2014A&A...563A..44M


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.08CEST03:53:49

2014A&A...563A..44M - Astronomy and Astrophysics, volume 563A, 44-44 (2014/3-1)

The Gaia-ESO Survey: Abundance ratios in the inner-disk open clusters Trumpler 20, NGC 4815, NGC 6705.

MAGRINI L., RANDICH S., ROMANO D., FRIEL E., BRAGAGLIA A., SMILJANIC R., JACOBSON H., VALLENARI A., TOSI M., SPINA L., DONATI P., MAIORCA E., CANTAT-GAUDIN T., SORDO R., BERGEMANN M., DAMIANI F., TAUTVAISIENE G., BLANCO-CUARESMA S., JIMENEZ-ESTEBAN F., GEISLER D., MOWLAVI N., MUNOZ C., SAN ROMAN I., SOUBIRAN C., VILLANOVA S., ZAGGIA S., GILMORE G., ASPLUND M., FELTZING S., JEFFRIES R., BENSBY T., KOPOSOV S., KORN A.J., FLACCOMIO E., PANCINO E., RECIO-BLANCO A., SACCO G., COSTADO M.T., FRANCIOSINI E., JOFRE P., DE LAVERNY P., HILL V., HEITER U., HOURIHANE A., JACKSON R., LARDO C., MORBIDELLI L., LEWIS J., LIND K., MASSERON T., PRISINZANO L. and WORLEY C.

Abstract (from CDS):

Open clusters are key tools to study the spatial distribution of abundances in the disk and their evolution with time. Using the first release of stellar parameters and abundances of the Gaia-ESO Survey, we analyse the chemical properties of stars in three old/intermediate-age open clusters, namely NGC 6705, NGC 4815, and Trumpler 20, which are all located in the inner part of the Galactic disk at Galactocentric radius RGC∼7kpc. We aim to prove their homogeneity and to compare them with the field population. We study the abundance ratios of elements belonging to two different nucleosynthetic channels: α-elements and iron-peak elements. For each element, we analyse the internal chemical homogeneity of cluster members, and we compare the cumulative distributions of cluster abundance ratios with those of solar neighbourhood turn-off stars and of inner-disk/bulge giants. We compare the abundance ratios of field and cluster stars with two chemical evolution models that predict different α-enhancement dependences on the Galactocentric distance due to different assumptions on the infall and star-formation rates. The main results can be summarised as follows: i) cluster members are chemically homogeneous within 3σ in all analysed elements; ii) the three clusters have comparable [El/Fe] patterns within ∼1σ, but they differ in their global metal content [El/H] with NGC 4815 having the lowest metallicity; their [El/Fe] ratios show differences and analogies with those of the field population, in both the solar neighbourhood and the bulge/inner disk; iii) comparing the abundance ratios with the results of two chemical evolution models and with field star abundance distributions, we find that the abundance ratios of Mg, Ni, and Ca in NGC 6705 might require an inner birthplace, implying a subsequent variation in its RGC during its lifetime, which is consistent with previous orbit determination. Using the results of the first internal data release, we show the potential of the Gaia-ESO Survey through a homogeneous and detailed analysis of the cluster versus field populations to reveal the chemical structure of our Galaxy using a completely uniform analysis of different populations. We verify that the Gaia-ESO Survey data are able to identify the unique chemical properties of each cluster by pinpointing the composition of the interstellar medium at the epoch and place of formation. The full dataset of the Gaia-ESO Survey is a superlative tool to constrain the chemical evolution of our Galaxy by disentangling different formation and evolution scenarios.

Abstract Copyright:

Journal keyword(s): Galaxy: abundances - open clusters and associations: general - open clusters and associations: individual: Trumpler 20 - open clusters and associations: individual: NGC 4815 - globular clusters: individual: NGC 6705 - Galaxy: disk

Simbad objects: 52

goto Full paper

goto View the reference in ADS

Number of rows : 52

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 NGC 1851 GlC 05 14 06.76 -40 02 47.6   8.80 7.23     ~ 1241 0
2 IC 2391 OpC 08 40 32 -53 02.0           ~ 714 0
3 NGC 2682 OpC 08 51 18 +11 48.0           ~ 2032 0
4 IRAS 09110-6439 GlC 09 12 03.10 -64 51 48.6   7.77 5.69     ~ 1244 0
5 IC 2602 OpC 10 42 58 -64 24.0           ~ 549 0
6 * ksi Hya ** 11 33 00.1150559 -31 51 27.443449 5.17 4.47 3.54 2.84 2.36 G7IIIb 231 0
7 Cl Collinder 261 OpC 12 38 11.5 -68 22 01     10.7     ~ 156 0
8 Cl* Trumpler 20 MG 340 * 12 39 15.7724227752 -60 34 40.598393692 15.595 16.000 14.669   13.400 ~ 9 0
9 Cl* Trumpler 20 MG 770 * 12 39 25.8484300449 -60 38 27.863831479 15.870 16.270 14.928   13.624 ~ 7 0
10 Cl* Trumpler 20 MG 505 * 12 39 26.9963451918 -60 36 05.244162759 15.636 15.913 14.519   13.207 ~ 9 0
11 Cl* Trumpler 20 MG 894 * 12 39 31.3190409371 -60 39 42.270708966 15.708 16.105 14.766   13.483 ~ 7 0
12 Cl* Trumpler 20 MG 835 * 12 39 37.8195801719 -60 39 05.113951963 15.636 15.957 14.577   13.268 ~ 9 0
13 Cl* Trumpler 20 MG 346 * 12 39 44.1963452496 -60 34 41.042356146 15.776 16.070 14.704   13.388 ~ 9 0
14 Cl* Trumpler 20 MG 781 * 12 39 44.7456624627 -60 38 33.927560972 15.728 16.005 14.610   13.283 ~ 8 0
15 Cl Trumpler 20 OpC 12 39 45 -60 38.1     10.1     ~ 71 0
16 GES J12394596-6038389 * 12 39 45.9499403631 -60 38 38.918258599 15.597 15.913 14.590   13.223 ~ 10 0
17 Cl* Trumpler 20 MG 287 * 12 39 46.8951094399 -60 33 54.035188610 15.781 16.127 14.781   13.480 ~ 9 0
18 Cl* Trumpler 20 MG 795 * 12 39 47.4175876452 -60 38 41.093692999 15.731 16.070 14.712   13.423 ~ 8 0
19 Cl* Trumpler 20 MG 787 * 12 39 54.2557400647 -60 38 36.958046283 15.671 15.982 14.597   13.284 ~ 8 0
20 Cl* Trumpler 20 MG 399 * 12 39 59.7446615223 -60 35 07.189407761 15.729 16.043 14.618   13.254 ~ 9 0
21 Cl* Trumpler 20 MG 1044 * 12 40 02.7730501473 -60 41 19.175757531 16.031 16.370 14.985   13.657 ~ 8 0
22 2MASS J12572441-6455172 * 12 57 24.415 -64 55 17.30           ~ 1 0
23 2MASS J12574328-6457386 * 12 57 43.282 -64 57 38.64           ~ 1 0
24 2MASS J12575511-6458483 * 12 57 55.115 -64 58 48.31           ~ 1 0
25 2MASS J12575529-6456536 * 12 57 55.291 -64 56 53.67           ~ 1 0
26 NGC 4815 OpC 12 58 01 -64 57.6   9.61 8.6     ~ 68 0
27 GES J12580262-6456492 * 12 58 02.6165165960 -64 56 49.299990416   15.771 14.158   12.262 ~ 8 0
28 NGC 6196 GiG 16 37 53.950 +36 04 23.31   14.2       ~ 40 0
29 NAME Gal Center reg 17 45 40.04 -29 00 28.1           ~ 11535 0
30 GES J18503724-0614364 * 18 50 37.2423710671 -06 14 36.355078207   13.423 12.001     ~ 13 0
31 GES J18504737-0617184 * 18 50 47.3735074269 -06 17 18.264996304   13.381 11.652     ~ 14 0
32 2MASS J18505494-0616182 RG* 18 50 54.9440474605 -06 16 18.170368839   13.328 11.860     ~ 16 0
33 NGC 6705 1423 * 18 50 55.8203528462 -06 18 14.787648062   13.041 11.414     KIII: 23 0
34 GES J18505755-0613461 * 18 50 57.5537447399 -06 13 46.150131549   13.041 11.830     G8III: 18 0
35 2MASS J18505944-0612435 RG* 18 50 59.4382479259 -06 12 43.508254405   13.270 11.872     G8II-III 20 0
36 NGC 6705 1256 * 18 51 00.2327760369 -06 16 59.367015485   13.319 11.586     ~ 21 0
37 2MASS J18510032-0617183 RG* 18 51 00.3221200632 -06 17 18.241496947   13.542 12.081     A0 15 0
38 NGC 6705 1184 * 18 51 02.0072599526 -06 17 26.534320896   13.030 11.426     ~ 25 0
39 GES J18510289-0615301 * 18 51 02.8939038704 -06 15 30.155807624   13.467 12.014     ~ 15 0
40 2MASS J18510341-0616202 RG* 18 51 03.4143800060 -06 16 20.141770777   13.239 11.801     K2III: 15 0
41 GES J18510358-0616112 * 18 51 03.5895146085 -06 16 11.213349671   13.320 11.902     ~ 16 0
42 NGC 6705 OpC 18 51 05 -06 16.2   6.32 5.8     ~ 354 0
43 NGC 6705 916 RG* 18 51 07.8669476756 -06 17 11.894821178   13.084 11.60     ~ 25 0
44 Cl* NGC 6705 SZT 461 * 18 51 08.336 -06 16 53.23   13.202 11.736     ~ 9 0
45 TYC 5126-2775-1 * 18 51 10.1383793837 -06 15 48.685776893   12.996 11.493     K2II-III 15 0
46 2MASS J18511048-0615470 RG* 18 51 10.4881082279 -06 15 47.057996346   13.134 11.627     G8III: 14 0
47 NGC 6705 686 RG* 18 51 14.5257186991 -06 16 55.182625544   13.403 11.923     ~ 25 0
48 NGC 6705 669 * 18 51 15.3454569303 -06 18 35.970463244   13.527 11.974     K0III: 22 0
49 NGC 6705 660 RG* 18 51 15.7119797584 -06 18 14.697377046   13.297 11.807     ~ 25 0
50 GES J18512662-0614537 * 18 51 26.6280855104 -06 14 53.799174796   13.228 11.559     K2II-III 18 0
51 GES J18514130-0620125 * 18 51 41.2974434196 -06 20 12.553604928   13.348 11.849     ~ 14 0
52 NAME Galactic Bulge reg ~ ~           ~ 3389 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2014A&A...563A..44M and select 'bookmark this link' or equivalent in the popup menu


2020.07.08-03:53:49

© Université de Strasbourg/CNRS

    • Contact