activity
20242026
collaborators

7 papers

astro-ph.GA2026

Comparing the Near-infrared Spectral Energy Distributions from Different Stellar Population Synthesis Models with SPHEREx Observations

Jeong Hwan Lee, Minjin Kim, Woong-Seob Jeong +17

While stellar population synthesis (SPS) models have been widely used for spectral analysis in optical wavelengths, their characteristics remain uncertain in the near-infrared (NIR…

astro-ph.GA2026

A UV-to-Near-infrared QSO Composite Spectrum from the SPHEREx All-Sky Survey

Minjin Kim, Yongjung Kim, Woong-Seob Jeong +19

We present a composite spectrum of type 1 SDSS QSOs (median ), constructed using SPHEREx spectrophotometric data and covering a rest-frame wavelength…

astro-ph.GA2026

The SPHEREx View of Galaxy Clusters: A Simulation-based Validation of the Forced Photometry Pipeline for Extended Sources

Hyeonguk Bahk, Ho Seong Hwang, Lindsey Bleem +12

We present a simulation-driven assessment of the performance of the SPHEREx pipeline for galaxy cluster science, focusing on photometry, source blending, survey depth, and photomet…

astro-ph.GA2026

Galaxy-Galaxy Blending in SPHEREx Survey Data

Kim Dachan, Hyunmi Song, Yigon Kim +8

The Spectro-Photometer for the History of the Universe, Epoch of Reionization and Ices Explorer (SPHEREx) will provide all-sky spectral survey data covering optical to mid-infrared…

astro-ph.GA2025

Resolved Stellar Mass Estimation of Nearby Late-type Galaxies for the SPHEREx Era: Dependence on Stellar Population Synthesis Models

Jeong Hwan Lee, Minjin Kim, Taehyun Kim +7

The upcoming all-sky infrared spectrophotometric SPHEREx mission is set to provide spatially resolved stellar mass maps of nearby galaxies, offering more detailed insights than int…

astro-ph.GA2025

Green peas in the southern sky: Broad-band color selection and spectroscopic follow up

Yejin Jeong, Hyunjin Shim, Eunchong Kim +1

We present a systematic search for 1696 Green Pea (GP) galaxy candidates in the southern hemisphere selected from the Dark Energy Survey Data Release 2 (DES DR2) and provide prelim…

astro-ph.GA2024

Accuracy of Stellar Mass-to-light Ratios of Nearby Galaxies in the Near-Infrared

Taehyun Kim, Minjin Kim, Luis C. Ho +12

Future satellite missions are expected to perform all-sky surveys, thus providing the entire sky near-infrared spectral data and consequently opening a new window to investigate th…