A high resolution, multi-epoch spectral atlas of peculiar stars including RAVE, GAIA and HERMES wavelength ranges

TL;DR

This paper provides a high-resolution, multi-epoch spectral atlas of 108 peculiar stars across key wavelength ranges, supporting classification, comparison, and automated analysis in large-scale stellar surveys.

Contribution

It introduces a comprehensive, homogeneous spectral atlas with multi-epoch data for peculiar stars, including auxiliary materials, to aid classification and automated survey analysis.

Findings

425 spectra of peculiar stars collected over 56 nights

Spectra cover 4600-9400 Angstroms, including RAVE, Gaia, HERMES ranges

Atlas facilitates classification and automated analysis of peculiar stars

Abstract

We present an Echelle+CCD, high S/N, high resolution (R = 20\,000) spectroscopic atlas of 108 well-known objects representative of the most common types of peculiar and variable stars. The wavelength interval extends from 4600 to 9400 Ang, and includes the RAVE, Gaia and HERMES wavelength ranges. Multi-epoch spectra are provided for the majority of observed stars. A total of 425 spectra of peculiar stars are presented, which have been collected during 56 observing nights between November 1998 and August 2002. The spectra are given in FITS format and heliocentric wavelengths, with accurate subtraction of both the sky background and the scattered light. Auxiliary material useful for custom applications (telluric dividers, spectro-photometric stars, flat-field tracings) is also provided. The atlas aims to provide a homogeneous database of the spectral appearance of stellar peculiarities, a tool useful both for classification purposes and inter-comparison studies. It could also serve the planning for and training of automated classification algorithms designed for RAVE, Gaia, HERMES and other large scale spectral surveys. The spectrum of XX Oph is discussed in some detail as an example of the content of the present atlas.