A high-resolution K-band spectral atlas of massive stars

TL;DR

This paper presents a high-resolution, high signal-to-noise K-band spectral atlas of 81 massive stars, covering a wide range of spectral and luminosity subclasses, with publicly available spectra.

Contribution

It provides a comprehensive, high-quality spectral atlas of massive stars in the K-band, including standards across various subclasses.

Findings

Spectra cover O2 to B1 spectral subclasses.

Spectra are telluric-corrected and publicly available.

High-resolution spectra enable detailed stellar analysis.

Abstract

A high-resolution ($\sim$45000), high signal-to-noise ($>$100) K-band spectral atlas of massive stars is presented. It includes 81 stars consisting of known optical standards, spanning spectral and luminosity subclasses from O2 to O9, and supergiant luminosity and spectral subclasses from O2-B1. The telluric-corrected reduced spectra are publicly available, and are discussed here.