Ren Juanjuan1; Liu Xiaowei1; Xiang Maosheng1; Huang Yang1; Hekker Saskia2; Wang Chun1; Yuan Haibo1; RebassaMansergas Alberto1; Chen Bingqiu1; Sun Ningchen1; Zhang Huawei1; Huo Zhiying3; Zhang Wei3; Zhang Yong4; Hou Yonghui4; Wang Yuefei4
Source Publicationresearchinastronomyandastrophysics
AbstractAsteroseismology allows for deriving precise values of the surface gravity of stars. The accurate asteroseismic determinations now available for the large number of stars in the Kepler fields can be used to check and calibrate surface gravities that are currently being obtained spectroscopically for a huge number of stars targeted by large-scale spectroscopic surveys, such as the on-going Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) Galactic survey. The LAMOST spectral surveys have obtained a large number of stellar spectra in the Kepler fields. Stellar atmospheric parameters of those stars have been determined with the LAMOST Stellar Parameter Pipeline at Peking University (LSP3), by template matching with the MILES empirical spectral library. In the current work, we compare surface gravities yielded by LSP3 with those of two asteroseismic samples ——the largest Kepler asteroseismic sample and the most accurate Kepler asteroseismic sample. We find that LSP3 surface gravities are in good agreement with asteroseismic values of Hekker et al., with a dispersion of ~0.2 dex. Except for a few cases, asteroseismic surface gravities of Huber et al. and LSP3 spectroscopic values agree for a wide range of surface gravities. However, some patterns in the differences can be identified upon close inspection. Potential ways to further improve the LSP3 spectroscopic estimation of stellar atmospheric parameters in the near future are briefly discussed. The effects of effective temperature and metallicity on asteroseismic determinations of surface gravities for giant stars are also discussed.
Document Type期刊论文
2.Max-Planck-Institut fur Sonnensystemforschung
Recommended Citation
GB/T 7714
Ren Juanjuan,Liu Xiaowei,Xiang Maosheng,et al. onthelsp3estimatesofsurfacegravityforlamostkeplerstarswithasteroseismicmeasurements[J]. researchinastronomyandastrophysics,2016,16(3):45.
APA Ren Juanjuan.,Liu Xiaowei.,Xiang Maosheng.,Huang Yang.,Hekker Saskia.,...&Wang Yuefei.(2016).onthelsp3estimatesofsurfacegravityforlamostkeplerstarswithasteroseismicmeasurements.researchinastronomyandastrophysics,16(3),45.
MLA Ren Juanjuan,et al."onthelsp3estimatesofsurfacegravityforlamostkeplerstarswithasteroseismicmeasurements".researchinastronomyandastrophysics 16.3(2016):45.
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