The abundances of nearby red clump giants

被引：37

作者：

Liu, Y. J. ^{[1
]}

Zhao, G.

Shi, J. R.

Pietrzynski, G.

Gieren, W.

机构：

[1] Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China

[2] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

[3] Univ Concepcion, Dept Fis, Concepcion, Chile

[4] Univ Warsaw Observ, PL-00478 Warsaw, Poland

来源：

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY | 2007年 / 382卷 / 02期

关键词：

stars : abundances; stars : atmospheres; stars : late-type;

D O I：

10.1111/j.1365-2966.2007.11852.x

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Based on the analysis of high-resolution spectra with a high signal-to-noise ratio, we have determined the abundances of the alpha-elements O, Si, Ca and Ti, the iron peak elements V, Fe and Ni, and the heavy element Ba without the consideration of non-local thermodynamic equilibrium (NLTE) effect and the light neutron-rich elements Na, Mg and Al with an NLTE analysis for 63 nearby red clump giants. Fe abundances cover a logarithmic range between -0.60 and +0.35 relative to solar. All abundance ratios with respect to Fe are similar to those found in the Sun. Hyperfine structure (HFS) was taken into account when calculating V lines. The difference in abundances obtained with and without HFS can be as large as 0.5 dex.

引用

页码：553 / 566

页数：14

共 68 条

[1] The effective temperature scale of giant stars (F0-K5) -: II.: Empirical calibration of Teff versus colours and [Fe/H]
Alonso, A
Arribas, S
Martínez-Roger, C
[J]. ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES, 1999, 140 (03): : 261 - 277
[2] The effective temperature scale of giant stars (F0-K5) -: II.: Empirical calibration of Teff versus colours and [Fe/H] (vol 140, pg 261, 1999)
Alonso, A
Arribas, S
Martínez-Roger, C
[J]. ASTRONOMY & ASTROPHYSICS, 2001, 376 (03): : 1039 - 1039
[3] Sodium enrichment of stellar atmospheres - I. Non-variable supergiants and bright giants
Andrievsky, SM
Egorova, IA
Korotin, SA
Burnage, R
[J]. ASTRONOMY & ASTROPHYSICS, 2002, 389 (02) : 519 - 523
[4] [Anonymous], 1993, ATLAS9 STELLAR ATMOS
[5] BARD A, 1991, ASTRON ASTROPHYS, V248, P315
[6] BARD A, 1994, ASTRON ASTROPHYS, V282, P1014
[7] Oxygen trends in the Galactic thin and thick disks
Bensby, T
Feltzing, S
Lundström, I
[J]. ASTRONOMY & ASTROPHYSICS, 2004, 415 (01) : 155 - 170
[8] PRECISION-MEASUREMENT OF RELATIVE OSCILLATOR-STRENGTHS FOR TI-I .2. TRANSITIONS FROM LEVELS A5F1-4 (0.81-0.84 EV), A1D2 (0.90 EV) AND A3P0-2 (1.05-1.07 EV)
BLACKWELL, DE
MENON, SLR
PETFORD, AD
SHALLIS, MJ
[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1982, 201 (02) : 611 - 617
[9] PRECISION-MEASUREMENT OF RELATIVE OSCILLATOR-STRENGTHS .9. MEASURES OF FE-I TRANSITIONS FROM LEVELS A5P1-3(2.18-2.28EV), A3P2(2.28EV), A3P0,1(2.49-2.42EV), Z7(D0(1-5)(2.48-2.40EV) AND A3H4-6(2.45-2.40EV)
BLACKWELL, DE
PETFORD, AD
SHALLIS, MJ
SIMMONS, GJ
[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 1982, 199 (01) : 43 - 51
[10] BOOTHROYD AI, 1999, APJ, V565, P587

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