical heating of the stars (that make up today's thick disk) in a pre-existing old thin disk is the most likely formation scenario for the Galactic thick disk. The 102 stars have -1≲[Fe/H]≲+0.4 and are all in the solar neighbourhood. Based on their kinematics they have been divided into a thin disk sample and a thick disk sample consisting of 60 and 38 stars, respectively. The remaining 4 stars have kinematics that make them kinematically intermediate to the two disks. Their chemical abundances also place them in between the two disks. Which of the two disk populations these 4 stars belong to, or if they form a distinct population of their own, can at the moment not be settled. The 66 stars from our previous studies were observed with the FEROS spectrograph on the ESO 1.5-m telescope and the CES spectrograph on the ESO 3.6-m telescope. Of the 36 new stars presented here 30 were observed with the SOFIN spectrograph on the Nordic Optical Telescope on La Palma, 3 with the UVES spectrograph on VLT/UT2, and 3 with the FEROS spectrograph on the ESO 1.5-m telescope. All spectra have high signal-to-noise ratios (typically S/N>250) and high resolution (R∼80000, 45000, and 110000 for the SOFIN, FEROS, and UVES spectra, respectively).

Abstract Copyright:

Journal keyword(s): stars: fundamental parameters - stars: abundances - Galaxy: disk - Galaxy: formation - Galaxy: abundances - Galaxy: kinematics and dynamics

VizieR on-line data: <Available at CDS (J/A+A/433/185): table4.dat table8.dat table9.dat>

Simbad objects: 113

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Number of rows : 113

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 HD 400 PM* 00 08 40.9385088178 +36 37 37.648934145       5.9   F8IV 152 0
2 * 6 Cet PM* 00 11 15.8508998160 -15 28 04.740699873 5.35 5.38 4.89     F8VFe-0.8CH-0.5 284 0
3 HD 2454 PM* 00 28 20.0441170647 +10 11 23.308682092   6.47   5.8   F5VSr 162 0
4 * 14 Cet PM* 00 35 32.8335385951 -00 30 20.198144650   6.368 5.936     F5V 117 0
5 HD 3628 PM* 00 39 13.2653 +03 08 02.135   7.98   6.9   G3V 113 0
6 G 267-153 PM* 00 39 57.8235581267 -33 57 41.222970321   7.18 6.69     F7V 67 0
7 HD 3823 PM* 00 40 25.6702570458 -59 27 16.565812842   6.44 5.88     G0VFe-0.9CH-0.4 146 0
8 HD 3795 PM* 00 40 32.7956054102 -23 48 17.719009278   6.84 6.14     K0VFe-1.5CH-1.3 178 0
9 HD 4308 PM* 00 44 39.2675256910 -65 38 58.282490370 7.31 7.193 6.552     G6VFe-0.9 215 1
10 HD 4295 PM* 00 46 38.5048651815 +69 19 31.471257515 6.760 6.800   6.2   F3V 31 0
11 HD 4597 PM* 00 47 30.7544865350 -36 56 24.703387139   8.39 7.85     F7/8V 70 1
12 * phi02 Cet PM* 00 50 07.5885892159 -10 38 39.584811061   5.69 5.19     F7V 244 0
13 HD 6225 PM* 01 03 57.4418393517 +48 51 40.810932292   7.60 7.17     F8 23 0
14 HD 6301 PM* 01 04 27.6247224647 +29 39 31.630156885   6.634 6.202     F7IV-V 53 0
15 * 29 Cet PM* 01 07 59.6638725048 +01 59 34.980233478   7.31   5.9   G8IV/V 139 0
16 * nu. Phe PM* 01 15 11.1225892742 -45 31 54.007631265 5.65 5.54 4.96 4.47 4.11 F9VFe+0.4 230 0
17 HD 8634 SB* 01 25 35.6772862282 +23 30 41.467789638   6.625 6.187 14.22   F6V 85 0
18 * rho Psc V* 01 26 15.2627036850 +19 10 20.454593575   5.718 5.344     F2V 105 0
19 HD 9562 PM* 01 33 42.8353548073 -07 01 31.236482634 6.61 6.40 5.76     G1V 235 0
20 HD 12042 PM* 01 56 59.9846404530 -51 45 58.490027380   6.58 6.10     F8.5Fe-0.7 86 0
21 * eta Ari PM* 02 12 48.0856782200 +21 12 39.577562642       5.0   F5V 173 0
22 HD 14412 PM* 02 18 58.5046943868 -25 56 44.473476858   7.07 6.34     G8V 194 0
23 HD 15029 PM* 02 25 33.9382194053 +11 58 16.419735950       7.1   F5 42 0
24 * lam02 For PM* 02 36 58.6079324808 -34 34 40.713450652 6.67 6.45 5.79     G1V 176 1
25 HD 16397 PM* 02 38 27.8624496391 +30 48 59.859046004 7.98 7.96 7.37 6.84 6.49 G0V 137 0
26 HD 17006 PM* 02 42 08.4438019607 -46 31 27.989431339   6.985 6.094     K1III 43 0
27 * iot Hor PM* 02 42 33.4664838826 -50 48 01.056222150   5.97 5.40     F8V 340 1
28 * eps For PM* 03 01 37.6304831834 -28 05 29.376723799   6.68 5.85     G9:V 157 0
29 * 94 Cet PM* 03 12 46.4369076602 -01 11 45.949836281   5.631 5.070     F8.5V 402 1
30 HD 20407 PM* 03 15 06.3903001430 -45 39 53.360201463 7.326 7.334 6.756 6.426 6.103 G5VFe-1.2CH-1 96 0
31 * e Eri PM* 03 19 55.6509352 -43 04 11.217495 5.20 4.98 4.27 3.65 3.25 G6V 397 1
32 HD 22309 PM* 03 36 03.1584493309 +16 28 02.891319613 8.250 8.230   7.3   G0 57 0
33 HD 22879 Pe* 03 40 22.0654223510 -03 13 01.124769689 7.146 7.222 6.667 6.346 6.016 G0VmF2 434 0
34 * del Eri RS* 03 43 14.9008787 -09 45 48.208444 5.13 4.46 3.54 2.82 2.32 K0+IV 542 0
35 HD 23626 SB* 03 47 49.0212728600 +32 11 43.489948864   6.718 6.252     G0 37 0
36 HD 24616 PM* 03 53 59.4643160075 -23 08 13.471799885   7.52 6.71     G8IV/V 90 0
37 HD 25322 PM* 04 02 15.2904487776 +22 25 20.188591342   8.27 7.82     F5V 30 0
38 HD 25457 TT* 04 02 36.7451443573 -00 16 08.118566607   5.88 5.38     F7V 237 0
39 HD 27485 PM* 04 20 14.5734764888 -03 45 04.877955280   8.51 7.86     G3V 51 0
40 HD 29587 SB* 04 41 36.3164521477 +42 07 06.420947055 7.940 7.890 7.280 6.74 6.39 G2V 138 1
41 * 58 Eri BY* 04 47 36.2917607568 -16 56 04.041927355   6.14 5.50     G2.5IV-V 384 0
42 * 59 Eri * 04 48 32.5337354995 -16 19 46.148858822   6.278 5.755     F8V 66 0
43 HD 32820 PM* 05 03 53.9525915816 -41 44 41.824737874   6.824 6.303     F8V 59 0
44 * 68 Eri PM* 05 08 43.6984486634 -04 27 22.340521388   5.546 5.119     F5.5VkF4mF2 203 0
45 HD 33167 PM* 05 10 42.9197506950 +46 57 43.454603976       5.4   F5V 73 0
46 * zet Pic PM* 05 19 22.1354058924 -50 36 21.477849008   5.96 5.45     F6IV 73 0
47 HD 37739 PM* 05 41 46.7584549332 +22 52 13.257076154       7.7   F5 35 0
48 * alf Men PM* 06 10 14.4741194137 -74 45 10.963587125   5.81 5.09     G7V 248 1
49 HD 45701 PM* 06 24 26.6023843750 -63 25 44.422321250   7.12 6.46     G1V 99 0
50 HD 45184 PM* 06 24 43.8797456693 -28 46 48.416253741   7.01 6.39 6.24 8.94 G2Va 163 1
51 HD 60298 PM* 07 34 50.4099906968 +24 57 16.098846135 8.14 8.04   7.0   G0 68 0
52 HD 62301 PM* 07 44 56.1933366656 +39 33 22.916336799 7.220 7.270   6.4   F8V 120 0
53 HD 69611 PM* 08 17 29.3479423950 -03 59 22.619129726   8.32 7.74     G0V 117 0
54 HD 76932 PM* 08 58 43.9328634171 -16 07 57.805389219 6.47 6.39 5.86     G2VFe-1.8CH-1 366 0
55 HD 77408 PM* 09 03 15.7432160603 +32 52 53.169137445   7.53   6.8   F6IV 66 0
56 HD 78558 PM* 09 08 25.2378567417 -15 08 41.237446346   7.91 7.34     G0.5V 129 0
57 HD 80654 PM* 09 21 18.5167104716 +13 06 41.235222595 7.170 7.140 6.670     F8V 31 0
58 HD 130551 PM* 14 51 31.7225842858 -60 55 50.854065473   9.068 8.751     F5V 90 0
59 * nu.02 Lup PM* 15 21 48.1511171112 -48 19 03.462483973 6.35 6.30 5.65     G3/5V 232 1
60 HD 144585 PM* 16 07 03.3698772530 -14 04 16.670613953 7.22 6.98 6.32     G2V 158 0
61 HD 145148 PM* 16 09 11.2152519637 +06 22 43.291224462   6.97   5.3   K1.5IV 159 0
62 HD 147513 PM* 16 24 01.2905970257 -39 11 34.734611237 6.17 6.02 5.376     G5V 308 1
63 * zet TrA SB* 16 28 28.1396465547 -70 05 03.822057572   5.46 4.91     F9V 180 0
64 HD 149612 PM* 16 39 04.1415896072 -58 15 29.529494217 7.674 7.644 7.034 6.679 6.334 G5VFe-1.2CH-0.9 66 1
65 HD 152391 Ro* 16 52 58.8025427362 -00 01 35.116299669   7.40 6.64     G8.5Vk: 336 0
66 HD 153075 PM* 17 00 31.6443757651 -57 17 49.575190335   9.415 8.910     G2VFe-0.8CH-0.5 84 0
67 V* V2213 Oph BY* 17 05 16.8186294192 +00 42 09.217571716   6.59   5.6   F8.5IV-V 317 0
68 HD 156098 PM* 17 17 03.6455012243 -32 39 46.224493384   6.021 5.526     F6V 96 0
69 HD 156365 PM* 17 18 07.1354097841 -24 04 22.881060858   7.27 6.59     G3V 72 0
70 HD 157089 PM* 17 21 07.0567914512 +01 26 34.981760941 7.60 7.59 7.01 6.46 6.14 F8VgF8mF6 233 0
71 HD 157466 PM* 17 22 27.6461103752 +24 52 45.934455673       6.6   F8V 110 0
72 HD 157347 PM* 17 22 51.2877095327 -02 23 17.439826176   6.965 6.278     G3V 159 0
73 * 84 Her PM* 17 43 21.5646072179 +24 19 40.157353689   6.394 5.729     G2IIIb 135 0
74 * mu. Ara PM* 17 44 08.7036342277 -51 50 02.591049123   5.85 5.15     G3IV-V 465 2
75 HD 162396 PM* 17 52 52.5828939517 -41 59 47.487625525   6.74 6.20     F9VFe-0.7CH-0.4 105 0
76 V* V972 Her EB* 17 58 05.0039728798 +32 38 53.013794160   7.09 6.65     F5 43 0
77 HD 165401 SB* 18 05 37.4544371448 +04 39 25.798102148 7.443 7.399 6.786 6.432 6.09 G2V 204 0
78 HD 166435 PM* 18 09 21.3817906855 +29 57 06.165674208   7.457 6.829     G1IV 169 0
79 HD 169830 * 18 27 49.4852008378 -29 49 00.705771732   6.406 5.902 7.01   F7V 243 1
80 HD 172051 ** 18 38 53.4015065712 -21 03 06.741519593   6.518 5.860     G6V 170 1
81 HD 174160 * 18 48 16.4027582506 +23 30 53.092215837 6.62 6.672 6.181     F7V 72 0
82 HD 176377 PM* 18 58 51.0031145311 +30 10 50.314585200   7.37   6.4   G1V 101 0
83 HD 179949 BY* 19 15 33.2300861317 -24 10 45.673372382   6.772 6.237     F8V 350 1
84 * b Aql PM* 19 24 58.2002406780 +11 56 39.882312617 6.35 5.93   4.7   G7IVHdel1 455 0
85 HD 183877 PM* 19 32 40.3319928128 -28 01 11.312726275   7.83 7.15     G8VFe-1CH-0.5 87 0
86 HD 184960 PM* 19 34 19.7897154364 +51 14 11.827779462   6.21   5.4   F7V 137 0
87 HD 184985 PM* 19 37 34.4131265906 -14 18 06.491325235   5.938 5.451     F7V 85 0
88 HD 190360 PM* 20 03 37.4049065078 +29 53 48.495330996   6.44   5.2   G7IV-V 386 1
89 HD 190009 * 20 03 44.3096986231 -22 35 44.150595019   6.928 6.428     F7V 61 0
90 * del Pav PM* 20 08 43.6094697 -66 10 55.443275 4.78 4.32 3.56 2.95 2.61 G8IV 351 0
91 HD 193307 PM* 20 21 41.0361307297 -49 59 57.901102060   6.82 6.28     F9V 114 0
92 HD 197214 SB* 20 43 15.9971544063 -29 25 26.107915068 7.778 7.635 6.960 6.583 6.229 G6V 76 0
93 HD 199288 PM* 20 57 40.0679487434 -44 07 45.739637893   7.11 6.52     G2VFe-1.0 169 0
94 * 11 Aqr PM* 21 00 33.8407622602 -04 43 48.940823425   6.819 6.192     G1V 184 0
95 * gam Pav PM* 21 26 26.6048372 -65 21 58.314484 4.57 4.70 4.22 3.75 3.45 F9VFe-1.4CH-0.7 376 0
96 * 15 Peg PM* 21 52 29.9167067804 +28 47 36.751682373 5.82 5.95 5.53     F2V 225 0
97 HD 208998 PM* 22 01 36.5233496256 -53 05 36.885322194   7.70 7.13     G0V 93 0
98 HD 210277 PM* 22 09 29.8657193934 -07 32 55.163014863   8.85 8.57 7.36   G8V 297 2
99 HD 210483 PM* 22 10 26.1624878567 +18 47 49.581239842   8.16   7.2   G4 65 0
100 HD 210737 SB* 22 12 46.6755615341 -20 53 25.805196762   8.01 7.54     F5/6V 29 0
101 HD 210918 PM* 22 14 38.65336 -41 22 53.9866 7.02 6.88 6.23     G2V 177 0
102 HD 211976 * 22 20 55.7976682555 +08 11 12.268074699   6.621 6.163     F5V 84 0
103 HD 212231 PM* 22 23 14.4741852246 -25 50 32.226826056   8.47 7.86     G2V 61 0
104 HD 215110 PM* 22 42 57.9561582816 +00 24 06.757187940   8.60   7.2   G8IV 34 0
105 * rho Ind PM* 22 54 39.4829644814 -70 04 25.356610041 6.95 6.71 6.05     G1VFe+0.3 166 1
106 HD 216756 PM* 22 55 02.6472548038 +37 04 36.576170796   6.295 5.901     F4V 86 0
107 * 51 Peg Ro* 22 57 27.9804167474 +20 46 07.782240714 6.39 6.16 5.46 4.97 4.61 G2IV 1071 1
108 HD 217107 ** 22 58 15.5411942071 -02 23 43.387117210   6.919 6.163     G8IV/V 331 1
109 HD 221830 PM* 23 35 28.8946565621 +31 01 01.832810749   7.45   6.5   G2 144 0
110 V* KT Peg RS* 23 39 30.9714449782 +28 14 47.405331910   7.71   6.6   G8 85 0
111 HD 224022 PM* 23 54 38.6212339113 -40 18 00.222023224   6.60 6.03     G0V 79 0
112 HD 224233 PM* 23 56 11.4341713204 +59 46 03.387035728   8.30   7.2   G1 50 0
113 HD 224383 PM* 23 57 33.5186236762 -09 38 51.070720084   8.51 7.88     G3V 97 0

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2020.07.12-12:47:31

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