activity
20092025
most citedC, N, O, and Na Abundances of Cepheid Variables: Implications on the Mixing Process in the Envelope

35 citations · 98 across the 8 of their papers we have counts for

collaborators

8 papers

astro-ph.EP2025★ 4 cited

An Early Look at the Performance of IGRINS-2 at Gemini-North with Application to the ultrahot Jupiter, WASP-33 b

Yeon-Ho Choi, Ueejeong Jeong, Jae-Joon Lee +56

Ground-based high-resolution spectroscopy enables precise molecular detections and velocity-resolved atmospheric dynamics, offering a distinct advantage over low-resolution methods…

astro-ph.EP2024

SPECtrophotometer for TRansmission spectroscopy of exoplanets (SPECTR)

Yeon-Ho Choi, Myeong-Gu Park, Kang-Min Kim +9

The SPECtrophotometer for TRansmission spectroscopy of exoplanets (SPECTR) is a new low-resolution optical (3800 Å - 6850 Å) spectrophotometer installed at the Bohyunsan Optical As…

astro-ph.SR2014★ 3 cited

Low-amplitude and long-period radial velocity variations in giants HD 3574, 63 Cygni, and HD 216946 (Research Note)

B. -C. Lee, I. Han, M. -G. Park +2

Aims. We study the low-amplitude and long-period variations in evolved stars using precise radial velocity measurements. Methods. The high-resolution, fiber-fed Bohyunsan Observato…

astro-ph.EP2014★ 20 cited

Planetary companions in K giants beta Cancri, mu Leonis, and beta Ursae Minoris

B. -C. Lee, I. Han, M. -G. Park +3

Auns. The aim of our paper is to investigate the low-amplitude and long-period variations in evolved stars with a precise radial velocity (RV) survey. Methods. The high-resolution,…

astro-ph.SR2013★ 35 cited

C, N, O, and Na Abundances of Cepheid Variables: Implications on the Mixing Process in the Envelope

Y. Takeda, D. -I. Kang, I. Han +2

With an aim of investigating the nature of evolution-induced mixing in the envelope of evolved intermediate-mass stars, we carried out an extensive spectroscopic study for 12 Cephe…

astro-ph.SR2012★ 14 cited

Detection of an exoplanet around the evolved K giant HD 66141

B. -C. Lee, D. E. Mkrtichian, I. Han +2

Aims. We have been carrying out a precise radial velocity (RV) survey for K giants to search for and study the origin of the lowamplitude and long-periodic RV variations. Methods.…

astro-ph.SR2012★ 8 cited

Chemical composition of giants from two moving groups

F. Liu, Y. Q. Chen, G. Zhao +4

We present stellar parameters of 19 K-type giants and their abundances of 13 chemical elements (Al, Ba, Ca, Fe, K, Mg, Mn, Na, Ni, Sc, Si, Ti and V), selected from two moving group…

astro-ph.SR2009★ 14 cited

The Lorentz force in atmospheres of CP stars: 56 Arietis

D. Shulyak, O. Kochukhov, G. Valyavin +5

The presence of electric currents in the atmospheres of magnetic chemically peculiar (mCP) stars could bring important theoretical constrains about the nature and evolution of magn…