HST obs. of NGC4258 Cepheids and HII regions
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https://b2find.eudat.eu/dataset/ea6d864e-e380-5a94-ae26-4cc3e1b22a8a
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Owing to its accurate distance measured from water-maser motions, NGC4258 is one of the most important anchors for calibrating the Cepheid period-luminosity relations (PLRs). We...
