Periodic Changes in Radius, Temperature, and Luminosity in the Pulsation of HADS-Type Variable Stars V451 Draconis, NP Lyncis, V460 Andromedae, V417 Bootis, and 2MASS J01462408+4913115
Volume 54 number 2 (2026)
- Moyuru Nakamori
- Hiroshima International School; Hiroshima City, Hiroshima Prefecture, Japan; moyuruseal0321@gmail.com
- Yuno Kondo
- Fuji Sacred Heart School; Susono City, Shizuoka Prefecture, Japan; ykss05300125@gmail.com
- Yumeto Yamada
- Ibaraki High School; Mito City, Ibaraki Prefecture, Japan; megane.beans132109@gmail.com
- Satsuki Abe
- Morioka Daisan High School; Morioka City, Iwate Prefecture, Japan; satsukiazalea0517@gmail.com
Abstract
We investigated the phase-dependent relationships among luminosity, temperature, and radius in select High-Amplitude δ Scuti (HADS-type) variable stars using archived photometric data from the Zwicky Transient Facility (ZTF). Light curves were phase-folded, effective temperatures were estimated from color indices, and stellar radii were derived assuming blackbody radiation. The analysis showed that stars with similar luminosity amplitudes exhibited different temperature and radius variations, suggesting that luminosity changes do not uniquely determine the underlying physical variations.