2019ApJ...875..142X

Query : 2019ApJ...875..142X

2019ApJ...875..142X - Astrophys. J., 875, 142-142 (2019/April-3)

NLTE analysis of copper abundances in the Galactic bulge stars.

XU X.D., SHI J.R. and YAN H.L.

Abstract (from CDS):

Based on the medium-high resolution (R ∼ 20,000), modest signal-to-noise ratio (S/N >= 70) FLAMES-GIRAFFE spectra, we investigated the copper abundances of 129 red giant branch stars in the Galactic bulge with [Fe/H] from -1.14 to 0.46 dex. The copper abundances are derived from both local thermodynamic equilibrium (LTE) and nonlocal thermodynamic equilibrium (NLTE) with the spectral synthesis method. We find that the NLTE effects for Cu I lines show a clear dependence on metallicity, and they gradually increase with decreasing [Fe/H] for our sample stars. Our results indicate that the NLTE effects of copper are important not only for metal-poor stars but also for supersolar metal-rich ones and the LTE results underestimate the Cu abundances. We note that the [Cu/Fe] trend of the bulge stars is similar to that of the Galactic disk stars spanning the metallicity range of -1.14 < [Fe/H] < 0.0 dex, and the [Cu/Fe] ratios increase with increasing metallicity when [Fe/H] is from ∼-1.2 to ∼-0.5 dex, favoring a secondary (metallicity-dependent) production of Cu.

Abstract Copyright: © 2019. The American Astronomical Society.

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

VizieR on-line data: <Available at CDS (J/ApJ/875/142): table2.dat>

Simbad objects: 135

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Number of rows : 135
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 ESO 455-11 GlC 17 31 05.20 -29 58 54.0           ~ 208 0
2 NGC 6522 GlC 18 03 34.08 -30 02 02.3           ~ 569 0
3 NGC 6528 GlC 18 04 49.61 -30 03 20.8   12.12 10.65     ~ 561 0
4 2MASS J18080414-2553236 RG* 18 08 04.1393238072 -25 53 23.735619204           ~ 2 0
5 2MASS J18080465-2554356 RG* 18 08 04.6423180248 -25 54 35.720102592           ~ 2 0
6 2MASS J18080523-2553111 RG* 18 08 05.2163132832 -25 53 11.058689400           ~ 2 0
7 2MASS J18080726-2553356 RG* 18 08 07.2622807920 -25 53 35.681903088           ~ 2 0
8 2MASS J18080978-2553024 RG* 18 08 09.7783242000 -25 53 02.520051360           ~ 2 0
9 2MASS J18081026-2547354 RG* 18 08 10.2634384824 -25 47 35.482758000           ~ 2 0
10 2MASS J18081265-2550046 RG* 18 08 12.6350577792 -25 50 04.519528584     18.490     K 13 0
11 [ZHL2008] OGLE 187067C5 RG* 18 08 13.670 -25 52 26.70           ~ 2 0
12 2MASS J18081403-2548290 RG* 18 08 14.0278781208 -25 48 29.018549556           ~ 2 0
13 2MASS J18081617-2543192 RG* 18 08 16.1746892256 -25 43 19.196413356     18.514     K 13 0
14 2MASS J18082099-2551174 RG* 18 08 20.9862706800 -25 51 17.559217152           ~ 2 0
15 2MASS J18082120-2557000 RG* 18 08 21.2010776304 -25 57 00.144860112           ~ 2 0
16 2MASS J18082127-2555048 RG* 18 08 21.2751935616 -25 55 04.991663064           ~ 2 0
17 2MASS J18082150-2544574 RG* 18 08 21.5031713976 -25 44 57.451259220           ~ 2 0
18 UCAC4 321-135930 RG* 18 08 21.7230844824 -25 51 42.224486400       15.97   ~ 2 0
19 2MASS J18082290-2552064 RG* 18 08 22.8995571360 -25 52 06.526415244           ~ 2 0
20 2MASS J18082340-2553475 RG* 18 08 23.4166867584 -25 53 47.512044816           ~ 2 0
21 2MASS J18082369-2544268 RG* 18 08 23.6900203200 -25 44 26.810284740           ~ 2 0
22 2MASS J18082459-2548444 RG* 18 08 24.5996840952 -25 48 44.483739336     18.915   16.488 K 16 0
23 2MASS J18082585-2552269 RG* 18 08 25.8475147128 -25 52 27.076726776           ~ 2 0
24 2MASS J18082809-2553354 RG* 18 08 28.0975363248 -25 53 35.512868580           ~ 2 0
25 2MASS J18082835-2547382 RG* 18 08 28.3523258352 -25 47 38.247367452           ~ 2 0
26 2MASS J18082878-2554167 RG* 18 08 28.7857598304 -25 54 16.783607268           ~ 2 0
27 2MASS J18082917-2553116 RG* 18 08 29.1725984592 -25 53 11.772912264           ~ 2 0
28 2MASS J18083011-2544007 RG* 18 08 30.1159126296 -25 44 00.653170020           ~ 2 0
29 2MASS J18083049-2551279 RG* 18 08 30.4849706208 -25 51 27.923752548           ~ 2 0
30 2MASS J18083133-2548449 RG* 18 08 31.3368259656 -25 48 44.941069296           ~ 2 0
31 2MASS J18083464-2553563 RG* 18 08 34.6415905152 -25 53 56.415448644           ~ 2 0
32 2MASS J18083582-2543214 RG* 18 08 35.8210648536 -25 43 21.429879312           ~ 2 0
33 2MASS J18083637-2547256 RG* 18 08 36.3754102584 -25 47 25.303741656           ~ 2 0
34 2MASS J18084072-2555101 RG* 18 08 40.7201688072 -25 55 10.228943964           ~ 2 0
35 2MASS J18084123-2551146 RG* 18 08 41.2206668064 -25 51 14.314125204           ~ 2 0
36 2MASS J18084160-2553245 RG* 18 08 41.5994162304 -25 53 24.696531924           ~ 2 0
37 2MASS J18084381-2545145 RG* 18 08 43.8057860472 -25 45 14.510027052           ~ 2 0
38 [BH2018] J272.183958-25.915722 RG* 18 08 44.150 -25 54 56.60           ~ 3 0
39 2MASS J18084424-2552014 RG* 18 08 44.2220448360 -25 52 01.326024084           ~ 2 0
40 2MASS J18084446-2557568 RG* 18 08 44.4651599688 -25 57 56.927789496     16.36     ~ 9 0
41 2MASS J18084514-2557293 RG* 18 08 45.1372098720 -25 57 29.399520888           ~ 3 0
42 2MASS J18084690-2554462 RG* 18 08 46.8998055384 -25 54 46.269224064           ~ 3 0
43 2MASS J18084966-2547388 RG* 18 08 49.6601610264 -25 47 38.830334640           ~ 3 0
44 2MASS J18085002-2555460 RG* 18 08 50.0141905248 -25 55 46.015048884           ~ 3 0
45 2MASS J18085263-2554587 RG* 18 08 52.6172101728 -25 54 58.814727984           ~ 3 0
46 2MASS J18085354-2553128 RG* 18 08 53.5411397784 -25 53 12.809902596           ~ 3 0
47 2MASS J18085430-2552332 RG* 18 08 54.2973310152 -25 52 33.161702448           ~ 3 0
48 2MASS J18085454-2545569 RG* 18 08 54.5322737592 -25 45 57.024160920           ~ 2 0
49 2MASS J18085530-2552488 RG* 18 08 55.2950826288 -25 52 48.706897044           ~ 3 0
50 2MASS J18085574-2554094 RG* 18 08 55.7516644968 -25 54 09.309957156           ~ 3 0
51 2MASS J18085927-2557448 RG* 18 08 59.2755932712 -25 57 44.957160612           ~ 3 0
52 2MASS J18090052-2548070 RG* 18 09 00.5304214104 -25 48 06.862106124     18.345     K 16 0
53 2MASS J18090118-2555154 RG* 18 09 01.1845220232 -25 55 15.317823540           ~ 3 0
54 2MASS J18090473-2545129 RG* 18 09 04.7510276256 -25 45 12.879806652           ~ 2 0
55 2MASS J18090629-2551235 RG* 18 09 06.2950338984 -25 51 23.396106780           ~ 3 0
56 2MASS J18090661-2553404 RG* 18 09 06.6379708008 -25 53 40.123257612           ~ 3 0
57 2MASS J18090688-2544307 RG* 18 09 06.8829566808 -25 44 30.651549936           ~ 5 0
58 2MASS J18090837-2554327 RG* 18 09 08.3763201264 -25 54 32.587754904           ~ 3 0
59 2MASS J18091022-2552134 RG* 18 09 10.2213294528 -25 52 13.381848876           ~ 3 0
60 2MASS J18091320-2553328 RG* 18 09 13.2172785480 -25 53 32.597387124           ~ 3 0
61 2MASS J18091405-2556473 RG* 18 09 14.0592043008 -25 56 47.309640216     16.63     ~ 9 0
62 NGC 6553 GlC 18 09 15.68 -25 54 27.9   9.08       ~ 644 0
63 2MASS J18091628-2553550 RG* 18 09 16.28256 -25 53 55.0752           ~ 3 0
64 2MASS J18091653-2549261 RG* 18 09 16.5364901832 -25 49 26.057581428     18.659   16.355 K 16 0
65 2MASS J18092018-2555283 RG* 18 09 20.1958561032 -25 55 28.418658600           ~ 3 0
66 NGC 6558 GlC 18 10 17.6 -31 45 50           ~ 265 0
67 2MASS J18343096-3438299 RG* 18 34 30.9655643880 -34 38 29.987769336     15.40   14.01 ~ 3 0
68 2MASS J18343398-3438536 RG* 18 34 33.9886050840 -34 38 53.611481688     15.06   13.91 ~ 3 0
69 2MASS J18344397-3438441 RG* 18 34 43.9804597056 -34 38 44.241384120     15.93   14.69 ~ 3 0
70 2MASS J18344539-3436070 RG* 18 34 45.3965887320 -34 36 07.068987936     15.90   14.63 ~ 3 0
71 2MASS J18344892-3432327 RG* 18 34 48.9263616504 -34 32 32.736270336     15.43   14.13 ~ 3 0
72 2MASS J18345053-3433226 RG* 18 34 50.5349567904 -34 33 22.686933168     15.76   14.61 ~ 3 0
73 2MASS J18345072-3428380 RG* 18 34 50.7184187520 -34 28 38.049138264     15.18   13.82 ~ 3 0
74 2MASS J18345238-3437018 RG* 18 34 52.3886019984 -34 37 01.900301916     15.58   14.30 ~ 3 0
75 2MASS J18345260-3439317 RG* 18 34 52.5994854288 -34 39 31.736876148     15.43   14.10 ~ 3 0
76 2MASS J18345442-3430566 RG* 18 34 54.4239608376 -34 30 56.587368780     15.97   14.64 ~ 3 0
77 2MASS J18345512-3442462 RG* 18 34 55.1243164608 -34 42 46.233861084     15.78   14.32 ~ 3 0
78 2MASS J18345752-3430213 RG* 18 34 57.5228469960 -34 30 21.387765312     15.78   14.48 ~ 3 0
79 2MASS J18345778-3431359 RG* 18 34 57.7764487464 -34 31 35.970416976     16.15   14.83 ~ 3 0
80 2MASS J18345825-3443440 RG* 18 34 58.2581848272 -34 43 44.061518316     15.53   14.08 ~ 3 0
81 2MASS J18345884-3438175 RG* 18 34 58.8437997624 -34 38 17.583167004     15.25   13.98 ~ 3 0
82 2MASS J18350115-3441540 RG* 18 35 01.1566036320 -34 41 54.042371088     16.02   14.76 ~ 3 0
83 2MASS J18350180-3442404 RG* 18 35 01.8121239960 -34 42 40.502694780     15.87   14.54 ~ 3 0
84 2MASS J18350301-3445053 RG* 18 35 03.0199659696 -34 45 05.369274756     15.47   14.26 ~ 3 0
85 2MASS J18350342-3437243 RG* 18 35 03.4286778672 -34 37 24.413164788     15.70   14.38 ~ 3 0
86 2MASS J18350358-3429453 RG* 18 35 03.5879958192 -34 29 45.328125228     15.49   14.09 ~ 3 0
87 2MASS J18350642-3439420 RG* 18 35 06.4213428432 -34 39 42.102605664     15.87   14.59 ~ 3 0
88 2MASS J18350909-3434346 RG* 18 35 09.0971726280 -34 34 34.654135980     15.76   14.53 ~ 3 0
89 2MASS J18350948-3429282 RG* 18 35 09.4780278816 -34 29 28.245092136     15.95   14.66 ~ 3 0
90 2MASS J18351222-3438453 RG* 18 35 12.2221706832 -34 38 45.378317256     15.31   13.98 ~ 3 0
91 2MASS J18351228-3441180 RG* 18 35 12.2889574176 -34 41 18.084609780     16.08   14.78 ~ 3 0
92 2MASS J18351318-3446482 RG* 18 35 13.1798674992 -34 46 48.321223104     15.71   14.37 ~ 3 0
93 2MASS J18351357-3427240 RG* 18 35 13.5666497640 -34 27 24.076126728     16.13   14.62 ~ 3 0
94 2MASS J18351488-3436002 RG* 18 35 14.8877832672 -34 36 00.276032700     15.50   14.21 ~ 3 0
95 UCAC4 277-188955 RG* 18 35 15.2433543408 -34 46 41.251487988     16.06 15.30 14.49 ~ 4 0
96 2MASS J18351698-3444595 RG* 18 35 16.9879591392 -34 44 59.502953040     15.73   14.41 ~ 7 0
97 2MASS J18351799-3428093 RG* 18 35 17.9877121608 -34 28 09.411757896     15.10   13.68 ~ 10 0
98 2MASS J18351867-3437309 RG* 18 35 18.6761127432 -34 37 30.997625412     16.04   14.81 ~ 3 0
99 2MASS J18351942-3429266 RG* 18 35 19.4200988640 -34 29 26.732110056     15.46   14.15 ~ 3 0
100 2MASS J18352004-3438289 RG* 18 35 20.0451406848 -34 38 28.959459864     16.15   14.67 ~ 3 0
101 2MASS J18352116-3426510 RG* 18 35 21.1647619680 -34 26 51.069898104     16.08   14.93 ~ 3 0
102 2MASS J18352151-3431018 RG* 18 35 21.5147666832 -34 31 01.899485328     16.25   14.88 ~ 3 0
103 2MASS J18352206-3429112 RG* 18 35 22.0561720848 -34 29 11.242841100     15.07   13.72 ~ 10 0
104 2MASS J18353072-3447426 RG* 18 35 30.7208855520 -34 47 42.604032228     15.62   14.39 ~ 3 0
105 2MASS J18353609-3447564 RG* 18 35 36.0946042992 -34 47 56.523086448     15.59   14.19 ~ 3 0
106 2MASS J18353713-3445344 RG* 18 35 37.1307011976 -34 45 34.446784320     15.86   14.63 ~ 3 0
107 2MASS J18354037-3449160 RG* 18 35 40.3717511904 -34 49 16.098448152     15.11   13.94 ~ 5 0
108 2MASS J18354105-3444059 RG* 18 35 41.0503496304 -34 44 05.969152572     15.71   14.61 ~ 3 0
109 2MASS J18354156-3447486 RG* 18 35 41.5595756568 -34 47 48.738163380     15.77   14.40 ~ 3 0
110 2MASS J18354805-3447154 RG* 18 35 48.0556989048 -34 47 15.522522396     15.89   14.41 ~ 3 0
111 2MASS J18354807-3446257 RG* 18 35 48.0700623120 -34 46 25.699871064     15.10   13.84 ~ 3 0
112 2MASS J18354937-3431562 RG* 18 35 49.3717165992 -34 31 56.125075188     15.86   14.75 ~ 3 0
113 2MASS J18355135-3445453 RG* 18 35 51.3572239416 -34 45 45.395182080     15.68   14.49 ~ 3 0
114 2MASS J18355267-3436435 RG* 18 35 52.6729609464 -34 36 43.487708040     15.95   14.71 ~ 3 0
115 2MASS J18355560-3445217 RG* 18 35 55.6078901976 -34 45 21.783590784     15.40   14.16 ~ 3 0
116 2MASS J18355601-3433364 RG* 18 35 56.0159926032 -34 33 36.368542404     15.93   14.40 ~ 6 0
117 2MASS J18355625-3436545 RG* 18 35 56.2523017992 -34 36 54.531159660     16.09   14.73 ~ 3 0
118 2MASS J18355679-3434481 RG* 18 35 56.7948507264 -34 34 48.152549892     15.29   13.76 ~ 14 0
119 2MASS J18355884-3430461 RG* 18 35 58.8459039816 -34 30 46.093384404     15.81   14.54 ~ 3 0
120 2MASS J18360198-3430369 RG* 18 36 01.9884938544 -34 30 36.817609140     15.49   14.32 ~ 3 0
121 2MASS J18360752-3431511 RG* 18 36 07.5286194288 -34 31 51.102907644     15.83   14.58 ~ 3 0
122 2MASS J18360757-3437029 RG* 18 36 07.5718934016 -34 37 02.931977820     16.07   14.77 ~ 3 0
123 2MASS J18360799-3440158 RG* 18 36 07.9897919208 -34 40 15.918543444     15.83   14.45 ~ 3 0
124 2MASS J18360886-3445437 RG* 18 36 08.8728513600 -34 45 43.680792060     15.32   14.08 ~ 3 0
125 2MASS J18360927-3446233 RG* 18 36 09.2769838440 -34 46 23.386061496     15.63   14.17 ~ 3 0
126 2MASS J18361008-3437330 RG* 18 36 10.0910463432 -34 37 33.018677472     15.79   14.51 ~ 3 0
127 2MASS J18361156-3432060 RG* 18 36 11.5723783608 -34 32 06.022688424     15.85   14.42 ~ 3 0
128 2MASS J18361236-3440076 RG* 18 36 12.3662914680 -34 40 07.676782356     15.96   14.85 ~ 3 0
129 2MASS J18361248-3431515 RG* 18 36 12.4909747512 -34 31 51.503774556     16.22   14.79 ~ 3 0
130 2MASS J18361461-3439566 RG* 18 36 14.6189991720 -34 39 56.624437656     16.16   14.82 ~ 3 0
131 2MASS J18361669-3442257 RG* 18 36 16.6971980736 -34 42 25.705161216     15.79   14.53 ~ 3 0
132 2MASS J18361784-3435209 RG* 18 36 17.8448385480 -34 35 21.000461964     15.67   14.50 ~ 3 0
133 2MASS J18361928-3441470 RG* 18 36 19.2914713440 -34 41 47.078494692     15.80   14.59 ~ 3 0
134 2MASS J18362357-3437379 RG* 18 36 23.5786595280 -34 37 37.840942632     15.28   14.14 ~ 3 0
135 NAME Galactic Bulge reg ~ ~           ~ 4794 0

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