The Gaia Era: synergy between space missions and ground based surveys

TL;DR

The paper discusses how Gaia's precise space-based data, combined with ground-based surveys, enhances star classification and galaxy understanding, emphasizing the importance of multi-wavelength and follow-up observations.

Contribution

It presents aspects of Gaia's classification process and highlights the synergy with ground-based surveys for improved galactic studies.

Findings

Gaia will provide data for about 1 billion objects.

Complementary ground-based observations are crucial at faint magnitudes.

Multi-wavelength data enhances source classification and galaxy understanding.

Abstract

The Gaia mission is expected to provide highly accurate astrometric, photometric, and spectroscopic measurements for about $10^9$ objects. Automated classification of detected sources is a key part of the data processing. Here a few aspects of the Gaia classification process are presented. Information from other surveys at longer wavelengths, and from follow-up ground based observations will be complementary to Gaia data especially at faint magnitudes, and will offer a great opportunity to understand our Galaxy.