Isochrone fitting in the Gaia era. II. Distances, ages and masses from UniDAM using Gaia DR2 data

TL;DR

This paper uses Gaia DR2 data combined with spectrophotometric information to estimate distances, ages, and masses for over 3.5 million stars, enhancing stellar parameter determination.

Contribution

It applies the UniDAM tool to Gaia DR2 data, providing a large-scale, integrated approach for stellar parameter estimation.

Findings

Estimated parameters for 3.5 million stars.

Improved accuracy in stellar distances, ages, and masses.

Demonstrated effectiveness of combining spectrophotometry with Gaia data.

Abstract

We present estimates of distances, ages and masses for over 3.5 million stars. These estimates are derived from the combination of spectrophotometric data and Gaia DR2 parallaxes. For that, we used the previously published Unified tool to estimate Distances, Ages, and Masses (UniDAM).