Systematic non-LTE study of the $-2.6 \le$ [Fe/H] $\le 0.2$ F and G dwarfs in the solar neighbourhood. II. Abundance patterns from Li to Eu

G. Zhao; L. Mashonkina; H. L. Yan; S. Alexeeva; C. Kobayashi; Yu Pakhomov; J. R. Shi; T. Sitnova; K. F. Tan; H. W. Zhang; J. B. Zhang; Z. M. Zhou; M. Bolte; Y. Q. Chen; X. Li; F. Liu; M. Zhai

doi:10.3847/1538-4357/833/2/225

Systematic non-LTE study of the $-2.6 \le$ [Fe/H] $\le 0.2$ F and G dwarfs in the solar neighbourhood. II. Abundance patterns from Li to Eu

G. Zhao, L. Mashonkina, H. L. Yan, S. Alexeeva, C. Kobayashi, Yu Pakhomov, J. R. Shi, T. Sitnova, K. F. Tan, H. W. Zhang, J. B. Zhang, Z. M. Zhou, M. Bolte, Y. Q. Chen, X. Li, F. Liu, M. Zhai

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Abstract

For the first time, we present an extensive study of stars with individual non-local thermodynamic equilibrium (NLTE) abundances for 17 chemical elements from Li to Eu in a sample of stars uniformly distributed over the $-2.62 \le$ [Fe/H] $\le +0.24$ metallicity range that is suitable for the Galactic chemical evolution research. The star sample has been kinematically selected to trace the Galactic thin and thick disks and halo. We find new and improve earlier results as follows. (i) The element-to-iron ratios for Mg, Si, Ca, and Ti form a MP plateau at a similar height of 0.3~dex, and the knee occurs at common [Fe/H] $\simeq -0.8$. The knee at the same metallicity is observed for [O/Fe], and the MP plateau is formed at [O/Fe] = 0.61. (ii) The upward trend of [C/O] with decreasing metallicity exists at [Fe/H] $$

Original language	English
Number of pages	26
Journal	The Astrophysical Journal
Volume	833
Issue number	2
DOIs	https://doi.org/10.3847/1538-4357/833/2/225
Publication status	Published - 19 Dec 2016

Keywords

galaxy: evolution
line: formatin
stars: abundances
stars: atmospheres
stars: late-type

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10.3847/1538-4357/833/2/225

Zhao_2016_ApJ_833_225Final published version, 1.65 MB

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Zhao, G., Mashonkina, L., Yan, H. L., Alexeeva, S., Kobayashi, C., Pakhomov, Y., Shi, J. R., Sitnova, T., Tan, K. F., Zhang, H. W., Zhang, J. B., Zhou, Z. M., Bolte, M., Chen, Y. Q., Li, X., Liu, F., & Zhai, M. (2016). Systematic non-LTE study of the $-2.6 \le$ [Fe/H] $\le 0.2$ F and G dwarfs in the solar neighbourhood. II. Abundance patterns from Li to Eu. The Astrophysical Journal, 833(2). https://doi.org/10.3847/1538-4357/833/2/225

@article{e60784913b324319af2c5c054870de96,

title = "Systematic non-LTE study of the $-2.6 \le$ [Fe/H] $\le 0.2$ F and G dwarfs in the solar neighbourhood. II. Abundance patterns from Li to Eu",

abstract = "For the first time, we present an extensive study of stars with individual non-local thermodynamic equilibrium (NLTE) abundances for 17 chemical elements from Li to Eu in a sample of stars uniformly distributed over the $-2.62 \le$ [Fe/H] $\le +0.24$ metallicity range that is suitable for the Galactic chemical evolution research. The star sample has been kinematically selected to trace the Galactic thin and thick disks and halo. We find new and improve earlier results as follows. (i) The element-to-iron ratios for Mg, Si, Ca, and Ti form a MP plateau at a similar height of 0.3~dex, and the knee occurs at common [Fe/H] $\simeq -0.8$. The knee at the same metallicity is observed for [O/Fe], and the MP plateau is formed at [O/Fe] = 0.61. (ii) The upward trend of [C/O] with decreasing metallicity exists at [Fe/H] $$",

keywords = "galaxy: evolution, line: formatin, stars: abundances, stars: atmospheres, stars: late-type",

author = "G. Zhao and L. Mashonkina and Yan, {H. L.} and S. Alexeeva and C. Kobayashi and Yu Pakhomov and Shi, {J. R.} and T. Sitnova and Tan, {K. F.} and Zhang, {H. W.} and Zhang, {J. B.} and Zhou, {Z. M.} and M. Bolte and Chen, {Y. Q.} and X. Li and F. Liu and M. Zhai",

note = "G. Zhao, et al, 'SYSTEMATIC NON-LTE STUDY OF THE −2.6 „ [Fe/H] „ 0.2 F AND G DWARFS IN THE SOLAR NEIGHBORHOOD. II. ABUNDANCE PATTERNS FROM Li TO Eu*', The Astrophysical Journal, Vol. 833 (2), December 2016, doi:10.3847/1538-4357/833/2/225. {\textcopyright} 2016. The American Astronomical Society. All rights reserved.",

year = "2016",

month = dec,

day = "19",

doi = "10.3847/1538-4357/833/2/225",

language = "English",

volume = "833",

journal = "The Astrophysical Journal",

issn = "0004-637X",

publisher = "IOP Publishing Ltd.",

number = "2",

}

Zhao, G, Mashonkina, L, Yan, HL, Alexeeva, S, Kobayashi, C, Pakhomov, Y, Shi, JR, Sitnova, T, Tan, KF, Zhang, HW, Zhang, JB, Zhou, ZM, Bolte, M, Chen, YQ, Li, X, Liu, F & Zhai, M 2016, 'Systematic non-LTE study of the $-2.6 \le$ [Fe/H] $\le 0.2$ F and G dwarfs in the solar neighbourhood. II. Abundance patterns from Li to Eu', The Astrophysical Journal, vol. 833, no. 2. https://doi.org/10.3847/1538-4357/833/2/225

TY - JOUR

T1 - Systematic non-LTE study of the $-2.6 \le$ [Fe/H] $\le 0.2$ F and G dwarfs in the solar neighbourhood. II. Abundance patterns from Li to Eu

AU - Zhao, G.

AU - Mashonkina, L.

AU - Yan, H. L.

AU - Alexeeva, S.

AU - Kobayashi, C.

AU - Pakhomov, Yu

AU - Shi, J. R.

AU - Sitnova, T.

AU - Tan, K. F.

AU - Zhang, H. W.

AU - Zhang, J. B.

AU - Zhou, Z. M.

AU - Bolte, M.

AU - Chen, Y. Q.

AU - Li, X.

AU - Liu, F.

AU - Zhai, M.

N1 - G. Zhao, et al, 'SYSTEMATIC NON-LTE STUDY OF THE −2.6 „ [Fe/H] „ 0.2 F AND G DWARFS IN THE SOLAR NEIGHBORHOOD. II. ABUNDANCE PATTERNS FROM Li TO Eu*', The Astrophysical Journal, Vol. 833 (2), December 2016, doi:10.3847/1538-4357/833/2/225. © 2016. The American Astronomical Society. All rights reserved.

PY - 2016/12/19

Y1 - 2016/12/19

N2 - For the first time, we present an extensive study of stars with individual non-local thermodynamic equilibrium (NLTE) abundances for 17 chemical elements from Li to Eu in a sample of stars uniformly distributed over the $-2.62 \le$ [Fe/H] $\le +0.24$ metallicity range that is suitable for the Galactic chemical evolution research. The star sample has been kinematically selected to trace the Galactic thin and thick disks and halo. We find new and improve earlier results as follows. (i) The element-to-iron ratios for Mg, Si, Ca, and Ti form a MP plateau at a similar height of 0.3~dex, and the knee occurs at common [Fe/H] $\simeq -0.8$. The knee at the same metallicity is observed for [O/Fe], and the MP plateau is formed at [O/Fe] = 0.61. (ii) The upward trend of [C/O] with decreasing metallicity exists at [Fe/H] $$

AB - For the first time, we present an extensive study of stars with individual non-local thermodynamic equilibrium (NLTE) abundances for 17 chemical elements from Li to Eu in a sample of stars uniformly distributed over the $-2.62 \le$ [Fe/H] $\le +0.24$ metallicity range that is suitable for the Galactic chemical evolution research. The star sample has been kinematically selected to trace the Galactic thin and thick disks and halo. We find new and improve earlier results as follows. (i) The element-to-iron ratios for Mg, Si, Ca, and Ti form a MP plateau at a similar height of 0.3~dex, and the knee occurs at common [Fe/H] $\simeq -0.8$. The knee at the same metallicity is observed for [O/Fe], and the MP plateau is formed at [O/Fe] = 0.61. (ii) The upward trend of [C/O] with decreasing metallicity exists at [Fe/H] $$

KW - galaxy: evolution

KW - line: formatin

KW - stars: abundances

KW - stars: atmospheres

KW - stars: late-type

UR - https://arxiv.org/abs/1610.00193

U2 - 10.3847/1538-4357/833/2/225

DO - 10.3847/1538-4357/833/2/225

M3 - Article

SN - 0004-637X

VL - 833

JO - The Astrophysical Journal

JF - The Astrophysical Journal

IS - 2

ER -

Systematic non-LTE study of the $-2.6 \le$ [Fe/H] $\le 0.2$ F and G dwarfs in the solar neighbourhood. II. Abundance patterns from Li to Eu

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