2026A&A...705A..57B

Query : 2026A&A...705A..57B

2026A&A...705A..57B - Astronomy and Astrophysics, volume 705A57 (2026/1-1)

The Gaia-ESO survey: Open clusters as tracers of galactic chemical evolution.

BOUCHER K., WORLEY C.C., GILMORE G., STONKUTE E., MAGRINI L., DRAZDAUSKAS A., BRAGAGLIA A., TAUTVAISIENE G., BENSBY T., JIMENEZ-ESTEBAN F., MARTELL S., RANDICH S. and DAMIANI F.

Abstract (from CDS):

Aims. We investigate the formation and evolutionary trajectory of the Milky Way's inner and outer galactic regions using stars from open clusters in the Gaia-ESO OC survey.
Methods. Using numerical simulations from Chempy, we leveraged Markov chain Monte Carlo sampling techniques to derive galactic evolutionary parameters for each open cluster by fitting measured abundances of elements C, N, O, Mg, Si, Ca, Ti, Fe, Mn, Zn, Y, and Ba.
Results. We find differing evolutionary histories between the inner and outer regions of the Milky Way that align with variations in the slope of the initial mass function, the rate of Type Ia supernovae, and the galactic metallicity gradient traced by open clusters.
Conclusions. Our results support established galactic formation and evolutionary theories, highlighting that the inner Galaxy had a short and intense early star formation epoch followed by reduced activity. In contrast, the outer Galaxy maintained a more sustained star formation history.

Abstract Copyright: © The Authors 2026

Journal keyword(s): Galaxy: evolution - Galaxy: formation - open clusters and associations: general

Simbad objects: 57

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Number of rows : 57
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 Cl Blanco 1 OpC 00 03 04.1 -29 48 55           ~ 380 0
2 NAME Per Arm PoG 03 30 +45.0           ~ 1672 0
3 NAME 25 Ori Group OpC 05 24 50.9 +01 41 38           ~ 195 1
4 * lam Ori ** 05 35 08.27761 +09 56 02.9611 2.45 3.48 3.66 3.72 3.89 O8IIIf+B0.5V 327 0
5 Cl Berkeley 21 OpC 05 51 44.7 +21 48 36   12.26 11.1     ~ 130 0
6 Cl Czernik 24 OpC 05 55 23.6 +20 52 27           ~ 46 0
7 Cl Berkeley 22 OpC 05 58 28.5 +07 45 39           ~ 96 0
8 NGC 2141 OpC 06 02 56.5 +10 26 57           ~ 159 0
9 NGC 2158 OpC 06 07 26.7 +24 05 53           ~ 317 0
10 Cl Berkeley 73 OpC 06 22 04.7 -06 19 13           ~ 66 0
11 NGC 2232 OpC 06 27 45.6 -04 44 26           ~ 212 0
12 NGC 2243 OpC 06 29 34.3 -31 16 58   10.12 9.4     ~ 298 0
13 Cl Trumpler 5 OpC 06 36 31.8 +09 28 03           ~ 146 0
14 NGC 2264 OpC 06 40 53.7 +09 52 32           ~ 1876 0
15 Cl Berkeley 75 OpC 06 49 00.0 -23 59 51           ~ 71 0
16 Cl Berkeley 31 OpC 06 57 37.5 +08 17 18           ~ 142 0
17 Cl Berkeley 30 OpC 06 57 45.1 +03 13 44           ~ 57 0
18 Cl Berkeley 32 OpC 06 58 06.7 +06 25 53           ~ 164 0
19 Cl Berkeley 36 OpC 07 16 24.7 -13 12 02           ~ 51 0
20 NGC 2355 OpC 07 16 59.1 +13 46 09     9.7     ~ 127 0
21 Cl Haffner 10 OpC 07 28 37.4 -15 21 42   12.60 11.5     ~ 52 0
22 Cl Czernik 30 OpC 07 31 11.1 -09 56 47           ~ 50 0
23 NGC 2425 OpC 07 38 18.4 -14 53 32           ~ 64 0
24 NGC 2420 OpC 07 38 24.6 +21 34 26   9.0 8.3     ~ 523 0
25 NGC 2451 Cl* 07 45.4 -37 58           ~ 165 1
26 Cl Berkeley 39 OpC 07 46 48.1 -04 39 59           ~ 209 1
27 NGC 2516 OpC 07 58 00.5 -60 46 36           ~ 793 0
28 Ass Vel OB 2 As* 08 09 22.478 -47 21 03.46           ~ 307 0
29 NGC 2547 OpC 08 10 01.5 -49 12 08           ~ 445 0
30 IC 2391 OpC 08 41 17.5 -53 03 00           ~ 871 0
31 ESO 313-13 OpC 08 44 51.8 -41 17 02   7.01 6.7     ~ 95 0
32 Cl Pismis 15 OpC 09 34 44.7 -48 02 36           ~ 45 0
33 ESO 92-5 OpC 10 03 08.4 -64 45 30           ~ 27 0
34 IC 2602 OpC 10 42 55.9 -64 25 22           ~ 735 0
35 Cl Trumpler 14 OpC 10 43 56.0 -59 33 07   5.70 5.5     ~ 547 0
36 NGC 3532 OpC 11 05 33.9 -58 42 13           ~ 414 0
37 NAME Cha 1 MoC 11 06 48 -77 18.0           ~ 1266 1
38 Cl Trumpler 20 OpC 12 39 33.0 -60 38 10           ~ 138 0
39 NGC 4815 OpC 12 58 00.8 -64 57 36   9.61 8.6     ~ 110 0
40 Cl Pismis 18 OpC 13 36 54.8 -62 05 29   10.30 9.7     ~ 70 0
41 NGC 6005 OpC 15 55 49.2 -57 26 23   11.90 10.7     ~ 72 0
42 Cl Trumpler 23 OpC 16 00 51.6 -53 32 20     11.2     ~ 63 0
43 NGC 6067 OpC 16 13 10.2 -54 13 48           ~ 239 0
44 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3969 1
45 NGC 6259 OpC 17 00 47.5 -44 40 54   8.85 8.0     ~ 92 0
46 NGC 6281 OpC 17 04 44.6 -37 57 08           ~ 156 0
47 NGC 6405 OpC 17 40 14.5 -32 14 16           ~ 235 0
48 IC 4665 OpC 17 46 04.0 +05 36 54           ~ 407 0
49 Cl Ruprecht 134 OpC 17 52 44.9 -29 31 48           ~ 56 0
50 NGC 6530 OpC 18 04 31 -24 21.5           ~ 443 0
51 NGC 6633 OpC 18 27 30.2 +06 38 21           ~ 423 0
52 NGC 6705 OpC 18 51 03.7 -06 16 18   6.32 5.8     ~ 442 0
53 NGC 6709 OpC 18 51 17.1 +10 20 15   7.18 6.7     ~ 145 0
54 Cl Berkeley 81 OpC 19 01 39.4 -00 27 10           ~ 93 0
55 Cl Berkeley 44 OpC 19 17 15.4 +19 32 55           ~ 60 0
56 NGC 6802 OpC 19 30 36.3 +20 15 42   10.07 8.8     ~ 115 0
57 NAME Local Arm reg ~ ~           ~ 649 0

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