J. H. Kim

activity

20092025

most citedDiscovery of the Onset of Rapid Accretion by a Dormant Massive Black Hole

583 citations · 2.3k across the 42 of their papers we have counts for

collaborators

Showing 2021Show all

3 papers · 1 filter

astro-ph.GA2021★ 25 cited

EMPRESS. VI. Outflows Investigated in Low-Mass Galaxies with $M_{*} = 1 0^{4} - 1 0^{7} M_{⊙}$ : Weak Feedback in Low-Mass Galaxies?

Yi Xu, Masami Ouchi, Michael Rauch +10

We study emission line profiles of 21 nearby low-mass ( $M_{*} = 1 0^{4} - 1 0^{7} M_{⊙}$ ) galaxies in deep medium-high resolution spectra taken with Magellan/MagE. These low-mass galaxies ar…

astro-ph.GA2021★ 47 cited

EMPRESS. IV. Extremely Metal-Poor Galaxies (EMPGs) Including Very Low-Mass Primordial Systems with M*=10^4--10^5 M_sun and 2--3% (O/H)_sun: High (Fe/O) Suggestive of Metal Enrichment by Hypernovae/Pair-Instability Supernovae

Yuki Isobe, Masami Ouchi, Akihiro Suzuki +22

We present Keck/LRIS follow-up spectroscopy for 13 photometric candidates of extremely metal poor galaxies (EMPGs) selected by a machine-learning technique applied to the deep (~26…

astro-ph.SR2021★ 6 cited

Multi-epoch Optical Images of IRC+10216 Tell About the Central Star And the Adjacent Environment

Hyosun Kim, Ho-Gyu Lee, Youichi Ohyama +5

Six images of IRC+10216 taken by the Hubble Space Telescope at three epochs in 2001, 2011, and 2016 are compared in the rest frame of the central carbon star. An accurate astrometr…

EMPRESS. VI. Outflows Investigated in Low-Mass Galaxies with M∗​=104−107 M⊙​: Weak Feedback in Low-Mass Galaxies?

EMPRESS. IV. Extremely Metal-Poor Galaxies (EMPGs) Including Very Low-Mass Primordial Systems with M*=10^4--10^5 M_sun and 2--3% (O/H)_sun: High (Fe/O) Suggestive of Metal Enrichment by Hypernovae/Pair-Instability Supernovae

Multi-epoch Optical Images of IRC+10216 Tell About the Central Star And the Adjacent Environment

EMPRESS. VI. Outflows Investigated in Low-Mass Galaxies with $M_{*} = 1 0^{4} - 1 0^{7} M_{⊙}$ : Weak Feedback in Low-Mass Galaxies?