Revisiting The Li Abundances Of Stars With And Without Detected Planets From The High Resolution Spectroscopy
Whether the presence of planets affects the lithium (Li) abundance of their host stars is still an open question.
To investigate the difference of the Li abundance between planet-host stars (HS) and isolated stars (IS) with no detected planets, we analyze a large sample of stars with temperatures ranging from 4600 to 6600 K and metallicity ranging from -0.55 to +0.50. The sample consists of 279 HS whose spectra were taken from the California-Kepler Survey (CKS), which followed up planets detected by Kepler, and 171 IS whose spectra were taken from the Keck archive.
The non-local thermodynamic equilibrium (non-LTE) effects were taken into consideration. It is found that the distribution of Li abundances in both the HS and IS groups are generally consistent with each other. This suggests that the presence of Kepler-like planets does not have a significant impact on Li depletion. We also found that the non-LTE corrections can not be neglected for stars with A(Li) over ~ 2.5 dex.
Jinxiao Qin, Hong-Liang Yan, Wenyuan Cui, Jian-Rong Shi, Subo Dong, Shuai Liu, Zeming Zhou, Miao Tian, Zhenyan Huo, Xiangsong Fang, Jinghua Zhang, Chunqian Li, Mingyi Ding, Song Wang, Henggeng Han
Comments: 13 pages, 9 figures
Subjects: Solar and Stellar Astrophysics (astro-ph.SR); Earth and Planetary Astrophysics (astro-ph.EP)
Cite as: arXiv:2505.21957 [astro-ph.SR] (or arXiv:2505.21957v1 [astro-ph.SR] for this version)
https://doi.org/10.48550/arXiv.2505.21957
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Submission history
From: Jinxiao Qin
[v1] Wed, 28 May 2025 04:13:51 UTC (269 KB)
https://arxiv.org/abs/2505.21957
Astrobiology, Astrochemistry,
