2 papers
astro-ph.SR2026
CW Cas: A solar-type contact binary system with an unseen third companion in a hierarchical quadruple system
Matekov Azizbek, Azizbek Matekov, Zhu Liying +25
We present a comprehensive multiband photometric and spectroscopic study of the G-type binary CW Cas whose parameters have not been well determined. Our double-lined spectroscopic…
astro-ph.SR2026
IY Lyr: A Thick-Disk first-overtone RR Lyrae Star with a Possible Neutron Star Companion
Linjia Li, Shengbang Qian, Ildar Asfandiyarov +10
IY Lyr, historically misclassified as an eclipsing binary, has been previously identified as a first-overtone RR Lyrae star (RRc star). Using multiband photometry (All-Sky Automate…