27 citations · 42 across the 4 of their papers we have counts for
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Long-term Periodicities of Cataclysmic Variables with Synoptic Surveys
Michael Ting-Chang Yang, Yi Chou, Chow-Choong Ngeow +12
A systematic study on the long-term periodicities of known Galactic cataclysmic variables (CVs) was conducted. Among 1580 known CVs, 344 sources were matched and extracted from the…
VI-Band Follow-Up Observations of Ultra-Long-Period Cepheid Candidates in M31
Chow-Choong Ngeow, Chien-Hsiu Lee, Michael Ting-Chang Yang +7
The ultra-long period Cepheids (ULPCs) are classical Cepheids with pulsation periods exceeding days. The intrinsic brightness of ULPCs are ~1 to ~3 mag brighter than t…
Using the Palomar Transient Factory to Search for Ultra-Long-Period Cepheid Candidates in M31
Chien-Hsiu Lee, Chow-Choong Ngeow, Michael Ting-Chang Yang +4
Ultra-long-period Cepheids (ULPCs) are important in distance-scale studies due to their potential for determining distance beyond ~100 Mpc. We performed a comprehensive search for…