Research Page

My current research focuses on observation and simulation studies of galaxy clusters. I specialize in SED fitting and make extensive use of spectroscopic redshift catalogs.

Jong-In Park's 1st-Author Papers (ADS Library) Jong-In Park's All Papers (ADS Library) Jong-In Park's ORCID Jong-In Park's Google Scholar

Selected Publications

The Stellar Mass Function for Nine Massive Galaxy Clusters in the Local Universe

Jong-In Park, Jubee Sohn, Margaret J. Geller, Kenneth J. Rines, Antonaldo Diaferio

The Astrophysical Journal · 2026

ADS arXiv DOI Github

A redshift survey of the nearby galaxy cluster Abell 2199: No upturn of the faint-end slope of galaxy luminosity function

Jong-In Park, Hyunmi Song, Ho Seong Hwang

Journal of Korean Astronomical Society · 2026

ADS arXiv DOI Github

Weak-Lensing Analysis of the Galaxy Cluster Abell 85: Constraints on the Merger Scenarios of Its Southern Subcluster

Soojin Kim, Kim HyeongHan, Wonki Lee, Jong-In Park, M. James Jee, Ho Seong Hwang

The Astrophysical Journal · 2026

ADS arXiv DOI

Projects

Each card links to a project page with more detail.

MIYU

A mathematical framework for deprojection (recovering 3D information from the 2D observational plane) to measure stellar mass fraction in galaxy clusters.

SPHEREx

Extensive multi-band SED fitting analysis using SPHEREx IR data.

Talks

Galaxy Stellar Mass Function of Local Massive Clusters Based on Dense Spectroscopy · YouTube link CL2025: Entering a Golden Age of Galaxy Cluster Studies, ASIAA, 2025-09-23
The Galaxy Stellar Mass Function of Very Massive Clusters The 2nd Workshop on Galaxies and Dark Matter, Seoul National University, 2024-02-27

Posters

Measuring The Stellar Mass Function of Massive Galaxy Clusters using Dense Spectroscopic Surveys (Jong-In Park, Jubee Sohn), 2023 Fall Korean Astronomical Society Meeting, Jeju, 2023-10
Stellar Mass and Luminosity Function of Extremely low-mass clusters (Anthony McCarthy, Jong-In Park, Jubee Sohn), 2025 Spring Korean Astronomical Society Meeting, 2025-04
Weak-Lensing Analysis of the Galaxy Cluster Abell 85: Implications for the Merger Scenario of Its Southern Subcluster (Soojin Kim, Kim HyeongHan, Wonki Lee, Jong-In Park, Ho Seong Hwang), 2025 Merging Clusters Workshop, 2025-10