CV
SUNGRYONG HONG
Korea Astronomy and Space Science Institute
776, Daedeok-daero, Yuseong-gu, Daejeon, 34055, Republic of Korea
Phone: +82-42-865-3332|Fax: +82-42-861-5610
Email: shongscience (a@t) kasi.re.kr
Office: +82) 42 - 865 - 2006
Gender : Male
RESEARCH INTERESTS
• Graph Theory in Astronomy : Topological Structures of Cosmic Matter Distribution, Complex Networks, Network Science
• Machine Learning in Astronomy : Automated Source Detection, Pattern Recognition and Classification
• Galaxy Formation and Evolution : Stellar Feedbacks, Galactic Outflows, Lyα Emitting Galaxies, Galaxy Clustering, Large-scale Structure
EDUCATION
PhD in Astronomy, The University of Massachusetts at Amherst (2004 - 2011)
Thesis : “Constraining Stellar Feedback : Shock-ionized Gas in Nearby Starburst Galaxies”
MS in Physics/StatMech Complex Networks, Seoul National University (1999 - 2003)
Thesis : “Avalanche Dynamics Driven by Adaptive Rewirings in Complex Networks”
Military Service in the Korean Army 1999-2001
BS in Astronomy, Seoul National University (1995 - 1999)
COMPUTER SKILLS
Softwares/APIs: pyspark, synapseml, tensorflow, pandas, scikitlearn, igraph, networkx, numpy, scipy
Programing Languages: Now mostly using Python (10+ years) and PySpark (7 years). I have used C, Fortran, C++, and Java before. I also had some experience in Assembly Language.
Training:
Undergraduate ComSci Courses; System Programming, Data Structure, Algorithm, and Language Paradigms,
Coursera Certificates; Google Cloud Platform Big Data and Machine Learning Fundamentals (PDF), Leveraging Unstructured Data with Cloud Dataproc on Google Cloud Platform (PDF)
OS: Mac, Linux, and Windows
Personal Github Repository: https://github.com/shongscience
Personal Data Science Blogs for Astronomers: Link-Here
EMPLOYMENT
Principal Scientist, Korea Astronomy and Space Science Institute (2023 - present)
Senior Scientist, Korea Astronomy and Space Science Institute (2019 - 2023)
Research Fellow, Korea Institute for Advanced Study (2017 - 2019)
Research Fellow, The University of Texas at Austin (2014 - 2017)
Post Doctoral Research Associate, National Optical Astronomy Observatory at Tucson (2011 - 2014)
REFREEED PUBLICATIONS
Pucha, R., et al., "Lyα Escape from Low-mass, Compact, High-redshift Galaxies", 2022, AJ, 164, 159
Gobat, R. , et al., "Panspermia in a Milky Way-like Galaxy", 2021, ApJ, 921, 157
Hong, S., et al., "Constraining Cosmology with Big Data Statistics of Cosmological Graphs", 2020, MNRAS, 493 (4), 5972-5986
Shi, K., et al., "A Census of Galaxy Constituents in a Coma Progenitor Observed at z > 3", 2019, ApJ, 871, 83
Hong, S., Dey, A., Lee, K., Orsi, A., Gebhardt, K., et al., "Statistics of Two-point Correlation and Network Topology for Lyman Alpha Emitters at z~2.67", 2019, MNRAS, 483, 3950
Lee, K. , et al., "Discovery of a Very Large (~20 kpc) Galaxy at z=3.72", 2018, ApJ, 862, 24
Xue, R., Lee, K., Dey, A., Reddy, N., Hong, S., Prescott, M. K. M., Inami, H., et al., "The Diversity of Diffuse Lyα Nebulae around Star-forming Galaxies at High Redshift", 2017, ApJ, 837, 172
Coutinho, B., Hong, S., Albrecht, K., Dey, A., Barabasi, A. -L., Torrey, P., Vogelsberger, M. , & Hernquist, L. , “The Network Behind the Cosmic Web”, 2016, arXiv:1604.03236
Hong, S., Coutinho, B., Dey, A., Barabasi, A. -L., Vogelsberger, M., Hernquist, L., & Gebhardt, K. , “Discriminating Topology in Galaxy Distributions using Network Analysis”, 2016, MNRAS, 459, 2690
Dey, A., Lee, K., Reddy, N., Cooper, M., Inami, H., Hong, S., Gonzalez, A. H., & Jannuzi, B. T., “Spectroscopic Confirmation of a Protocluster at z ≈ 3.786”, 2016, ApJ, 823, 11
Hong, S., & Dey, A., “Network Analysis of Cosmic Structures : Network Centrality and Topological Environment”, 2015, MNRAS, 450, 1999
Lee, K., Dey, A., Hong, S., et al., “Discovery of a Very Large Structure at z=3.78”, 2014, ApJ, 796, 126
Hong, S., Dey, A., & Prescott, K. M., “On the Automated and Objective Detection of Emission Lines in Faint-Object Spectroscopy”, 2014, PASP, 126, 1048
Hong, S., Calzetti, D., & Dickinson, M., “Quantitative Method for the Optimal Subtraction of Continuum Emission from Narrow-band Images: Skewness Transition Analysis”, 2014, PASP, 126, 79; The program and tutorial video about this method are available at : https://sites.google.com/site/shongcontisub/home
Liu, G., Calzetti, D., Hong, S., et al., “ Extinction and Dust Geometry in M83 H II Regions: an HST/WFC3 Study”, 2013, 778, 41
Hong, S., Calzetti, D., Gallagher, J. S., Martin, C. L., Conselice, C. J., & Pellerin, A., “Constraining Stellar Feedbacks: Shock–ionized Gas in Nearby Starburst Galaxies”, 2013, ApJ, 777, 63
Hong, S., Calzetti, D., Dopita, M. A., et al., “Large-scale Shock-ionized and Photo-ionized Gas in M83: the Impact of Star Formation”, 2011, ApJ, 731, 45
Li, Y., Calzetti, D., Kennicutt, R. C., Hong, S., Engelbracht, C. W., Dale, D. A., & Moustakas, J.,“Spitzer 70 μm Emission as a SFR Indicator for Sub–Galactic Regions”, 2010, ApJ, 725, 677
Calzetti, D., Wu, S.-Y., Hong, S., Kennicutt, R. C., et al., “The Calibration of Monochromatic Far-Infrared Star Formation Rate Indicators”, 2010, ApJ, 714, 1256
Boquien, M., Calzetti, D., Kennicutt, R. C., Dale, D., Engelbracht, C. W., Gordon, K. D., Hong, S., Lee, J. C., & Portouw, J., “Star-Forming or Starbursting? The Ultraviolet Conundrum”, 2009, ApJ, 706, 553
Rho, K., Hong, S. R., & Kahng, B., “Avalanche Dynamics Driven by Adaptive Rewirings in Complex Networks”, 2005, Journal of the Korean Physical Society, 47, 558
NON-REFREEED PUBLICATIONS
Hong, S., Katz, N., Dav ́e, R., Fardal, M., Kereˇs, D., & Oppenheimer, B. D., “Galactic Outflows and the Kinematics of Damped Lyman Alpha Absorbers”, 2010, (arXiv:1008.4242)
OBSERVATIONAL PROPOSAL and AWARDED FUNDING
“Stellar Populations and Ionization States of Lyman Alpha Emitters During the Epoch of Peak Star Formation”
PI: Naveen Reddy
Co-I: Arjun Dey, Sungryong Hong, Moire Prescott, and Benjamin Weiner
Telescope: HST, WFC3/IR; Cy22 GO-13785
“Impact of Environments on Lyman Alpha Emitting Galaxies at High Redshift (z ∼ 2.7)”
PI: Sungryong Hong
Co-I: Arjun Dey, Naveen A. Reddy, and Moire Prescott
Telescope: HST, WFC3/IR; Cy20 GO-13000 (Total: $107,636)
“Mapping the Cosmic Web at z ∼ 2.7”
PI: Arjun Dey
Co-I: Moire Prescott, and Sungryong Hong Telescope: MMT, Hectospec; PA-12A-0353
“Constraining Stellar Feedback : A Census of Shock-ionized Gas in Nearby Starbursts Galaxies.”
PI: Sungryong Hong
Co-I: Daniela Calzetti, John S. Gallagher III, and Mark S. Westmoquette
Telescope: HST, WFC3/UVIS; Cy19 GO-12497 (Total: $48,200)
“The Structure of Shock Fronts in Starburst Galaxies”
PI: Sungryong Hong
Co-I: Daniela Calzetti, John S. Gallagher III, and Mark S. Westmoquette
Telescope: Gemini-North, GMOS/IFU; 4 classical nights (Jan 22 - Jan 25 2010); GN-2009B-C-3
“Starburst-driven shocks and feedback in the near-IR at high resolution”
PI: Mark S. Westmoquette
Co-I: Linda J. Smith, John S. Gallagher III, Daniela Calzetti, and Sungryong Hong
Telescope: HST, WFC3/IR; Cy18 GO-12206