연구활동 Research activities

논문
  • [국외]
  • A Comparative Study between M30 and M92: M92 is a Merger Remnant with a Large Helium Enhancement, Astrophysical Journal 961 (2024)
  • Carbon Abundance of Globular Cluster M22 (NGC 6656) and the Surface Carbon Depletion Rates of the Milky Way Globular Clusters, ASTROPHYSICAL JOURNAL LETTERS 950 (2023)
  • M92 (NGC 6341) Is a Metal-complex Globular Cluster with an Atypical Primordial Population, ASTROPHYSICAL JOURNAL LETTERS 948 (2023)
  • Isochrone fitting of Galactic globular clusters - IV. NGC 6362 and NGC 6723, Monthly Notices of the Royal Astronomical Society 518 (2023)
  • Multiple Stellar Populations of Globular Clusters from Homogeneous Ca-CN-CH-NH Photometry. VII. Metal-poor Populations in 47 Tucanae (NGC 104), ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 263 (2022)
  • Formation of Multiple Populations of M5 (NGC 5904), Astrophysical Journal Letters 918 (2021)
  • Multiple Stellar Populations of Globular Clusters from Homogeneous Ca–CN–CH–NH Photometry. VI. M3 (NGC 5272) Is Not a Prototypical Normal Globular Cluster, Astrophysical Journal 909 (2021)
  • Five Stellar Populations in M22 (NGC 6656), ASTROPHYSICAL JOURNAL LETTERS 888 (2020)
  • Multiple Stellar Populations of Globular Clusters from Homogeneous Ca-CN-CH Photometry. V. cn '(JWL) as a Surrogate cn(JWL) Index and NGC 6723, Astrophysical Journal 883 (2019)
  • Structure of Our Galactic Bulge from CN Measurements, ASTROPHYSICAL JOURNAL LETTERS 875 (2019)
  • Multiple Stellar Populations of Globular Clusters from Homogeneous Ca-CN Photometry. IV. Toward Precision Populational Tagging, ASTROPHYSICAL JOURNAL 872 (2019)
  • Multiple Stellar Populations of Globular Clusters from Homogeneous Ca-CN Photometry. III. NGC 6752, ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 238 (2018)
  • Medium-resolution Spectroscopy of Red Giant Branch Stars in omega Centauri, ASTRONOMICAL JOURNAL 154 (2017)
  • Multiple Stellar Populations of Globular Clusters from Homogeneous Ca-CN Photometry. II. M5 (NGC 5904) and a New Filter System, ASTROPHYSICAL JOURNAL 844 (2017)
  • ON THE METALLICITY DISTRIBUTION OF THE PECULIAR GLOBULAR CLUSTER M22, ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 226 (2016)
  • THE DISTANCES TO OPEN CLUSTERS FROM MAIN-SEQUENCE FITTING. V. EXTENSION OF COLOR CALIBRATION AND TEST USING COOL AND METAL-RICH STARS IN NGC 6791, Astrophysical Journal 811 (2015)
  • Multiple stellar populations of globular clusters from homogeneous Ca by photometry. I. M22 (NGC 6656), Astrophysical Journal Supplement Series 219 (2015)
  • THE CHEMICAL COMPOSITION OF rho PUPPIS AND THE SIGNS OF ACCRETION IN THE ATMOSPHERES OF B-F-TYPE STARS, ASTRONOMICAL JOURNAL 149 (2015)
  • LOW-RESOLUTION SPECTROSCOPY FOR THE GLOBULAR CLUSTERS WITH SIGNS OF SUPERNOVA ENRICHMENT: M22, NGC 1851, AND NGC 288, Astrophysical Journal Supplement Series 216 (2015)
  • TOWARD A BETTER UNDERSTANDING OF THE DISTANCE SCALE FROM RR LYRAE VARIABLE STARS:A CASE STUDY FOR THE INNER HALO GLOBULAR CLUSTER NGC 6723, Astrophysical Journal Supplement Series 210 (2014)
  • A COMPARISON BETWEEN THE STELLAR AND DYNAMICAL MASSES OF SIX GLOBULAR CLUSTERS, The Astrophysical Journal 755-2 (2012)
  • STELLAR VARIABILITY OF THE EXOPLANET HOSTING STAR HD 63454, The Astrophysical Journal 737-2 (2011)
  • Two Distinct Red Giant Branches in the Globular Cluster NGC 288, The Astrophysical Journal Letters 733-2 (2011)
  • Variations in the Na-O anticorrelation in globular clusters: evidence for a deep mixing episode in red giant branch stars, Monthly Notices of the Royal Astronomical Society 405-1 (2010)
  • The Presence of Two Distinct Red Giant Branches in the Globular Cluster NGC 1851, The Astrophysical Journal Letters 707 (2009)
  • Enrichment by supernovae in globular clusters with multiple populations, Nature 462 (2009)
  • Chemical Inhomogeneity in Red Giant Branch Stars and RR lyrae variables in NGC 1851: Two Subpopulations in Red Giant Branch, The Astrophysical Journal Letters 695 (2009)
  • A Chemical Abundance Study of three RHB and two RGB stars in NGC 6637 (M69), Revista Mexicana de Astronomia y Astrofisica 28 (2007)
  • VI Photometry of Globular Clusters NGC 6293 and NGC 6541 : The Formation of the Metal-Poor Inner Halo Globular Clusters, The Astronomical Journal 132 (2006)
  • A Chemical Abundance Study of One Red Giant Star in NGC 5694: A Globular Cluster with a Dwarf Spheroidal Chemical Signature?, Astrophysical Journal 646 (2006)
  • Infrared Photometry of NGC 6791, Astronomical Journal 129 (2005)
  • The Look-Back Time Evolution of Far-UV Flux from Elliptical Galaxies : The Fornax Cluster and Abell 2670, Astrophysical Journal Letters 619 (2005)
  • Chemical Abundances for Seven Giant Stars in M68 (NGC4590), Astronomical Journal 129 (2005)
  • GALEX Ultarviolet Photometry of Globular Clusters in M31, Astrophysical Journal Letters 619 (2005)
  • GALEX UV Color-Magnitude Relations and Evidence for Recent Star Formation in Early-Type Galaxies, Astrophysical Journal Letters 619 (2005)
  • High-Resolution Spectroscopy of 15 Metal-Poor Stars, Key Engineering Materials 277-279 (2005)

  •  
  • [국내]
  • LONG-TERM VARIATION OF THE SHUTTER DELAY TIME OF Y4KCAM OF THE CTIO 1.0 M TELESCOPE, Journal Of The Korean Astronomical Society 49 (2016)
  • The Evolutionary Statues of Solar Type Detached Eclipsing Binary Stars, Journal of Astronomy and Space Science 29(2) (2012)
저역서
  • 작은 은하 잡아먹던 과거, 2010-07
학술발표
  • Exploring Multiple Populations in Globular Clusters using an Innovative Near-Infrared Photometry with BOAO/KASINICS, 한국천문학회 2023 가을 학술대회(한국천문학회), 2023-10
  • Near-Infrared Approach to Multiple Populations of Globular Clusters using BOAO/KASINICS, 한국천문학회 2023 봄 학술대회(한국천문학회), 2023-04
  • Messier 3: An Extra-Galactic System with Two Globular Clusters, 한국 천문학회 2021년도 봄 학술대회(한국 천문학회), 2021-04
  • Ca-CN-CH Photometry: New Photometric System for Multiple Stellar Populations in Globular Clusters, The 21st Century H-R Diagram: The Power of Precision Photometry(Space Telescope Science Institute (미국NASA 우주망원경연구소), 2018-04
  • A Chemical Abundance Study of 47 Tuc based on HYDRA spectroscopy, 한국천문학회2017년 가을 학술대회(한국천문학회), 2017-10
  • Ca-CN Photometry of M5: A New Saga Begins, 한국천문학회2017년 가을 학술대회(한국천문학회), 2017-10
  • High resolution spectroscopic study of the peculiar globular cluster M22 (NGC 6656), 한국천문학회2017년 가을 학술대회(한국천문학회), 2017-10
  • Medium resoultion spectroscopy of red giant stars in Omega Centauri, 한국천문학회 2016가을학술대회(한국천문학회), 2016-10
  • New photometric system for CN and CH, 한국천문학회 2016가을학술대회(한국천문학회), 2016-10
  • The curious case of M22, European Week of Astronomy and Space Science(European Astronomical Society), 2016-07
  • Sejong Ca-CN Survey of Southern Globular Clusters, Multiple populations in globular clusters:"Where do we stand?"(European Research Council), 2016-07
  • On the equivalenet measurements of high-resolution spectra, 한국천문학회 2016봄학술대회(한국천문학회), 2016-04
  • It is surface gravity, 한국천문학회 2016봄 학술대회(한국천문학회), 2016-04
  • Extention of Empirical Color Calibration and Test using Cool and Metal-Rich Stars in NGC 6791, IAU General Assembly(American Astronomical Society, 한국천문학회), 2015-08
  • On the long-term stability of the Y4KCam shutter, 2015년도 한국 천문학회 봄 학술대회(한국천문학회), 2015-04
  • Distance and Reddening of NGC 6791 using Empirically Calibrated Isochrones, 2015 한국천문학회 봄 학술대회(한국천문학회), 2015-04
  • A Progress Report on the Sejong Ca-CN Survey, 10th Pacific Rim Conference on Stellar Astrophysics(Sejong University), 2013-05
  • Multiple Stellar Populations of Globular Clusters through Ca by photometry, IAU 2012 General Assembly Special Session 1 Origin and Complexity of Massive Star Clusters, 2012-08
  • Multiple Stellar Populations of Globular Clusters, 11th Asian-Pacific Regional IAU Meeting (APRIM2011)(APRIM2011), 2011-07
  • 구상성단의 다중항성종족, 한국우주과학회 2010년 가을학술대회, 2010-10
  • Multiple Populations of GCs Seen from Ca uvby Photometry, GMT 2010: Opening new frontiers with the Giant Magellan Telescope(한국천문연구원)(한국천문연구원), 2010-10
  • Multiple populations of GCs seen from Ca uvby photometry, Multiple populations in globular clusters, 2010-09
  • 항성종족론 연구의 신중흥기, 2010년도 한국천문학회 봄 학술대회, 2010-04
  • Variations in the Na-O anticorrelation in globular clusters, 한국우주과학회 2010년 봄 학술대회, 2010-04
  • Exploring Multiple Populations in Globular Clusters using Ca uvby photometry: Case Studies for NGC 6218 and NGC 6752, 한국우주과학회, 2009-10
  • Sejong Ca uvby Survey hits the Jackpot: New Perspective on the Multiple Populations in Globular Clusters and Galaxy Formations, 한국천문학회, 2009-10
  • Ca uvby photometry of the Galactic globular clusters NGC 6121 (M4) and NGC 5904 (M5), 한국천문학회, 2009-10
  • The Presence of Two Distinct Red Giant Branches in the Globular Cluster NGC 1851, 한국천문학회, 2009-10
  • Supernovae enrichment in the globular clusters with multiple populations, 제 42회 한림심포지움, 2009-09
  • 중금속함량이 낮은 거성의 중성자 포획 원소 함량, 한국천문학회 2008 가을학술대회, 2008-10
  • Chemical inhomogeneity in red giant branch stars and RR Lyrae variables in NGC1851, 한국천문학회 2008 가을 학술대회, 2008-10
  • Neutron capture elements in metal-poor giants, 한국우주과학회 2008 가을학술대회, 2008-10
  • Extremely metal-poor stars in the Galactic bulge, 한국천문학회 2008 봄 학술대회, 2008-04
  • A Chemical Abundance Study of three RHB and two RGB stars in NGC 6637 (M69), Astronomical Society of the Pacific Conference Series, 2007-04
  • Chemical Abundance Study of NGC 5694: A Globular Cluster with a Dwarf Spheroidal Chemical Signature?, 한국우주과학회, 2006-04
  • Chemical Abundances of Metal-Rich Globular Clusters NGC6637, 7th Pacific Rim Conference on Stellar Astrophysics, 2005-11
  • High Resolution Spectroscopy of RHB and RGB Stars in NGC6637, 한국천문학회, 2005-10
  • 우리은하의 형성과 진화, 대형망원경 워크샾(한국천문학회)(한국천문학회), 2005-06
  • [Si/Ti] elemental ratios in 9 old halo globular clusters, IAU Symposium 228, 2005-05
  • GALEX Look-back Time Evolution of Far-UV from Quiescent Elliptical Galaxies, 한국천문학회, 2005-05
  • Alpha-element Abundances in 9 Old Halo Globular Clusters, 한국천문학회, 2005-04
  • Super-Helium-Rich Populations in Globular Clusters, 한국천문학회, 2005-04
  • Look-back Time Evolution of Far-UV Flux from Quiescent Elliptical Galaxies, 한국우주과학회, 2005-04
  • GALEX Observations of Nearby Early Type Galaxies, 한국천문학회, 2005-04
  • GALEX nearby Galaxy Survey, 한국천문학회, 2005-04
  • Chemical Abundances for Seven Giant Stars in M68 (NGC4590), 205th Meeting of the American Astronomical Society, 2005-01