2008A&A...488..943S


C.D.S. - SIMBAD4 rel 1.7 - 2020.05.29CEST04:12:26

2008A&A...488..943S - Astronomy and Astrophysics, volume 488, 943-958 (2008/9-4)

Open clusters as key tracers of Galactic chemical evolution. III. Element abundances in Berkeley 20, Berkeley 29, Collinder 261, and Melotte 66.

SESTITO P., BRAGAGLIA A., RANDICH S., PALLAVICINI R., ANDRIEVSKY S.M. and KOROTIN S.A.

Abstract (from CDS):

Galactic open clusters are since long recognized as one of the best tools for investigating the radial distribution of iron and other metals. We employed FLAMES at VLT to collect UVES spectra of bright giant stars in a large sample of open clusters, spanning a wide range of Galactocentric distances, ages, and metallicities. We present here the results for four clusters: Berkeley 20 and Berkeley 29, the two most distant clusters in the sample; Collinder 261, the oldest and the one with the minimum Galactocentric distance; Melotte 66. Equivalent width analysis was carried out using the spectral code MOOG and Kurucz model atmospheres to derive abundances of Fe, Al, Mg, Si, Ca, Ti, Cr, Ni, Ba; non-LTE Na abundances were derived by direct line-profile fitting. We obtain subsolar metallicities for the two anticenter clusters Be 20 ([Fe/H]=-0.30, rms=0.02) and Be 29 ([Fe/H]=-0.31, rms=0.03), and for Mel 66 ([Fe/H]=-0.33, rms=0.03), located in the third Galactic quadrant, while Cr 261, located toward the Galactic center, has higher metallicity ([Fe/H]=+0.13, rms=0.05dex). The α-elements Si, Ca and Ti, and the Fe-peak elements Cr and Ni are in general close to solar; the s-process element Ba is enhanced. Non-LTE computations of Na abundances indicate solar scaled values, suggesting that the enhancement in Na previously determined in giants in open clusters could be due to neglected non-LTE effects. Our results support the presence of a steep negative slope of the Fe radial gradient up to about 10-11 kpc from the Galactic center, while in the outer disk the [Fe/H] distribution seems flat. All the elemental ratios measured are in very good agreement with those found for disk stars of similar metallicity and no trend with Galactocentric distance seems to be present.

Abstract Copyright:

Journal keyword(s): stars: abundances - stars: evolution - Galaxy: disk - Galaxy: open clusters and associations: general - Galaxy: open clusters and associations: individual: Berkeley 20, Berkeley 29, Collinder 261, Melotte 66

VizieR on-line data: <Available at CDS (J/A+A/488/943): stars.dat ew.dat>

Nomenclature: Table 3: Cl* Berkeley 20 SBR NNNN N=6 among (Nos 1201-1716), Cl* Berkeley 29 BHT NNNN (Nos 398, 602) added, Cl* Melotte 66 SBR NNNN N=7 among (Nos 1346-2218), Cl* Collinder 261 SBR NNNN N=7 among (Nos 2-11).

Status at CDS:  

Simbad objects: 67

goto Full paper

goto View the reference in ADS

Number of rows : 67

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 Cl Blanco 1 OpC 00 04 07 -29 50.0           ~ 233 0
2 NGC 188 OpC 00 48 26 +85 15.3           ~ 809 0
3 NGC 1039 OpC 02 42 05 +42 45.7           ~ 370 0
4 Cl Berkeley 66 OpC 03 04 04 +58 44.4           ~ 52 0
5 Cl Melotte 22 OpC 03 47 00 +24 07.0           ~ 2966 0
6 Cl* Berkeley 20 SBR 1403 * 05 32 05.6000170760 +00 12 43.930314625     15.88   14.53 ~ 2 0
7 Cl* Berkeley 20 SBR 1201 * 05 32 36.7627679845 +00 11 04.839727116     16.177     ~ 8 0
8 Cl Berkeley 20 OpC 05 32 37.0 +00 11 18           ~ 99 0
9 Cl* Berkeley 20 SBR 1240 * 05 32 38.9518220913 +00 11 20.367886591     15.154     ~ 12 0
10 Cl* Berkeley 20 SBR 1666 * 05 32 46.4055987149 +00 15 52.225459621     15.919   14.673 ~ 2 0
11 Cl* Berkeley 20 SBR 1519 * 05 32 54.9519091131 +00 14 07.351889769     16.32   15.09 ~ 2 0
12 NAME Gal Anticenter reg 05 46 +28.9           ~ 718 0
13 Cl Berkeley 22 OpC 05 58.4 +07 50           ~ 63 0
14 NGC 2141 OpC 06 02 55 +10 26.8   10.43 9.4     ~ 115 0
15 Cl Berkeley 73 OpC 06 22 06 -06 19.0           ~ 33 0
16 NGC 2243 OpC 06 29 34 -31 17.0   10.12 9.4     ~ 210 0
17 Cl Berkeley 25 OpC 06 41 16 -16 29.2           ~ 44 0
18 C 0646-104 OpC 06 48 58 -10 30.6           ~ 29 0
19 Cl Berkeley 75 OpC 06 49 01.0 -23 59 48           ~ 40 0
20 Cl* Berkeley 29 BHT 602 * 06 52 55.4751675400 +16 57 39.621171776           ~ 7 0
21 Cl* Berkeley 29 K 412 * 06 53 01.5859901123 +16 56 21.422393181   17.622 16.639     ~ 10 0
22 Cl Berkeley 29 OpC 06 53 04.2 +16 55 39   14.3       ~ 138 0
23 UCAC4 535-035484 V* 06 53 04.315 +16 55 39.57   17.581 16.609 16.22   ~ 10 0
24 Cl* Berkeley 29 BHT 933 * 06 53 04.4695068084 +16 57 45.006682558   17.435 16.447     ~ 7 0
25 Cl* Berkeley 29 BHT 1024 * 06 53 07.1154093548 +16 57 12.963899867   16.091 14.616     ~ 10 0
26 Cl* Berkeley 29 K 801 * 06 53 08.0626882631 +16 55 40.579626702   17.542 16.579     G6III 12 0
27 Cl Berkeley 31 OpC 06 57 36 +08 16.0           ~ 94 0
28 Cl Berkeley 33 OpC 06 57 42 -13 13.0           ~ 61 0
29 Cl Berkeley 32 OpC 06 58 06 +06 26.0           ~ 106 0
30 NGC 2324 OpC 07 04 07 +01 02.7   8.83 8.4     ~ 124 0
31 NGC 2360 OpC 07 17 43 -15 38.5           ~ 167 0
32 NAME Saurer A Cluster OpC 07 20.9 +01 48           ~ 53 0
33 Cl* Melotte 66 SBR 1865 RB? 07 25 57.9396687615 -47 40 23.249039404     14.5     ~ 8 0
34 Cl Melotte 66 4118 RB? 07 26 02.5076956557 -47 40 55.930771120     14.6     ~ 11 0
35 Cl Melotte 66 4266 * 07 26 17.2970995921 -47 44 00.058840039     14.55     ~ 12 0
36 Cl Melotte 66 2107 * 07 26 19.8974231893 -47 40 15.854313884   15.627 14.462 14.413 13.52 ~ 14 0
37 Cl Melotte 66 OpC 07 26 23 -47 40.0   8.73 7.8     ~ 170 0
38 V* V659 Pup Ro* 07 26 23.7000359187 -47 42 01.956572047   15.93 14.7   13.3 ~ 6 0
39 Cl* Melotte 66 KJF 1419 RB? 07 26 26.6608887692 -47 37 55.807262138   15.470 14.48   13.29 ~ 13 0
40 Cl Melotte 66 3235 * 07 26 34.5891266149 -47 42 47.163622813   15.780 14.626 14.428 13.39 ~ 14 0
41 Cl Melotte 71 OpC 07 37 34 -12 03.3   7.44 7.1     ~ 94 0
42 NGC 2447 OpC 07 44 30 -23 51.4           ~ 116 1
43 NGC 2477 OpC 07 52 10 -38 31.8   6.64 5.8     ~ 256 0
44 NGC 2506 OpC 08 00 01 -10 46.2   8.28 7.6     ~ 220 0
45 IC 2391 OpC 08 40 32 -53 02.0           ~ 713 0
46 NGC 2660 OpC 08 42 38 -47 12.0   9.05 8.8     ~ 126 0
47 NGC 2682 OpC 08 51 18 +11 48.0           ~ 2023 0
48 IC 2602 OpC 10 42 58 -64 24.0           ~ 548 0
49 NGC 3960 OpC 11 50 33 -55 40.4   9.07 8.3     ~ 115 0
50 Cl* Collinder 261 PJM 2105 * 12 37 34.6667283833 -68 23 25.398023797   14.384 12.937   11.345 ~ 12 0
51 Cl* Collinder 261 PJM 1526 * 12 37 53.95 -68 21 48.8   15.657 14.27   12.85 ~ 9 0
52 Cl* Collinder 261 PJM 1481 * 12 37 55.2242750731 -68 22 36.043992673   15.429 13.95   12.44 ~ 10 0
53 Cl* Collinder 261 SBR 11 * 12 37 59.7124447324 -68 23 49.781954740   15.438 14.145   12.654 ~ 7 0
54 Cl* Collinder 261 PJM 1080 * 12 38 07.2702740490 -68 22 31.009721591   15.387 13.952   12.472 ~ 14 0
55 Cl Collinder 261 OpC 12 38 11.5 -68 22 01     10.7     ~ 155 0
56 Cl* Collinder 261 PJM 906 * 12 38 12.3753086419 -68 20 31.633552817   15.526 14.164   12.72 ~ 11 0
57 Cl* Collinder 261 SBR 5 * 12 38 12.68 -68 21 50.6   15.139 14.139   12.635 ~ 7 0
58 NGC 6134 OpC 16 27 46 -49 09.1   7.89 7.2     ~ 130 0
59 NGC 6253 OpC 16 59 05 -52 42.0     10.2     ~ 144 0
60 IC 4651 OpC 17 24 49 -49 56.0           ~ 309 0
61 NAME Gal Center reg 17 45 40.04 -29 00 28.1           ~ 11446 0
62 NGC 6475 OpC 17 53 51 -34 47.6           ~ 337 0
63 NGC 6705 OpC 18 51 05 -06 16.2   6.32 5.8     ~ 353 0
64 NGC 6791 OpC 19 20 53 +37 46.3   10.52 9.5     ~ 865 0
65 NGC 6819 OpC 19 41 18 +40 11.2   8.21 7.3     ~ 462 0
66 NGC 7789 OpC 23 57 24 +56 42.5   7.68 6.7     ~ 454 0
67 NAME Monoceros Stream St* ~ ~           ~ 311 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2008A&A...488..943S and select 'bookmark this link' or equivalent in the popup menu


2020.05.29-04:12:26

© Université de Strasbourg/CNRS

    • Contact