6 citations · 8 across the 8 of their papers we have counts for
8 papers
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-…
Identification of Likely Methane Absorption Features in the Optical Spectra of Titan
Sirinrat Sithajan, Lalita Kaewbiang, Hugh R. A. Jones +2
The optical spectra of Titan reveal a rich set of absorption features, most of which are likely associated with methane (CH). Methane is a key molecule in planetary and exoplan…
Characterisation of H spectra from EXO 051910+3737.7 X-rays binaries
Pornisara Nuchvanichakul, Puji Irawati, Pakakaew Rittipruk +4
We investigate the spectral characteristics of the Be/X-ray binary system, EXO 051910+3737.7, in which Be/X-ray systems are the largest sub-class of high-mass X-ray binaries. Spect…
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…
Eclipse timing variations in the WD+dM eclipsing binary RR Cae
R. Rattanamala, S. Awiphan, S. Komonjinda +9
We present the binary model and the eclipse timing variations of the eclipsing binary RR Cae, which consists of a white dwarf eclipsed by an M-type dwarf companion. The multi-wavel…
Deep Contrast and Companion Detection Using the EvWaCo Testbed Equipped with an Achromatic Focal Plane Mask and an Adjustable Inner Working Angle
M. A. Alagao, A. Kawinkij, C. Buisset +21
The evanescent wave coronagraph uses the principle of frustrated total internal reflection (FTIR) to suppress the light coming from the star and study its close environment. Its fo…