Computing natural magnitudes in the photometric systems of astronomical plates using Gaia DR3 spectral energy distributions

Open Access

Fig. 8

Difference Δ = m_synth − m_JKC versus color index JKC_bv = B_JKC − V_{JKC_V} for all identified and cleaned APPLAUSE DR3 data with Gaia DR3 matched stars using synthetic Johnson-Cousins magnitudes from Gaia DR3 for plate 12368, Großer Schmidt-Spiegel, Hamburg Observatory, 12.12.1968, Kodak IIa-O with filter GG13(=385), and scan 14850 (color term 0.826). Dwarfs and giants, classified using log g from Gaia DR3, are shown in different colors.

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