2023A&A...670A.106C

Query : 2023A&A...670A.106C

2023A&A...670A.106C - Astronomy and Astrophysics, volume 670A106 (2023/2-1)

The cerium content of the Milky Way as revealed by Gaia DR3 GSP-Spec abundances.

CONTURSI G., DE LAVERNY P., RECIO-BLANCO A., SPITONI E., PALICIO P.A., POGGIO E., GRISONI V., CESCUTTI G., MATTEUCCI F., SPINA L., ALVAREZ M.A., KORDOPATIS G., ORDENOVIC C., ORESHINA-SLEZAK I. and ZHAO H.

Abstract (from CDS):


Context. The recent Gaia third data release contains a homogeneous analysis of millions of high-quality Radial Velocity Spectrometer (RVS) stellar spectra by the GSP-Spec module. This led to the estimation of millions of individual chemical abundances and allows us to chemically map the Milky Way. The published GSP-Spec abundances include three heavy elements produced by neutron-captures in stellar interiors: Ce, Zr, and Nd.
Aims. We study the Galactic content in cerium based on these Gaia/RVS data and discuss the chemical evolution of this element.
Methods. We used a sample of about 30 000 local thermal equilibrium Ce abundances, selected after applying different combinations of GSP-Spec flags. Based on the Gaia DR3 astrometric data and radial velocities, we explore the cerium content in the Milky Way and, in particular, in its halo and disc components.
Results. The high quality of the Ce GSP-Spec abundances is quantified through literature comparisons. We found a rather flat [Ce/Fe] versus [M/H] trend. We also found a flat radial gradient in the disc derived from field stars and, independently, from about 50 open clusters. This agrees with previous studies. The [Ce/Fe] vertical gradient was also estimated. We also report an increasing [Ce/Ca] versus [Ca/H] in the disc, illustrating the late contribution of asymptotic giant branch stars with respect to supernovae of type II. Our cerium abundances in the disc, including the young massive population, are well reproduced by a new three-infall chemical evolution model. In the halo population, the M 4 globular cluster is found to be enriched in cerium. Moreover, 11 stars with cerium abundances belonging to the Thamnos, Helmi Stream, and Gaia-Sausage-Enceladus accreted systems were identified from chemo-dynamical diagnostics. We found that the Helmi Stream might be slightly underabundant in cerium compared to the two other systems.
Conclusions. This work illustrates the high quality of the GSP-Spec chemical abundances, which significantly contribute to unveiling the heavy-element evolution history of the Milky Way.

Abstract Copyright: © The Authors 2023

Journal keyword(s): Galaxy: abundances - stars: abundances - Galaxy: disk - Galaxy: halo - Galaxy: evolution

Simbad objects: 74

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Number of rows : 74
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 UBC 183 OpC 00 19 59.7 +55 43 15           ~ 23 0
2 NAME COIN-Gaia 30 OpC 01 24 29.3 +70 30 09           ~ 23 0
3 Cl Collinder 463 OpC 01 48 35.6 +71 44 28           ~ 70 0
4 Cl Stock 2 OpC 02 15 47.8 +59 33 12           ~ 155 0
5 Cl Trumpler 2 OpC 02 36 14.9 +55 54 32           ~ 124 0
6 [KPR2005] 11 OpC 03 32 18.3 +44 51 57           ~ 48 0
7 UBC 4 OpC 04 04 19.3 +35 17 22           ~ 18 0
8 NGC 1545 OpC 04 20 53.3 +50 11 32   7.2 6.2     ~ 121 0
9 ASAS J044411+0249.1 LP* 04 44 11.2994160168 +02 49 03.764445960   13.25 11.57     ~ 5 0
10 NGC 1647 OpC 04 46 00.4 +19 05 06   6.82 6.4     ~ 189 0
11 NGC 1662 OpC 04 48 48.5 +10 52 46   7.0 6.4     ~ 149 0
12 NGC 1750 OpC 05 03 49.8 +23 40 41           ~ 76 1
13 [CKS2019] COIN-Gaia 26 OpC 05 35 07.0 +15 43 12           ~ 18 0
14 NGC 2168 OpC 06 09 07.5 +24 20 15           ~ 604 0
15 [FSR2007] 0746 OpC 06 20 14.8 +46 43 12           ~ 46 0
16 M 41 OpC 06 46 03.1 -20 43 07   4.89 4.5     ~ 308 0
17 NGC 2281 OpC 06 48 19.7 +41 02 35   6.05 5.4     ~ 182 0
18 Cl Gulliver 21 OpC 07 08 04.8 -25 25 20           ~ 33 0
19 UPK 431 OpC 07 12 50.9 -02 39 49           ~ 14 0
20 NGC 2447 OpC 07 44 34.6 -23 51 22           ~ 170 1
21 NGC 2477 OpC 07 52 11.4 -38 32 47   6.64 5.8     ~ 314 0
22 TYC 2964-1526-1 Pe* 07 59 45.1305319440 +40 12 42.439311432   12.74 11.69 10.8   ~ 12 0
23 NGC 2506 OpC 08 00 02.3 -10 46 22   8.28 7.6     ~ 313 0
24 NGC 2632 OpC 08 39 58.4 +19 36 33           ~ 1733 0
25 NGC 2669 OpC 08 46 29.5 -52 55 05   6.35 6.1     ~ 81 0
26 NGC 2682 OpC 08 51 23.5 +11 48 54           ~ 2528 0
27 2MASS J09034712+4149437 RG* 09 03 47.1368408448 +41 49 43.616635104   11.30 9.95     M 4 0
28 Cl Platais 8 OpC 09 06 04.4 -58 25 09           ~ 97 0
29 TYC 2499-1050-1 * 09 19 22.4625022152 +36 58 40.539861408   11.87 11.04     ~ 1 0
30 IC 2488 OpC 09 27 28.6 -57 00 45           ~ 75 0
31 BD+12 2074 * 09 38 55.3867465392 +12 12 48.937011948   11.37 9.90     K0 3 0
32 NGC 3114 OpC 10 01 55.0 -60 02 16   4.47 4.2     ~ 213 0
33 NGC 3532 OpC 11 05 33.9 -58 42 13           ~ 414 0
34 CD-48 6499 PM* 11 26 59.2634332392 -49 07 14.689860276   12.388 11.383     ~ 10 0
35 [KPR2005] 68 OpC 11 59 54.6 -60 39 59           ~ 38 0
36 [KPR2005] 71 OpC 12 20 22.3 -67 31 57           ~ 37 0
37 Cl Collinder 258 OpC 12 27 10.8 -60 46 13   7.39 7.1     ~ 76 1
38 NGC 5316 OpC 13 54 02.6 -61 53 05   6.08 6.0     ~ 109 0
39 NGC 5662 OpC 14 34 55.5 -56 40 41   6.18 5.5     ~ 136 0
40 HD 130289 PM* 14 46 14.5400113968 +36 25 52.519538172       7.0   K0 17 0
41 NGC 5749 OpC 14 48 46.6 -54 30 43     8.8     ~ 69 0
42 BD+30 2611 Pe* 15 06 53.8282684752 +30 00 36.941373756 11.50 10.37 9.13     G8III 152 0
43 M 5 GlC 15 18 33.22 +02 04 51.7     5.95     ~ 2095 0
44 HD 142614 * 15 55 15.3831500928 +08 13 27.843694248   10.31 9.16     K0 7 0
45 2MASS J16231442-2636055 RG* 16 23 14.4181955592 -26 36 05.547999564 14.64 12.73 10.88 9.80 9.04 ~ 46 0
46 CD-26 11312 RG* 16 23 23.8093956576 -26 34 29.821786140 14.75 12.63 10.76   8.51 ~ 38 0
47 M 4 GlC 16 23 35.22 -26 31 32.7           ~ 1978 0
48 NGC 6121 261 RG* 16 23 39.2711924040 -26 33 06.121074240   12.718 10.776   8.620 ~ 47 0
49 2MASS J16240301-2624034 AB* 16 24 03.0209319576 -26 24 03.464563248   12.571 10.859   8.967 ~ 45 0
50 NGC 6124 OpC 16 25 18.6 -40 39 45   6.70 5.8     ~ 91 0
51 NGC 6281 OpC 17 04 44.6 -37 57 08           ~ 156 0
52 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
53 Cl Collinder 350 OpC 17 47 54.6 +01 31 22     6.1     ~ 73 0
54 NGC 6475 OpC 17 53 44.1 -34 49 36           ~ 413 0
55 UPK 7 OpC 18 27 07.8 -17 20 51           ~ 11 0
56 NGC 6633 OpC 18 27 30.2 +06 38 21           ~ 423 0
57 IC 4725 OpC 18 31 47.5 -19 07 37           ~ 239 0
58 UPK 53 OpC 19 14 13.3 +14 24 50           ~ 15 0
59 NGC 6774 OpC 19 16 17.6 -16 20 45           ~ 258 0
60 Cl Stock 1 OpC 19 36 35.9 +25 07 31     5.3     ~ 72 0
61 NGC 6819 OpC 19 41 18.3 +40 11 19   8.21 7.3     ~ 719 0
62 Cl Alessi 44 OpC 19 42 05.0 +01 26 22           ~ 42 0
63 UCAC2 1915313 * 19 53 41.6219542032 -69 20 25.126292364   13.372 11.815 11.36 10.26 ~ 5 0
64 [KPR2005] 111 OpC 20 11 31.0 +37 30 18           ~ 38 0
65 [KPR2005] 112 OpC 20 16 31.4 +52 03 32           ~ 44 0
66 BD+00 4539 PM* 20 34 12.4657856544 +01 16 45.354268056   10.73 9.45     K2 3 0
67 Cl Roslund 7 OpC 20 52 56.3 +37 52 06           ~ 42 0
68 NGC 7082 OpC 21 28 45.5 +47 06 13   7.70 7.2     ~ 65 0
69 UPK 167 OpC 22 28 29.7 +49 49 56           ~ 13 0
70 UBC 394 OpC 22 55 13.7 +59 16 11           ~ 12 0
71 2MASS J23435004+0449476 LP* 23 43 50.0560797888 +04 49 47.664482664   11.44 9.94     ~ 2 0
72 NGC 7789 OpC 23 57 19.4 +56 43 28   7.68 6.7     ~ 575 0
73 NAME Helmi Stream St* ~ ~           ~ 144 0
74 NAME Gaia Enceladus-Sausage St* ~ ~           ~ 860 0

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