27 citations · 92 across the 7 of their papers we have counts for
10 papers
A Comparative Study of the Supernova Remnant Cassiopeia A from 2013--2020 Deep [Fe II]+[Si I] Images
Seung-Hoon Jung, Bon-Chul Koo, Yong-Hyun Lee +2
We present a comparative analysis of supernova remnant Cassiopeia A based on two deep, narrow-band images covering the [Fe II] 1.644um + [Si I] 1.645um lines obtained in 2013 and 2…
Extended Ionized Fe Objects in the UWIFE Survey
Kim Yesol, Koo Bon-Chul, Pyo Tae-Soo +7
We explore systematically the shocked gas in the first Galactic quadrant of the Milky Way using the United Kingdom Infrared Telescope (UKIRT) Wide-field Infrared Survey for Fe+ (UW…
Near-infrared [P II] and [Fe II] line mapping of Galactic supernova remnants
Takuma Kokusho, Yuki Katsurada, Yong-Hyun Lee +7
Phosphorus (P) is one of the key ingredients for life, yet its origins in galaxies remain poorly understood. In order to investigate the production of P by supernovae, we performed…
Near-Infrared Spectroscopy of Dense Ejecta Knots in the Outer Eastern Area of the Cassiopeia A Supernova Remnant
Bon-Chul Koo, Yong-Hyun Lee, Jae-Joon Lee +1
The Cassiopeia A supernova remnant has a complex structure, manifesting the multidimensional nature of core-collapse supernova explosions. To further understand this, we carried ou…
High-resolution Near-infrared Spectroscopic Study of Galactic Supernova Remnants. I. Kinematic Distances
Yong-Hyun Lee, Bon-Chul Koo, Jae-Joon Lee
We have carried out high-resolution near-infrared spectroscopic observations toward 16 Galactic supernova remnants (SNRs) showing strong H emission features. A dozen bright H…
Detection of Pristine Circumstellar Material of the Cassiopeia A Supernova
Bon-Chul Koo, Hyun-Jeong Kim, Heeyoung Oh +4
Cassiopeia A is a nearby young supernova remnant that provides a unique laboratory for the study of core-collapse supernova explosions. Cassiopeia A is known to be a Type IIb super…