The period-luminosity relation. IV - Intrinsic relations and reddenings for the Large Magellanic Cloud Cepheids

Key Points

• The aim is to investigate the intrinsic calibration of the period-luminosity relation for Cepheids in the Large Magellanic Cloud.
• Utilized period, amplitude, and Wesenheit function to analyze Cepheids' light properties.
• Applied photoelectric B and V band photometry in the Large Magellanic Cloud (LMC).
• Inverted relations to determine individual reddenings of Cepheids.
• Detected varying reddening levels in individual Cepheids, confirming internal absorption in the LMC.
• Established that longer-period Cepheids are more obscured than shorter-period ones.
• Amplitude increases systematically toward the cool edge of the instability strip.

Abstract