Simultaneous observations of NGC 4151 and UGC 3374 show that ICCF-Cut photometric Hα light curves and lags match spectroscopic results within uncertainties, with minor discrepancies attributed to He I contamination that can be corrected.
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The Stetson J index remains robust to changes in baseline, cadence, and host contamination for AGN variability, whereas the smoothness metric s shows large variations with cadence and host subtraction.
citing papers explorer
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Validating the ICCF-Cut Method with Simultaneous Photometric and Spectroscopic H$\alpha$ Reverberation Mapping of NGC 4151 and UGC 3374
Simultaneous observations of NGC 4151 and UGC 3374 show that ICCF-Cut photometric Hα light curves and lags match spectroscopic results within uncertainties, with minor discrepancies attributed to He I contamination that can be corrected.
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Impact of Baseline, Cadence, and Host Contamination on AGN Variability Metrics: A Systematic Study with ZTF
The Stetson J index remains robust to changes in baseline, cadence, and host contamination for AGN variability, whereas the smoothness metric s shows large variations with cadence and host subtraction.