2007A&A...465..185S


Query : 2007A&A...465..185S

2007A&A...465..185S - Astronomy and Astrophysics, volume 465, 185-196 (2007/4-1)

Element abundances in the metal-rich open cluster NGC 6253.

SESTITO P., RANDICH S. and BRAGAGLIA A.

Abstract (from CDS):

We have carried out a big FLAMES survey of 10 Galactic open clusters aiming at different goals. One of them is the determination of chemical abundances, to put constraints on the radial metallicity gradient in the disk and its evolution. One of the sample clusters is the very metal-rich NGC 6253. We have obtained UVES high resolution spectra of seven candidate cluster members (from the turn off up to the red clump) with the goal of determining the chemical composition of NGC 6253 and of investigating its origin and role in the interpretation of the radial metallicity gradient in the disk. Equivalent width analysis and spectral synthesis were performed using MOOG and Kurucz model atmospheres. We derived abundances of Fe, α-, and Fe-peak elements, the light element Na, and the s-process element Ba. Excluding two likely non-members and the clump giant, whose metallicity from equivalent widths is overestimated, we find an average [Fe/H]=+0.36±0.07 (rms) for the cluster. For most of the other elements we derive solar abundance ratios.

Abstract Copyright:

Journal keyword(s): stars: abundances - Galaxy: evolution - Galaxy: disk - open clusters and associations: individual: NGC 6253 - abundances - Galaxy: open clusters and associations: general

VizieR on-line data: <Available at CDS (J/A+A/465/185): table2.dat table3.dat>

Nomenclature: Table 2, col(1): Cl* NGC 6253 EIS NNNNNN N=7 = Table 2, col(2): Cl* NGC 6253 BTT NNNN N=6 added.

Simbad objects: 20

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Number of rows : 20
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 Cl Melotte 25 OpC 04 29 47 +16 56.9           ~ 2844 0
2 NGC 2632 OpC 08 40 13 +19 37.3           ~ 1385 0
3 * mu. Leo PM* 09 52 45.8165435 +26 00 25.031882 6.50 5.10 3.88 2.97 2.39 K2IIIbCN1Ca1 424 0
4 Cl Collinder 261 OpC 12 38 05 -68 22.6     10.7     ~ 171 0
5 NGC 5822 OpC 15 04 12 -54 22.0           ~ 184 0
6 NGC 6134 OpC 16 27 49 -49 09.7   7.89 7.2     ~ 137 0
7 Cl* NGC 6253 TAD 52 RB? 16 58 51.1920370752 -52 36 57.717307800   13.989 12.700 12.017 11.300 ~ 8 0
8 Cl* NGC 6253 EIS 69885 * 16 58 52.3124231448 -52 41 40.990276428   15.127 14.341 13.931 13.430 ~ 9 0
9 Cl* NGC 6253 EIS 23501 * 16 58 53.2523864664 -52 42 43.534699020   15.094 14.275 13.842 13.322 ~ 10 0
10 NGC 6253 OpC 16 59 07 -52 42.7     10.2     ~ 165 0
11 [TGB2011] J165907.0216-524222.696 RG* 16 59 07.0414870464 -52 42 22.165909380   14.444 13.175 12.468 11.772 ~ 7 0
12 [TGB2011] J165912.9183-524136.015 RG* 16 59 12.9241216176 -52 41 35.903146848   14.645 13.501 12.852 12.193 ~ 14 0
13 Cl* NGC 6253 EIS 22182 * 16 59 15.5184709464 -52 43 33.272817096   15.039 13.840 13.156 12.452 ~ 3 0
14 Cl* NGC 6253 EIS 23498 * 16 59 21.3563214672 -52 42 43.384379940   14.767 13.912 13.454 12.934 ~ 8 0
15 IC 4651 OpC 17 24 51 -49 55.0           ~ 329 0
16 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 12914 0
17 NGC 6475 OpC 17 53 47 -34 50.5           ~ 355 0
18 IC 4725 OpC 18 31 45 -19 06.8           ~ 204 0
19 NGC 6705 OpC 18 51 04 -06 16.3   6.32 5.8     ~ 382 0
20 NGC 6791 OpC 19 20 53 +37 46.7   10.52 9.5     ~ 956 0

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2022.05.28-21:45:41

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