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arXiv · 2407.21388

Differences between Gaia DR2 and Gaia EDR3 photometry: demonstration, consequences, and applications

J. Maíz Apellániz·M. Weiler
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Abstract

We produce a new photometric calibration for the combined six-filter system formed by $Gaia$ DR2 + EDR3 $G$+$G_{\rm BP}$+$G_{\rm RP}$ using an improved STIS/HST spectrophotometric library with very red stars. The comparison between observed and synthetic photometry yields residual dispersions of just 3.4-8.7 mmag, resulting in the most accurate and precise whole-sky large-dynamic-range optical photometric system ever obtained. We include some tests and applications.

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J. Maíz Apellániz, M. Weiler. 2024-07-31. Differences between Gaia DR2 and Gaia EDR3 photometry: demonstration, consequences, and applications. https://arxiv.org/abs/2407.21388

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