ON THE METALLICITIES OF KEPLER STARS
ON THE METALLICITIES OF KEPLER STARS
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关于开普勒星的金属性
DOI:
10.1088/2041-8205/789/1/l3
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发表时间:
2013-11
影响因子:
7.9
通讯作者:
Zhang, Yong
中科院分区:
文献类型:
--
作者:
Yang, X. H.;Zhang, Haotong;Jin, Ge;Zhang, Yong
We use 12,000 stars from the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) spectroscopic survey data to show that the metallicities of Kepler field stars as given in the Kepler Input Catalog (KIC) systematically underestimate both the true metallicity and the dynamic range of the Kepler sample. Specifically, to the first order approximation, we find [Fe/H]KIC = −0.20 + 0.43[Fe/H]LAMOST, with a scatter of ∼0.25 dex, due almost entirely to errors in KIC. This relation is most secure for −0.3 < [Fe/H]LAMOST < +0.4 where we have >200 comparison stars per 0.1 dex bin and good consistency is shown between metallicities determined by LAMOST and high-resolution spectra. It remains approximately valid in a slightly broader range. When the relation is inverted, the error in true metallicity as derived from KIC is (0.25 dex)/0.43–0.6 dex. We thereby quantitatively confirm the cautionary note by Brown et al. that KIC estimates of [Fe/H] should not be used by “anyone with a particular interest in stellar metallicities”. Fortunately, many more LAMOST spectroscopic metallicities will be available in the near future.
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DOI:
10.1088/0004-637x/738/2/177
发表时间:
2011-06
期刊:
The Astrophysical Journal
影响因子:
--
作者:
K. Schlaufman;G. Laughlin
通讯作者:
K. Schlaufman;G. Laughlin
影响因子:
4.9
作者:
Everett, Mark E.;Howell, Steve B.;Szkody, Paula
通讯作者:
Szkody, Paula
DOI:
10.1088/0004-637x/757/2/161
发表时间:
2012-08
期刊:
The Astrophysical Journal
影响因子:
--
作者:
G. Torres;D. Fischer;A. Sozzetti;L. Buchhave;J. Winn;M. Holman;J. Carter
通讯作者:
G. Torres;D. Fischer;A. Sozzetti;L. Buchhave;J. Winn;M. Holman;J. Carter
DOI:
10.1051/aas:1996222
发表时间:
1996-09
期刊:
Astronomy & Astrophysics Supplement Series
影响因子:
--
作者:
J. Valenti;N. Piskunov
通讯作者:
J. Valenti;N. Piskunov
影响因子:
1.1
作者:
H. Röttgering;J. Afonso;P. Barthel;F. Batejat;P. Best;A. Bonafede;M. Brüggen;G. Brunetti;
通讯作者:
H. Röttgering;J. Afonso;P. Barthel;F. Batejat;P. Best;A. Bonafede;M. Brüggen;G. Brunetti;