Differences between Gaia DR2 and Gaia EDR3 photometry: demonstration, consequences, and applications
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arXiv
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| Format: | Preprint |
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2024
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| _version_ | 1866917793833680896 |
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| author | Apellániz, J. Maíz Weiler, M. |
| author_facet | Apellániz, J. Maíz Weiler, M. |
| contents | 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. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2407_21388 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Differences between Gaia DR2 and Gaia EDR3 photometry: demonstration, consequences, and applications Apellániz, J. Maíz Weiler, M. Instrumentation and Methods for Astrophysics Astrophysics of Galaxies Solar and Stellar Astrophysics 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. |
| title | Differences between Gaia DR2 and Gaia EDR3 photometry: demonstration, consequences, and applications |
| topic | Instrumentation and Methods for Astrophysics Astrophysics of Galaxies Solar and Stellar Astrophysics |
| url | https://arxiv.org/abs/2407.21388 |