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Chemical analysis of K giants in the young open cluster NGC2345. / Holanda, N.; Pereira, C.B.; Drake, N.A.
In: Monthly Notices of the Royal Astronomical Society, Vol. 482, No. 4, 01.02.2019, p. 5275-5289.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Chemical analysis of K giants in the young open cluster NGC2345
AU - Holanda, N.
AU - Pereira, C.B.
AU - Drake, N.A.
N1 - Publisher Copyright: © 2018 The Author(s).
PY - 2019/2/1
Y1 - 2019/2/1
N2 - 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.
AB - 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.
KW - звезды
KW - химическое содержание звезд
KW - фундаментальные параметры звезд
KW - рассеянные скопления и ассоциации
KW - NGC 2345
KW - Associations: individual: NGC 2345
KW - Open clusters
KW - Stars: abundances
KW - Stars: fundamental parameters
KW - CARBON
KW - open clusters and associations: individual: NGC 2345
KW - RED GIANTS
KW - COMPREHENSIVE ABUNDANCE ANALYSIS
KW - PARAMETERS
KW - CN
KW - stars: abundances
KW - SPECTROSCOPY
KW - BAND SYSTEMS
KW - stars: fundamental parameters
KW - STARS
KW - RADIAL-VELOCITIES
UR - http://adsabs.harvard.edu/abs/2019MNRAS.482.5275H
UR - https://academic.oup.com/mnras/article-abstract/482/4/5275/5159499?redirectedFrom=PDF
UR - http://www.scopus.com/inward/record.url?scp=85061104806&partnerID=8YFLogxK
UR - http://www.mendeley.com/research/chemical-analysis-k-giants-young-open-cluster-ngc-2345
U2 - 10.1093/mnras/sty2991
DO - 10.1093/mnras/sty2991
M3 - Article
VL - 482
SP - 5275
EP - 5289
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
SN - 0035-8711
IS - 4
ER -
ID: 38673381