Gaia FGK Benchmark Stars and their reference parameters

TL;DR

This paper discusses the ongoing development of Gaia FGK Benchmark Stars, focusing on their atmospheric parameters and spectral library, which are essential for analyzing large spectroscopic surveys and understanding galactic structure.

Contribution

It provides a comprehensive summary of the current efforts to determine reference parameters and build a spectral library for Gaia FGK Benchmark Stars, aiding large-scale stellar analysis.

Findings

Compilation of a high-resolution spectral library.

Homogeneous and well-documented stellar parameters established.

Enhanced tools for analyzing large spectroscopic surveys.

Abstract

In this article we summarise on-going work on the so-called Gaia FGK Benchmark Stars. This work consists of the determination of their atmospheric parameters and of the construction of a high-resolution spectral library. The definition of such a set of reference stars has become crucial in the current era of large spectroscopic surveys. Only with homogeneous and well documented stellar parameters can one exploit these surveys consistently and understand the structure and history of the Milky Way and therefore other of galaxies in the Universe.