2017A&A...606A..71S

Query : 2017A&A...606A..71S

2017A&A...606A..71S - Astronomy and Astrophysics, volume 606A71-71 (2017/10-1)

Zinc abundances in the Sculptor dwarf spheroidal galaxy.

SKULADOTTIR A., TOLSTOY E., SALVADORI S., HILL V. and PETTINI M.

Abstract (from CDS):

From ESO VLT/FLAMES/GIRAFFE spectra, abundance measurements of Zn have been made in ~=100 individual red giant branch (RGB) stars in the Sculptor dwarf spheroidal galaxy. This is the largest sample of individual Zn abundance measurements within a stellar system beyond the Milky Way. In the observed metallicity range, -2.7≥[Fe/H]≥-0.9, the general trend of Zn abundances in Sculptor is similar to that of α-elements. That is, super-solar abundance ratios of [Zn/Fe] at low metallicities, which decrease with increasing [Fe/H], eventually reaching subsolar values. However, at the higher metallicities in Sculptor, [Fe/H]≥-1.8, we find a significant scatter, -0.8≥[Zn/Fe]≥+0.4, which is not seen in any α-element. Our results are consistent with previous observations of a limited number of stars in Sculptor and in other dwarf galaxies. These results suggest that zinc has a complex nucleosynthetic origin, behaving neither completely like an α- nor an iron-peak element.

Abstract Copyright: © ESO, 2017

Journal keyword(s): stars: abundances - galaxies: abundances - galaxies: dwarf - galaxies: evolution - Local Group - Local Group

VizieR on-line data: <Available at CDS (J/A+A/606/A71): table2.dat table3.dat table4.dat xtargets.dat>

Nomenclature: Tables 5+7: [STS2015] ETNNNN N=16 among (Nos 0024-0408) added.

Simbad objects: 110

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Number of rows : 110
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 GB07 Scl49 RG* 00 59 08.6092477128 -33 42 29.639424852     17.975   16.89 ~ 18 0
2 GB07 Scl21 RG* 00 59 11.3462872056 -33 37 28.218156816     17.876   16.65 ~ 14 0
3 GB07 Scl40 RG* 00 59 11.8369720920 -33 41 25.393824420     17.476   16.297 ~ 16 0
4 GB07 Scl76 RG* 00 59 12.0972695640 -33 46 20.953491492     17.266 16.36 15.98 ~ 21 0
5 GB07 Scl31 RG* 00 59 15.1362866376 -33 39 43.989936516     18.060   16.9 ~ 10 0
6 GB07 Scl51 RG* 00 59 15.1497010944 -33 42 54.825947172     17.651   16.34 ~ 16 0
7 GB07 Scl45 RG* 00 59 18.8518180728 -33 42 17.661046716     17.599   16.23 ~ 18 0
8 GB07 Scl85 RG* 00 59 20.6551516032 -33 48 56.734579548     17.136   15.789 ~ 16 0
9 GB07 Scl61 RG* 00 59 20.8105516800 -33 44 04.965116928     17.210   15.985 ~ 18 0
10 GB07 Scl86 RG* 00 59 22.1275882104 -33 49 03.818775468     17.969   16.75 ~ 11 0
11 FBMC Sculptor 24 RG* 00 59 28.2992013384 -33 42 07.401951684     17.118   15.405 M1? 24 0
12 2MASS J00593045-3336050 RG* 00 59 30.4429475592 -33 36 05.177031912     17.947   16.732 ~ 21 0
13 2MASS J00593048-3339041 RG* 00 59 30.4985299992 -33 39 04.087610208     17.981   16.967 ~ 16 0
14 GB07 Scl93 RG* 00 59 35.0237052024 -33 50 55.932551700     18.235   17.184 ~ 10 0
15 GB07 Scl03 RG* 00 59 36.9963754728 -33 30 28.411757388     17.706   16.43 ~ 17 0
16 GB07 Scl20 RG* 00 59 37.2296251488 -33 37 10.669725192     17.608   16.339 ~ 16 0
17 GB07 Scl56 RG* 00 59 37.5751730520 -33 43 33.604843728     18.012   16.734 ~ 15 0
18 2MASS J00593774-3336000 RG* 00 59 37.7515021344 -33 36 00.129480048     17.541   16.19 ~ 11 0
19 GB07 Scl08 RG* 00 59 38.1221234952 -33 35 08.118471876     17.537   16.157 ~ 20 0
20 GB07 Scl10 RG* 00 59 40.4694214392 -33 35 53.980336572     17.699   16.427 ~ 15 0
21 GB07 Scl25 RG* 00 59 41.4061897224 -33 38 47.128302744     17.615   16.387 ~ 16 0
22 2MASS J00594193-3345027 RG* 00 59 41.939 -33 45 02.75     18.337     ~ 6 0
23 SCMS 1433 RG* 00 59 42.5847151584 -33 42 18.221298552   18.95 17.563   16.15 ~ 17 0
24 GB07 Scl65 RG* 00 59 44.9121116856 -33 44 35.086300224     18.126   16.829 ~ 18 0
25 2MASS J00594529-3343540 RG* 00 59 45.3196054656 -33 43 53.844320496   19.01 17.913   16.689 ~ 16 0
26 2MASS J00594641-3341233 RG* 00 59 46.4184215160 -33 41 23.404330104     17.304   15.695 ~ 24 0
27 GB07 Scl05 RG* 00 59 47.2196929152 -33 33 37.069607988     17.608   16.451 ~ 19 0
28 FBMC Sculptor 8 RG* 00 59 47.6780007792 -33 47 29.414047272     17.814   16.426 M 22 0
29 SCMS 237 RG* 00 59 49.9183006128 -33 44 05.071859160   18.92 17.827   16.57 ~ 16 0
30 2MASS J00595077-3331472 RG* 00 59 50.7907567584 -33 31 47.227464012     17.982   16.871 ~ 13 0
31 2MASS J00595228-3344546 RG* 00 59 52.2831866088 -33 44 54.732927732   18.57 17.150   15.743 ~ 20 0
32 2MASS J00595284-3345186 Ev* 00 59 52.8533649792 -33 45 18.791033400   19.13 18.023   16.907 ~ 10 0
33 SCMS 240 RG* 00 59 53.0842004544 -33 43 58.559329092   19.52 18.470   17.31 ~ 12 0
34 SCMS 1493 RG* 00 59 53.9904922272 -33 37 42.187946052   18.98 17.847   16.568 ~ 19 0
35 SCMS 287 RG* 00 59 54.2190765936 -33 40 27.064407108   18.84 17.480   16.044 ~ 21 0
36 2MASS J00595448-3337533 RG* 00 59 54.4771909632 -33 37 53.476829832   18.76 17.770   16.608 ~ 17 0
37 GB07 Scl04 RG* 00 59 55.6380103536 -33 33 24.702228000     16.890   15.806 ~ 16 0
38 SCMS 195 RG* 00 59 55.6838573184 -33 46 40.033427412   18.48 17.233   15.845 ~ 22 0
39 SCMS 203 RG* 00 59 55.8742577088 -33 45 43.659425520   19.41 18.356   17.188 ~ 16 0
40 SCMS 1499 RG* 00 59 56.6032438584 -33 36 41.785019424   18.64 17.434   16.231 ~ 16 0
41 2MASS J00595698-3344168 Ev* 00 59 56.9759849616 -33 44 16.829076984   19.54 18.271   17.052 ~ 9 0
42 2MASS J00595762-3338325 RG* 00 59 57.6067016688 -33 38 32.487799092   19.08 17.940   16.677 ~ 16 0
43 FBMC Sculptor 7 RG* 00 59 58.2472228488 -33 45 50.679322272   19.01 17.723   16.367 M? 22 0
44 SCMS 648 RG* 00 59 58.2618198936 -33 41 08.665931004   18.89 17.679   16.324 ~ 23 0
45 GB07 Scl07 RG* 00 59 58.3138727640 -33 34 40.465782840     17.983   16.7 ~ 16 0
46 SCMS 310 RG* 00 59 59.6480602464 -33 39 31.889811312   19.15 18.031   16.806 ~ 20 0
47 2MASS J01000005-3345287 RG* 01 00 00.0485730336 -33 45 28.843230708   19.28 18.328   17.277 ~ 10 0
48 GB07 Scl88 RG* 01 00 00.5007446232 -33 49 35.622812280     17.512   16.397 ~ 16 0
49 GB07 Scl34 RG* 01 00 02.2286422032 -33 40 21.002668212     18.008   16.779 ~ 14 0
50 GB07 Scl01 RG* 01 00 02.6924413920 -33 30 25.307967420     18.017   16.69 ~ 16 0
51 GB07 Scl29 RG* 01 00 03.6009724128 -33 39 27.082629936     17.607   16.233 ~ 16 0
52 SCMS 874 RG* 01 00 04.1647961880 -33 43 32.437216992   19.12 18.068   16.916 ~ 14 0
53 2MASS J01000594-3345564 RG* 01 00 05.9357621616 -33 45 56.440573956   19.02 17.964   16.715 ~ 16 0
54 SCMS 165 RG* 01 00 06.9734244432 -33 47 09.509924580   18.99 17.942   16.596 ~ 19 0
55 SCMS 1522 RG* 01 00 07.5807662184 -33 37 03.873555192   18.74 17.457   16.185 ~ 22 0
56 SCMS 1530 RG* 01 00 09.1891833792 -33 36 09.402872760   19.07 17.924   16.657 ~ 19 0
57 NAME Sculptor Dwarf Galaxy G 01 00 09.4 -33 42 32   9.79 8.6 8.81   ~ 1498 4
58 GB07 Scl36 RG* 01 00 10.3954863648 -33 41 04.745722200   19.27 18.086   16.852 ~ 16 0
59 SCMS 1314 RG* 01 00 10.4927339856 -33 49 36.752162196   18.98 17.829   16.533 ~ 15 0
60 2MASS J01001174-3344503 RG* 01 00 11.7319642224 -33 44 50.369156700   18.84 17.809   16.58 ~ 17 0
61 SCMS 1072 RG* 01 00 11.7997910808 -33 42 16.971833268   19.05 17.786   16.44 ~ 17 0
62 SCMS 1023 RG* 01 00 12.5294537376 -33 43 01.362185616   19.23 18.125   16.897 ~ 20 0
63 SCMS 1088 RG* 01 00 12.7787910984 -33 41 15.835376436   18.48 17.280   15.833 ~ 24 0
64 SCMS 1104 RG* 01 00 13.9556740320 -33 36 39.214039572   19.05 17.847   16.521 ~ 15 0
65 2MASS J01001452-3347501 RG* 01 00 14.4998771448 -33 47 50.544429900   18.85 17.936   16.877 ~ 10 0
66 SCMS 128 RG* 01 00 14.5776018744 -33 47 11.465602332   19.08 18.016   16.771 ~ 19 0
67 SCMS 1103 RG* 01 00 14.8194921864 -33 36 49.887174600   19.11 17.965   16.709 ~ 15 0
68 SCMS 1013 RG* 01 00 15.1842726864 -33 43 11.054632188   19.22 17.980   16.69 ~ 13 0
69 FBMC Sculptor 13 RG* 01 00 15.3744918792 -33 39 06.074895024   18.73 17.287   15.840 ~ 22 0
70 2MASS J01001708-3345139 RG* 01 00 17.0896241160 -33 45 13.862952864   19.14 18.152   17.140 ~ 18 0
71 SCMS 999 RG* 01 00 17.3663596296 -33 43 59.631215916   19.01 17.947   16.692 ~ 20 0
72 SCMS 123 RG* 01 00 17.6015235720 -33 46 55.084242612   19.08 18.038   16.821 ~ 16 0
73 SCMS 1113 RG* 01 00 17.7719553456 -33 35 59.739485784   18.82 17.345   15.818 ~ 21 0
74 SCMS 966 RG* 01 00 18.2971609608 -33 42 12.275880696   18.86 17.518   16.139 ~ 22 0
75 SCMS 819 RG* 01 00 18.9671355048 -33 45 14.789759148   18.74 17.677   16.437 ~ 17 0
76 2MASS J01001963-3347415 Ev* 01 00 19.6226890224 -33 47 41.549434584   19.33 18.164   16.924 ~ 8 0
77 2MASS J01002000-3345446 * 01 00 19.9773392448 -33 45 44.737645068   19.42 18.148   16.931 ~ 9 0
78 SCMS 1116 RG* 01 00 20.2979777304 -33 35 34.535838516   18.66 17.495   16.295 ~ 13 0
79 FBMC Sculptor 3 RG* 01 00 20.7588031896 -33 47 10.954559796   18.64 17.392   16.068 C? 21 0
80 GB07 Scl06 RG* 01 00 21.0879497544 -33 33 46.433808612     18.082   16.821 ~ 18 0
81 SCMS 506 RG* 01 00 21.1700352312 -33 46 01.175332044   19.17 18.004   16.7 ~ 16 0
82 2MASS J01002234-3350239 RG* 01 00 22.3298123136 -33 50 23.891305560     17.714   16.39 ~ 10 0
83 SCMS 2 RG* 01 00 22.9818529296 -33 43 02.244501012   18.94 17.485   15.982 ~ 19 0
84 SCMS 770 RG* 01 00 23.8407130248 -33 42 17.457837732   18.64 17.333   15.830 ~ 24 0
85 SCMS 796 RG* 01 00 24.6294006432 -33 44 28.870973232   18.88 17.783   16.470 ~ 21 0
86 SCMS 778 RG* 01 00 25.0460302800 -33 42 28.220051880   19.27 18.149   16.96 ~ 13 0
87 GB07 Scl92 RG* 01 00 25.3042017624 -33 50 50.659631952     17.109   15.651 ~ 16 0
88 SCMS 483 RG* 01 00 26.2903582464 -33 44 45.685727448   19.16 18.039   16.83 ~ 12 0
89 2MASS J01002944-3342561 Ev* 01 00 29.4388501776 -33 42 56.199214440   18.91 17.528   16.221 ~ 10 0
90 2MASS J01002962-3345013 Ev* 01 00 29.6382588048 -33 45 01.059992748   19.28 18.087   17.016 ~ 9 0
91 2MASS J01003039-3341439 Ev* 01 00 30.3898422768 -33 41 43.991199528           ~ 4 0
92 2MASS J01003122-3341522 Ev* 01 00 31.2305553840 -33 41 52.203010416   19.41 18.43     ~ 5 0
93 2MASS J01003294-3345241 Ev* 01 00 32.9001653976 -33 45 24.481559088   19.25 18.111   17.009 ~ 10 0
94 SCMS 65 RG* 01 00 33.8625481680 -33 44 54.401770104   18.92 17.796   16.544 ~ 16 0
95 2MASS J01003395-3340082 RG* 01 00 33.9476934528 -33 40 08.205757392   18.44 17.411   16.263 ~ 9 0
96 SCMS 10 RG* 01 00 34.0454042136 -33 39 04.630006008   19.05 17.200   15.499 ~ 18 0
97 GB07 Scl90 RG* 01 00 34.3299461520 -33 49 52.786020432     17.869   16.495 ~ 19 0
98 2MASS J01003545-3346588 Pe* 01 00 35.451 -33 46 58.80     18.159   17.022 ~ 11 0
99 GB07 Scl84 RG* 01 00 38.1285368136 -33 48 16.894682136     17.212   15.730 ~ 21 0
100 2MASS J01004191-3340091 Ev* 01 00 41.9260126920 -33 40 09.065469792   19.35 18.44   17.19 ~ 5 0
101 2MASS J01004244-3343090 RG* 01 00 42.4416724536 -33 43 09.094759788   18.42 16.983   15.576 ~ 16 0
102 FBMC Sculptor 6 RG* 01 00 42.5023936080 -33 44 23.514916092   18.7 17.208   15.701 M? 20 0
103 GB07 Scl87 RG* 01 00 44.2792960392 -33 49 18.837875928     17.478   16.006 ~ 21 0
104 GB07 Scl70 RG* 01 00 50.8765974192 -33 45 05.308669332     17.213   15.714 ~ 13 0
105 ESO 206-20A G 06 41 36.7 -50 57 58   22.14 11.0 19.47   ~ 1190 0
106 2MASS J15080497+6714007 RB? 15 08 04.9809417768 +67 14 00.719756844           ~ 24 0
107 Z 318-18 G 15 09 08.0 +67 13 21   13.60 10.6     ~ 1459 0
108 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
109 NAME Local Group GrG ~ ~           ~ 9325 0
110 NAME Galactic Bulge reg ~ ~           ~ 4794 0

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