2025 天文年會 (ASROC Annual Meeting)

Validating the Reliability of Distance Estimation Using RR Lyrae gri-Band Period-Luminosity-Metallicity Relations

Not scheduled

20m

International Conference Hall 圓形國際會議廳 (College of Management, National Formosa University 國立虎尾科技大學第三校區文理暨管理大樓)

Board: 13

Poster Poster-Stars

Speaker

Pin-Hsien Lai (Graduate Institute of Astronomy, National Central Universe)

Description

We compared several empirical period-luminosity-metallicity (PLZ) and period-Wesenheit-metallicity (PWZ) relations of RR Lyrae stars to evaluate their validity and precision in distance estimation. Our analysis used data from various observations and surveys of the Large Magellanic Cloud as benchmarks. We further investigated intrinsic factors contributing to discrepancies among the empirical relations. A detailed analysis of RR Lyrae PLZ/PWZ relations can help reduce distance estimation biases in future surveys, including LSST and others equipped with Sloan-like filters.