activity
20102026
most citedRest-frame Optical Spectra and Black Hole Masses of 3<z<6 Quasars

74 citations · 516 across the 45 of their papers we have counts for

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Showing 2026Show all

10 papers · 1 filter

astro-ph.IM2026

3.5-meter Segmented-Mirror Robotic Space Telescope Mission White Paper I. Overall Architecture and Scientific Mission

Yong-Woo Kang, Sang Hyun Lee, Juhan Kim +22

We present the preliminary science concept and mission architecture of a 3.5-meter segmented-mirror robotic space telescope currently under study. The observatory is conceived as a…

astro-ph.IM2026

3.5-meter Segmented-Mirror Robotic Space Telescope Mission White Paper V. Key Scientific Mission: Compact-Object Time-Domain Science

Juhan Kim, Yong-Woo Kang, Sang Hyun Lee +22

An isolated compact object retains the point-source resolving power of the space-based slitless spectrograph. The baseline wavelength range is 0.2--1.5 m. The planning baseline…

astro-ph.IM2026

3.5-meter Segmented-Mirror Robotic Space Telescope Mission White Paper IV. Key Scientific Mission: Solar-System Small Bodies and Planetary Defense

Juhan Kim, Yong-Woo Kang, Sang Hyun Lee +22

The baseline 0.2--1.5 m observatory provides rapid-response astrometry, visible and near-infrared taxonomy, rotation and phase curves, recovery, and long-arc orbit improvement f…

astro-ph.IM2026

3.5-meter Segmented-Mirror Robotic Space Telescope Mission White Paper III. Key Scientific Mission: Exoplanet Science with a Coronagraph

Juhan Kim, Sang Hyun Lee, Yong-Woo Kang +22

This volume defines the exoplanet science program enabled by the dedicated high-contrast coronagraph in the baseline science payload of the 3.5-meter Segmented-Mirror Robotic Space…

astro-ph.IM2026

3.5-meter Segmented-Mirror Robotic Space Telescope Mission White Paper II. Key Scientific Mission: Wide-Field Cosmology and Galaxy Evolution

Juhan Kim, Yong-Woo Kang, Sang Hyun Lee +22

The 3.5-meter Segmented-Mirror Robotic Space Telescope uses an image slicer for all spectroscopic observations. The planning baseline uses for the wide survey and r…

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

Only obscured yet luminous active galactic nuclei are closely associated with galaxy mergers: Direct observational evidence from type 2 active galactic nuclei

Yongmin Yoon, Yongjung Kim, Dohyeong Kim +2

To establish a more comprehensive understanding of the connection between galaxy mergers and active galactic nuclei (AGNs), it is essential to disentangle the contributions of intr…

astro-ph.GA2026

The Changing-look Phenomenon Accompanied by an Accretion Mode Transition in NGC 3786

Suyeon Son, Minjin Kim, Luis C. Ho +2

To reveal the physical origin of the changing-look (CL) phenomenon in NGC 3786, which transitioned from type 1.8/1.9 to type 1, we present an analysis of long-term spectral monitor…

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…