A Near-Infrared Stellar Spectral Library: II. K-Band Spectra

TL;DR

This paper presents a comprehensive near-infrared K-band spectral library of 114 stars spanning various spectral types and luminosity classes, obtained with moderate resolution using the GIRT telescope, complementing previous H-band data.

Contribution

It introduces a new, publicly available K-band stellar spectral library with 114 stars, expanding the spectral coverage and resolution of existing near-infrared stellar libraries.

Findings

Spectral library covers O7--M7 spectral types.

Spectra have a resolution of ~22 Angstroms.

Library is available online for community use.

Abstract

This paper is the second in the series of papers on near-infrared (NIR) stellar spectral library produced by reducing the observations carried out with 1.2 meter Gurushikhar Infrared Telescope (GIRT), at Mt. Abu, India using a NICMOS3 HgCdTe 256 X 256 NIR array based spectrometer. In paper I (Ranade et al. 2004), H-band spectra of 135 stars at a resolution of ~16 Ang were presented. The K-band library being released now consists of 114 stars covering spectral types O7--M7 and luminosity classes I--V. The spectra have a moderate resolution of ~22 Ang in the K band and have been continuum shape corrected to their respective effective temperatures. We hope to release the remaining J-band spectra soon. The complete H and K-Band library is available online at: http://vo.iucaa.ernet.in/~voi/NIR_Header.html