2019MNRAS.482.5275H


Query : 2019MNRAS.482.5275H

2019MNRAS.482.5275H - Mon. Not. R. Astron. Soc., 482, 5275-5289 (2019/February-1)

Chemical analysis of K giants in the young open cluster NGC 2345.

HOLANDA N., PEREIRA C.B. and DRAKE N.A.

Abstract (from CDS):

We present results for the elemental abundances of five K giants of the young open cluster NGC 2345. The atmospheric parameters of the studied giants and their chemical abundances were determined using high-resolution optical spectroscopy. In this study, we determine abundances of light elements (Li, C, N), light odd-Z elements (Na, Al), α-elements (Mg, Si, Ca, Ti), Fe-group elements (Cr, Fe, Ni), and n-capture elements (Y, Zr, La, Ce, Nd, Sm, Eu) for each star. Abundances of the light elements and Eu were obtained using spectral synthesis technique. Also, rotation velocities were determined through the spectral synthesis of the Fe I line at 6151.6 Å. The mean metallicity obtained for the open cluster is [Fe/H] = -0.33 ±0.05 and it is considered low compared to recent studies for open clusters in the Milky Way, although low for its Galactic latitude (b = -02○.31). Lastly, the abundance analysis shows that there is good agreement with the profile of field clump stars with the same metallicity.

Abstract Copyright: © 2018 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): stars: abundances - stars: fundamental parameters - open clusters and associations: individual: NGC 2345

Simbad objects: 18

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Number of rows : 18
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 Melotte 22 OpC 03 46 38.0 +24 10 41           ~ 3679 0
2 NGC 1545 OpC 04 20 53.3 +50 11 32   7.2 6.2     ~ 121 0
3 NGC 2345 14 * 07 08 17.4623355624 -13 11 30.485397912   12.79 10.73     K2II 9 0
4 NGC 2345 OpC 07 08 21.4 -13 11 44   8.58 7.7     ~ 92 0
5 BD-12 1805 V* 07 08 21.8535089832 -13 10 23.271145608   11.44 9.94     G6II+B 22 0
6 NGC 2345 43 * 07 08 26.3197214208 -13 11 14.441334900   12.51 10.70     K0Ib-II 13 0
7 2MASS J07082701-1312329 s*r 07 08 27.0114912696 -13 12 32.987110284   12.44 10.40     K4Ib 15 0
8 NGC 2345 60 * 07 08 30.3703598472 -13 13 52.554084492   12.30 10.48     K2Ib-II 12 0
9 NGC 2360 OpC 07 17 45.8 -15 38 21           ~ 213 0
10 Cl Collinder 140 OpC 07 23 23.9 -31 58 15           ~ 154 0
11 NGC 2447 OpC 07 44 34.6 -23 51 22           ~ 170 1
12 NGC 2451 Cl* 07 45.4 -37 58           ~ 165 1
13 NGC 3105 OpC 10 00 41.0 -54 47 20   10.73 9.7     ~ 47 0
14 NGC 3114 OpC 10 01 55.0 -60 02 16   4.47 4.2     ~ 213 0
15 NGC 3680 OpC 11 25 19.8 -43 14 38   8.40 7.6     ~ 340 0
16 NGC 4609 OpC 12 42 19.2 -62 59 36   7.32 6.9     ~ 96 0
17 NGC 5316 OpC 13 54 02.6 -61 53 05   6.08 6.0     ~ 109 0
18 NGC 5822 OpC 15 04 08.3 -54 21 52           ~ 238 0

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