IGRINS Spectral Library
Sunkyung Park, Jeong-Eun Lee, Wonseok Kang, Sang-Gak Lee, Moo-Young, Chun, Kang-Min Kim, In-Soo Yuk, Jae-Joon Lee, Gregory N. Mace, Hwihyun Kim,, Kyle F. Kaplan, Chan Park, Jae Sok Oh, Sungho Lee, and Daniel T. Jaffe

TL;DR
This paper introduces a high-resolution near-infrared spectral library of 84 stars, providing spectral lines, indices, and empirical relations to determine stellar parameters without models.
Contribution
The first high-resolution, high S/N near-infrared spectral library with empirical relations for stellar parameters across various spectral types.
Findings
Spectral lines sensitive to temperature and gravity identified.
Empirical relations between line indices and stellar parameters established.
Library includes flux-calibrated, telluric-corrected spectra of 84 stars.
Abstract
We present a library of high-resolution (R / 45,000) and high signal-to-noise ratio (S/N 200) near-infrared spectra for stars of a wide range of spectral types and luminosity classes. The spectra were obtained with the Immersion GRating INfrared Spectrograph (IGRINS) covering the full range of the H (1.496-1.780 m) and K (2.080-2.460 m) atmospheric windows. The targets were primarily selected for being MK standard stars covering a wide range of effective temperatures and surface gravities with metallicities close to the Solar value. Currently, the library includes flux-calibrated and telluric-absorption-corrected spectra of 84 stars, with prospects for expansion to provide denser coverage of the parametric space. Throughout the H and K atmospheric windows, we identified spectral lines that are sensitive to or…
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