224 citations · 580 across the 31 of their papers we have counts for
32 papers
The Double-lined Eclipsing Doradus System AX Draconis in a 0.568-day Orbit
Jae Woo Lee, Min-Ji Jeong, Kyeongsoo Hong +3
For the near-contact binary AX Dra, we present the first time-series spectroscopy collected with the echelle spectrograph BOES. From spectral analysis, we measured the projected ro…
The Pre-He White Dwarfs in Eclipsing Binaries. V. TIC 399725538
Jae Woo Lee, Kyeongsoo Hong, Min-Ji Jeong +2
We present echelle spectra of TIC 399725538 obtained in Korea and Thailand to investigate the physical properties and evolutionary scenarios of EL CVn-type binaries. The time-serie…
TIC 322208686: An Eclipsing System with Doradus Pulsations and a Third Component on a Wider Orbit
Jae Woo Lee, Kyeongsoo Hong, Min-Ji Jeong +3
TIC 322208686 is known to be a detached binary that exhibits two types of variability: pulsation and eclipse. We present the physical properties of the target star using the short-…
The Low Mass Ratio Overcontact Binary GV Leonis and Its Circumbinary Companion
Jae Woo Lee, Jang-Ho Park, Mi-Hwa Song +2
Photometric and spectroscopic observations of GV Leo were performed from 2017 to 2024. The light curves show a flat bottom at the primary eclipse and the conventional O'Connell eff…
Absolute Properties of the Oscillating Eclipsing Algol XZ Ursae Majoris
Jae Woo Lee, Kyeongsoo Hong, Hye-Young Kim +3
It is known from archival TESS data that the semi-detached Algol system XZ UMa is one of the candidate binary stars exhibiting short-period oscillations. We secured new high-resolu…
Improved period variations of 32 contact binaries with rapidly decreasing periods in the Galactic Bulge
Kyeongsoo Hong, Jae Woo Lee, Dong-Jin Kim +4
We present detailed analyses of updated eclipse timing diagrams for 32 contact binary merger candidates in the Galactic bulge. The photometric data was obtained from 2016 to 2021 u…