2013A&A...559A...5B


Query : 2013A&A...559A...5B

2013A&A...559A...5B - Astronomy and Astrophysics, volume 559A, 5-5 (2013/11-1)

Manganese abundances in Galactic Bulge red giants.

BARBUY B., HILL V., ZOCCALI M., MINNITI D., RENZINI A., ORTOLANI S., GOMEZ A., TREVISAN M. and DUTRA N.

Abstract (from CDS):

Manganese is mainly produced in type II SNe during explosive silicon burning, in incomplete Si-burning regions, and depends on several nucleosynthesis environment conditions, such as mass cut between the matter ejected and falling back onto the remnant, electron and neutron excesses, mixing fallback, and explosion energy. Manganese is also produced in type Ia SNe. The aim of this work is the study of abundances of the iron-peak element Mn in 56 bulge giants, among which 13 are red clump stars. Four bulge fields along the minor axis are inspected. The study of abundances of Mn-over-Fe as a function of metallicity in the Galactic bulge may shed light on its production mechanisms. High-resolution spectra were obtained using the FLAMES+UVES spectrograph on the Very Large Telescope. The spectra were obtained within a program to observe 800 stars using the GIRAFFE spectrograph, together with the present UVES spectra. We aim at identifying the chemical evolution of manganese, as a function of metallicity, in the Galactic bulge. We find [Mn/Fe]~-0.7 at [Fe/H]~-1.3, increasing to a solar value at metallicities close to solar, and showing a spread around -0.7≲[Fe/H]≲-0.2, in good agreement with other work on Mn in bulge stars. There is also good agreement with chemical evolution models. We find no clear difference in the behaviour of the four bulge fields. Whereas [Mn/Fe] vs. [Fe/H] could be identified with the behaviour of the thick disc stars, [Mn/O] vs. [O/H] has a behaviour running parallel, at higher metallicities, compared to thick disc stars, indicating that the bulge enrichment might have proceeded differently from that of the thick disc.

Abstract Copyright:

Journal keyword(s): stars: abundances - stars: late-type - Galaxy: abundances - Galaxy: bulge

CDS comments: Table 4 : probable misprint for coordinates of [LHZ2007] BWc-6 and [LHZ2007] BWc-7 which are the same.

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 - 2023
#notes
1 Cl Collinder 261 OpC 12 38 05 -68 22.6     10.7     ~ 182 0
2 * alf Boo RG* 14 15 39.67207 +19 10 56.6730 2.46 1.18 -0.05 -1.03 -1.68 K1.5IIIFe-0.5 2257 0
3 [LHZ2007] BWc-13 * 18 03 04.4894021352 -29 58 14.599600212 20.140 18.724 16.726   14.929 ~ 9 0
4 [LHZ2007] BWc-11 * 18 03 04.6331149632 -29 59 35.764069128 19.876 18.310 16.693   14.949 ~ 9 0
5 [LHZ2007] BWc-8 * 18 03 12.3647858736 -30 03 59.537407104 20.702 18.616 16.972   15.193 ~ 10 0
6 [LHZ2007] BWc-9 * 18 03 16.5541725000 -30 03 51.805707696 20.588 18.527 16.903   15.131 ~ 10 0
7 Cl* NGC 6522 ARP 4153 * 18 03 18.8012834496 -30 01 10.427690928 19.790 18.213 16.695   15.009 ~ 10 0
8 [LHZ2007] BWc-12 * 18 03 19.9793012280 -29 58 26.214184092 20.825 18.623 16.921   15.114 ~ 10 0
9 [LHZ2007] BW-f8 * 18 03 30.5064437664 -30 01 45.216236820     16.00     ~ 6 0
10 NAME Baade Window reg 18 03.5 -30 01           ~ 586 3
11 2MASS J18033691-3007047 RG* 18 03 36.9106653672 -30 07 04.745611884     18.387   14.272 K 20 0
12 2MASS J18033716-2954227 * 18 03 37.1625416808 -29 54 22.692610440     17.994   14.29 K 14 0
13 GIBS 5714 * 18 03 50.3227528176 -30 05 32.479947816 20.985 18.587 16.838   15.010 ~ 10 0
14 UCAC4 300-175366 * 18 03 51.8482129224 -30 06 28.428365088     16.42 15.39 14.430 K 13 0
15 [LHZ2007] BWc-3 * 18 03 54.6063894048 -30 01 06.617067924 20.179 18.689 16.906   15.144 ~ 8 0
16 [LHZ2007] BWc-4 * 18 03 55.3001917320 -30 00 57.773287764 19.593 18.240 16.760   15.161 ~ 9 0
17 [LHZ2007] BWc-5 * 18 03 55.9016278608 -29 55 44.197317372 21.116 18.750 16.982   15.175 ~ 9 0
18 [LHZ2007] BWc-6 * 18 03 56.4235863912 -29 55 12.226835532 19.497 18.238 16.744   15.069 ~ 9 0
19 [LHZ2007] BWc-2 * 18 03 56.7063500976 -30 05 37.852576728 20.434 18.830 17.191   15.392 ~ 9 0
20 [LHZ2007] BW-f4 * 18 04 01.4190961200 -30 10 21.222600348     16.07   14.38 ~ 8 0
21 [LHZ2007] BW-b7 * 18 04 04.5753278904 -30 02 40.107679188     16.69   14.24 ~ 8 0
22 UCAC4 300-176252 * 18 04 05.3507591664 -30 05 53.000775888     16.95 16.06 14.42 ~ 10 0
23 2MASS J18041328-2958182 RG* 18 04 13.2871085664 -29 58 18.229131228     18.832   14.45 K 16 0
24 [LHZ2007] BW-b2 * 18 04 23.9678705568 -30 05 58.307467200     16.58   14.68 K 12 0
25 [LHZ2007] BW-f5 * 18 04 39.6273863808 -29 55 20.251816752     15.88   14.28 K 11 0
26 [LHZ2007] BW-f7 * 18 04 43.9478275704 -30 03 15.741132480     16.31   14.51 K 10 0
27 NGC 6528 GlC 18 04 49.61 -30 03 20.8   12.12 10.65     ~ 504 0
28 2MASS J18081265-2550046 RG* 18 08 12.6350577792 -25 50 04.519528584     18.490     K 10 0
29 [LHZ2007] B3-b1 * 18 08 15.8385193824 -25 42 09.855737172       15.82   K 11 0
30 2MASS J18081617-2543192 RG* 18 08 16.1746892256 -25 43 19.196413356     18.514     K 10 0
31 2MASS J18082459-2548444 RG* 18 08 24.5996840952 -25 48 44.483739336     18.915   16.488 K 12 0
32 [LHZ2007] B3-f4 * 18 08 44.2853172024 -26 00 25.093971936           K 10 0
33 2MASS J18084446-2557568 RG* 18 08 44.4651599688 -25 57 56.927789496     16.36     ~ 8 0
34 [LHZ2007] B3-b3 * 18 08 46.5270 -25 42 44.401     16.59     ~ 6 0
35 [LHZ2007] B3-f3 * 18 08 49.6267569480 -25 40 36.914490084       15.79   K 10 0
36 2MASS J18090052-2548070 RG* 18 09 00.5304214104 -25 48 06.862106124     18.345     K 11 0
37 2MASS J18091405-2556473 RG* 18 09 14.0592043008 -25 56 47.309640216     16.63     ~ 8 0
38 [LHZ2007] B3-f2 * 18 09 15.6072180024 -25 57 32.729925420           K 9 0
39 NGC 6553 GlC 18 09 15.68 -25 54 27.9   9.08       ~ 581 0
40 2MASS J18091653-2549261 RG* 18 09 16.5364901832 -25 49 26.057581428     18.659   16.355 K 13 0
41 [LHZ2007] B3-f5 * 18 09 18.5310 -25 43 37.403     16.61     ~ 6 0
42 [LHZ2007] B3-f7 * 18 09 23.6917185792 -25 50 38.189479848           K 10 0
43 [LHZ2007] B6-b6 * 18 09 49.1021687256 -31 50 07.637646156     17.793   14.39 K 12 0
44 [LHZ2007] B6-b1 * 18 09 50.4778882656 -31 40 51.665028312     17.995   14.29 K 12 0
45 [LHZ2007] B6-b8 * 18 09 55.9582700568 -31 45 46.287594144     18.397   16.290 K 14 0
46 [LHZ2007] B6-f8 * 18 09 56.8499945520 -31 43 22.561115196     17.263   14.04 K 12 0
47 [LHZ2007] B6-f1 * 18 10 04.4608354104 -31 41 45.275386416     17.901   15.960 K 14 0
48 [LHZ2007] B6-b4 * 18 10 07.7796048816 -31 52 41.407211028     17.842   14.40 K 12 0
49 [LHZ2007] B6-f2 * 18 10 11.5133382168 -31 48 19.191459348     15.91   14.09 ~ 9 0
50 [LHZ2007] B6-f3 * 18 10 17.7263996304 -31 41 55.191925176     17.255   14.17 K 12 0
51 [LHZ2007] B6-b3 * 18 10 19.0674139272 -31 40 28.174734948     17.705   14.47 K 12 0
52 [LHZ2007] B6-b2 * 18 10 33.9871310904 -31 49 09.078453300     16.40   14.23 ~ 9 0
53 [LHZ2007] B6-b5 * 18 10 37.3810094112 -31 40 29.143049772     17.711   14.37 K 12 0
54 [LHZ2007] B6-f5 * 18 10 41.5177756536 -31 40 11.884993968     17.632   14.17 K 12 0
55 [LHZ2007] B6-f7 * 18 10 52.3070057160 -31 46 42.144199248     17.841   15.950 K 14 0
56 [LHZ2007] BL-1 * 18 34 58.5116755944 -34 33 15.241710240       15.20   K 9 0
57 [LHZ2007] BL-4 * 18 35 21.1118561256 -34 44 48.100128864           K 9 0
58 [LHZ2007] BL-3 * 18 35 27.5111505192 -34 31 59.344885488           K 9 0
59 [LHZ2007] BL-7 * 18 35 57.2601682896 -34 38 04.693853292           K 9 0
60 [LHZ2007] BL-5 * 18 36 01.0025929368 -34 31 47.930833020           K 9 0
61 NAME SDG G 18 55 03.1 -30 28 42   4.5 3.6     ~ 2031 2
62 NAME Galactic Bulge reg ~ ~           ~ 4012 0

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2023.01.31-01:52:47

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