Testing Area of the SAGE Survey

TL;DR

This paper discusses the testing phase of the SAGE survey, detailing data reduction processes for a specific field to support large-scale stellar and galactic studies using a new photometric system.

Contribution

It introduces the data reduction methodology and catalog properties for the SAGE survey's initial testing field, aiding future stellar and galactic research.

Findings

Successful data reduction of the testing field NGC 6791

Creation of a detailed stellar catalog for the field

Validation of the SAGE photometric system

Abstract

Sky survey is one of the most important motivations to improve the astrophysics development, especially when using new photometric bands. We are performing the SAGE (Stellar Abundance and Galactic Evolution) survey with a self-designed SAGE photometric system, which is composed of eight photometric bands. The project mainly aims to study the stellar atmospheric parameters of $\sim$0.5 billion stars in the $\sim12,000$ deg$^2$ of the northern sky, which mainly focuses on the Galactic sciences, as well as some extragalactic sciences. This work introduces the detailed data reduction process of the testing field NGC\,6791, including the data reduction of single-exposure image and stacking multi-exposure images, and properties of the final catalogue.