# The WAGGS project - I. The WiFeS Atlas of Galactic Globular cluster Spectra

## TL;DR

This paper introduces the WiFeS Atlas, a comprehensive spectral library of 86 globular clusters from the Milky Way and nearby galaxies, with high resolution and broad wavelength coverage, aiding stellar population studies.

## Contribution

The paper presents a new, high-resolution spectral library of globular clusters with extended age and metallicity coverage, including Magellanic Cloud clusters, for improved stellar population analysis.

## Key findings

- Spectra cover 3300 Å to 9050 Å at R=6800 resolution.
- Includes Milky Way and Magellanic Cloud clusters, extending parameter space.
- Publicly available spectra facilitate comparison with models and extragalactic observations.

## Abstract

We present the WiFeS Atlas of Galactic Globular cluster Spectra, a library of integrated spectra of Milky Way and Local Group globular clusters. We used the WiFeS integral field spectrograph on the Australian National University 2.3 m telescope to observe the central regions of 64 Milky Way globular clusters and 22 globular clusters hosted by the Milky Way's low mass satellite galaxies. The spectra have wider wavelength coverage (3300 {\AA} to 9050 {\AA}) and higher spectral resolution (R = 6800) than existing spectral libraries of Milky Way globular clusters. By including Large and Small Magellanic Cloud star clusters, we extend the coverage of parameter space of existing libraries towards young and intermediate ages. While testing stellar population synthesis models and analysis techniques is the main aim of this library, the observations may also further our understanding of the stellar populations of Local Group globular clusters and make possible the direct comparison of extragalactic globular cluster integrated light observations with well understood globular clusters in the Milky Way. The integrated spectra are publicly available via the project website.