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Table 1

Line list and oscillator strengths.

Ion λ χex log gf log gf log gf
(Å) (eV) VALD3 Kurucz APOGEE
PI 15711.522 7.176 −0.510 −0.720 −0.404
16482.932 7.213 −0.290 −0.400 −0.273
SI 15469.816 8.046 −0.050 −0.220 −0.199
15475.616 8.047 −0.520 −0.700 −0.744
15478.482 8.047 0.180 0.000 −0.040
KI 15163.067 2.670 0.524 0.640 0.630
15168.377 2.670 0.347 0.480 0.481

Notes. Air wavelengths are from APOGEE collaboration linelist. Note that somewhat different wavelengths for S I 15469.826. 15475.624 and 15478.496 Å are given in National Institute of Standards and Technology (NIST) by Kramida, A., Ralchenko, Yu., Reader, J., and the NIST ASD Team (2024). The NIST Atomic Spectra Database used is (ver. 5.12), [Online]1 [2025, April 16]. Oscillator strengths of the P, S, and K lines from VALD3, Kurucz & Bell (1995), and the APOGEE collaboration (adopted) are reported.

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