65 citations · 341 across the 25 of their papers we have counts for
25 papers
Constructing a Mock Galaxy Catalog for the All-sky SPECtroscopic Survey of Nearby Galaxies (A-SPEC) Using the Machine-assisted Semi-Simulation Model
Dongkok Kim, Yongseok Jo, Ho Seong Hwang +26
We present a methodology for constructing a mock galaxy catalog for the All-sky SPECtroscopic survey of nearby galaxies (A-SPEC) using the Machine-assisted Semi-Simulation Model. T…
SQUIDPOL: Seoul National University QUadruple Imaging Device for POLarimetry
Sunho Jin, Jooyeon Geem, Masateru Ishiguro +9
We present SQUIDPOL, a low-cost, multi-channel optical imaging polarimeter that performs simultaneous linear polarization measurements using a rotating half-wave plate, a non-polar…
A New Collision Avoidance Fiber Assignment Algorithm for Robotic Fiber Positioners in Multi-Object Spectroscopy
Minseong Kwon, Ho Seong Hwang, Jong Chul Lee +22
We present a new fiber assignment algorithm for a robotic fiber positioner system in multi-object spectroscopy. Modern fiber positioner systems typically have overlapping patrol re…
Near-Infrared Spectroscopy with IGRINS-2 for Studying Multiple Stellar Populations in Globular Clusters
Dongwook Lim, Young-Wook Lee, Sol Yun +53
Recent advancements in near-infrared (NIR) spectroscopy have opened new opportunities for studying multiple stellar populations in globular clusters (GCs), particularly for newly d…
10 Years of Archival High-Resolution NIR Spectra: The Raw and Reduced IGRINS Spectral Archive (RRISA)
Erica Sawczynec, Kyle F. Kaplan, Gregory N. Mace +20
The Immersion GRating INfrared Spectrometer (IGRINS) is a compact, high-resolution (R~45,000) near-infrared spectrograph spanning 1.45 to 2.45 um in a single exposure. We introduce…
An Early Look at the Performance of IGRINS-2 at Gemini-North with Application to the ultrahot Jupiter, WASP-33 b
Yeon-Ho Choi, Ueejeong Jeong, Jae-Joon Lee +56
Ground-based high-resolution spectroscopy enables precise molecular detections and velocity-resolved atmospheric dynamics, offering a distinct advantage over low-resolution methods…
Is the RSGC4 (Alicante 8) cluster a real star cluster?: Peculiar radial velocities of red supergiant stars
Sang-Hyun Chun, GyuChul Myeong, Jae-Joon Lee +1
Young massive star clusters, like the six red supergiant clusters in the Scutum complex, provide valuable insights into star-formation and galaxy structures. We investigated the hi…
The IGRINS YSO Survey III: Stellar parameters of pre-main sequence stars in Ophiuchus and Upper Scorpius
Ricardo López-Valdivia, Gregory N. Mace, Eunkyu Han +9
We used the Immersion GRating Infrared Spectrometer (IGRINS) to determine fundamental parameters for 61 K- and M-type young stellar objects (YSOs) located in the Ophiuchus and Uppe…
Red supergiant stars in IC 1613 and metallicity-dependent mixing length in the evolutionary model
Sang-Hyun Chun, Sung-Chul Yoon, Heeyoung Oh +2
We report a spectroscopic study on red supergiant stars (RSGs) in the irregular dwarf galaxy IC 1613 in the Local Group. We derive the effective temperatures () and…
The IGRINS YSO Survey I. Stellar parameters of pre-main sequence stars in Taurus-Auriga
Ricardo López-Valdivia, Kimberly R. Sokal, Gregory N. Mace +19
We present fundamental parameters for 110 canonical K- & M-type (1.30.13) Taurus-Auriga young stellar objects (YSOs). The analysis produces a simultaneous determination…
High-resolution Near-infrared Spectroscopy of Diffuse Sources around MWC 1080
Il-Joong Kim, Heeyoung Oh, Woong-Seob Jeong +3
To reveal the origins of diffuse H-alpha emissions observed around the Herbig star MWC 1080, we have performed a high-resolution near-infrared (NIR) spectroscopic observation using…
IGRINS RV: A Precision RV Pipeline for IGRINS Using Modified Forward Modeling in the Near-Infrared
Asa G. Stahl, Shih-Yun Tang, Christopher M. Johns-Krull +7
Application of the radial velocity (RV) technique in the near infrared is valuable because of the diminished impact of stellar activity at longer wavelengths, making it particularl…
Fluorine in the solar neighbourhood: the need for several cosmic sources
Nils Ryde, Henrik Jönsson, Gregory Mace +14
The cosmic origin of fluorine is still not well constrained. Several nucleosynthetic channels at different phases of stellar evolution have been suggested, but these must be constr…
IGRINS Slit-Viewing Camera Software
Hye-In Lee, Soojong Pak, Gregory N. Mace +5
We have developed observation control software for the Immersion GRating INfrared Spectrometer (IGRINS) slit-viewing camera module, which maintains the position of an astronomical…
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…
Effective Temperatures of Low-Mass Stars from High-Resolution H-band Spectroscopy
Ricardo López-Valdivia, Gregory N. Mace, Kimberly R. Sokal +9
High-resolution, near-infrared spectra will be the primary tool for finding and characterizing Earth-like planets around low-mass stars. Yet, the properties of exoplanets can not b…
High-resolution near-IR Spectral mapping with H and [Fe II] lines of Multiple Outflows around LkH 234
Heeyoung Oh, Tae-Soo Pyo, Bon-Chul Koo +11
We present a high-resolution, near-IR spectroscopic study of multiple outflows in the LkH 234 star formation region using the Immersion GRating INfrared Spectrometer (IGRINS). S…
Kinematic evidence for feedback-driven star formation in NGC 1893
Beomdu Lim, Hwankyung Sung, Michael S. Bessell +8
OB associations are the prevailing star forming sites in the Galaxy. Up to now, the process of how OB associations were formed remained a mystery. A possible process is self-regula…
Characterizing TW Hydra
Kimberly R. Sokal, Casey P. Deen, Gregory N. Mace +5
At 60 pc, TW Hydra (TW Hya) is the closest example of a star with a gas-rich protoplanetary disk, though TW Hya may be relatively old (3-15 Myr). As such, TW Hya is especially appe…
Inner warm disk of ESO H 279A revealed by NA I and CO overtone emission lines
A-Ran Lyo, Jongsoo Kim, Jae-Joon Lee +20
We present analysis of near-infrared, high-resolution spectroscopy towards the Flat-spectrum YSO (Young Stellar Object) ESO H 279a (1.5 solar mass) in the Serpens star forming r…
Excitation of Molecular Hydrogen in the Orion Bar Photodissociation Region From a Deep Near-Infrared IGRINS Spectrum
Kyle F. Kaplan, Harriet L. Dinerstein, Heeyoung Oh +9
We present a deep near-infrared spectrum of the Orion Bar Photodissociation Region (PDR) taken with the Immersion Grating INfrared Spectrometer (IGRINS) on the 2.7 m telescope at t…
Three-dimensional Shock Structure of Orion KL Outflow with IGRINS
Heeyoung Oh, Tae-Soo Pyo, Kyle F. Kaplan +17
We report a study of the three-dimensional (3D) outflow structure of a 15$\arcsec$ 13$\arcsec$ area around H peak 1 in Orion KL with slit-scan observations (13 slits…
Fluorescent H_2 Emission Lines from the Reflection Nebula NGC 7023 Observed with IGRINS
Huynh Anh N. Le, Soojong Pak, Kyle F. Kaplan +17
We have analyzed the temperature, velocity and density of H2 gas in NGC 7023 with a high-resolution near-infrared spectrum of the northwestern filament of the reflection nebula. By…
IGRINS Near-IR High-Resolution Spectroscopy of Multiple Jets around LkH 234
Heeyoung Oh, Tae-Soo Pyo, In-Soo Yuk +18
We present the results of high-resolution near-IR spectroscopy toward the multiple outflows around the Herbig Be star Lk{\Ha} 234 using the Immersion Grating Infrared Spectrograph…