681 citations · 1.2k across the 26 of their papers we have counts for
26 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…
Characterization of the commercial spectrograph system for astronomical observations: PIXIS 1300BX Camera and IsoPlane 320A Spectrograph
Jiwon Jang, Changsu Choi, Ho Seong Hwang +4
We present the result from a comprehensive laboratory and on-sky characterization of the commercial spectrograph system consisting of a PIXIS 1300BX charge-coupled device (CCD) cam…
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…
Diverse Rotation Curves of Galaxies in a Simulated Universe: the Observed Dependence on Stellar Mass and Morphology Reproduced
Daeun Jeong, Ho Seong Hwang, Haeun Chung +1
We use the IllustrisTNG cosmological hydrodynamical simulation to study the rotation curves of galaxies in the local universe. To do that, we first select the galaxies with 9.4 …
Shell-type Tidal Features Are More Frequently Detected in Slowly Rotating Early-type Galaxies than Stream- and Tail-type Features
Yongmin Yoon, Jongwan Ko, Haeun Chung +2
To enhance our understanding of the impact of galaxy mergers on the kinematics of early-type galaxies (ETGs), we examine differences in specific stellar angular momentum within the…
Circumgalactic Ly Nebulae in Overdense Quasar Pair Regions Observed with the Palomar Cosmic Web Imager
Jessica S. Li, Carlos J. Vargas, Donal O'Sullivan +8
The recent discovery of enormous Ly nebulae (ELANe), characterized by physical extents kpc and Ly luminosities erg s, provide a unique opportunity to…
Hyperion: The origin of the stars A far-UV space telescope for high-resolution spectroscopy over wide fields
Erika Hamden, David Schiminovich, Shouleh Nikzad +30
We present Hyperion, a mission concept recently proposed to the December 2021 NASA Medium Explorer announcement of opportunity. Hyperion explores the formation and destruction of m…
FIREBall-2: flight preparation of a proven balloon payload to image the intermediate redshift circumgalactic medium
Vincent Picouet, David Valls-Gabaud, Bruno Milliard +19
FIREBall-2 is a stratospheric balloon-borne 1-m telescope coupled to a UV multi-object slit spectrograph designed to map the faint UV emission surrounding z~0.7 galaxies and quasar…
The Seventeenth Data Release of the Sloan Digital Sky Surveys: Complete Release of MaNGA, MaStar and APOGEE-2 Data
Abdurro'uf, Katherine Accetta, Conny Aerts +337
This paper documents the seventeenth data release (DR17) from the Sloan Digital Sky Surveys; the fifth and final release from the fourth phase (SDSS-IV). DR17 contains the complete…
Evidence for Impact of Galaxy Mergers on Stellar Kinematics of Early-type Galaxies
Yongmin Yoon, Changbom Park, Haeun Chung +1
We provide observational evidence that galaxy mergers significantly affect stellar kinematics of early-type galaxies (ETGs) such as specific stellar angular momentum within the hal…
Properties of Fast and Slow Bars Classified by Epicyclic Frequency Curves from Photometry of Barred Galaxies
Yun Hee Lee, Myeong-Gu Park, Ho Seong Hwang +3
We test the idea that bar pattern speeds decrease with time owing to angular momentum exchange with a dark matter halo. If this process actually occurs, then the locations of the c…
Rotation Curves of Galaxies and Their Dependence on Morphology and Stellar Mass
Yongmin Yoon, Changbom Park, Haeun Chung +1
We study how stellar rotation curves (RCs) of galaxies are correlated on average with morphology and stellar mass () using the final release of Sloan Digital Sky S…
A novel approach for calculating galaxy rotation curves using spaxel cross-correlation and iterative smoothing
Satadru Bag, Arman Shafieloo, Rory Smith +5
Precise measurements of the internal dynamics of galaxies have proven of great importance for understanding the internal dark matter distribution of galaxies. We present a novel me…
Evolution of the spin of late-type galaxies caused by galaxy-galaxy interactions
Jeong-Sun Hwang, Changbom Park, Soo-hyeon Nam +1
We use N-body/hydrodynamic simulations to study the evolution of the spin of a Milky Way-like galaxy through interactions. We perform a controlled experiment of co-planner galaxy-g…
Revisiting FUSE O VI Emission in Galaxy Halos
Haeun Chung, Carlos J. Vargas, Erika Hamden
A significant fraction of baryons in galaxies are in the form of diffuse gas of the circumgalactic medium (CGM). One critical component of the multi-phases of CGM, the so-called "c…
PSF Deconvolution of the IFU Data and Restoration of Galaxy Stellar Kinematics
Haeun Chung, Changbom Park, Yong-Sun Park
We present a performance test of the Point Spread Function deconvolution algorithm applied to astronomical Integral Field Unit (IFU) Spectroscopy data for restoration of galaxy kin…
The Fifteenth Data Release of the Sloan Digital Sky Surveys: First Release of MaNGA Derived Quantities, Data Visualization Tools and Stellar Library
D. S. Aguado, Romina Ahumada, Andres Almeida +230
Twenty years have passed since first light for the Sloan Digital Sky Survey (SDSS). Here, we release data taken by the fourth phase of SDSS (SDSS-IV) across its first three years o…
DOTIFS: fore-optics and calibration unit design
Haeun Chung, A. N. Ramaprakash, Pravin Khodade +5
We present fore-optics and calibration unit design of Devasthal Optical Telescope Integral Field Spectrograph (DOTIFS). DOTIFS fore-optics is designed to modify the focal ratio of…
DOTIFS: spectrograph optical and opto-mechanical design
Haeun Chung, A. N. Ramaprakash, Pravin Khodade +10
Devasthal Optical Telescope Integral Field Spectrograph (DOTIFS) is a new multi-Integral Field Unit (IFU) instrument, planned to be mounted on the 3.6m Devasthal optical telescope…
DOTIFS: a new multi-IFU optical spectrograph for the 3.6-m Devasthal optical telescope
Haeun Chung, A. N. Ramaprakash, Amitesh Omar +4
Devasthal Optical Telescope Integral Field Spectrograph (DOTIFS) is a new multi-object Integral Field Spectrograph (IFS) being designed and fabricated by the Inter-University Cente…
Noise Characterization of IUCAA Digital Sampling Array Controller (IDSAC)
Sabyasachi Chattopadhyay, A. N. Ramaprakash, Bhushan Joshi +11
IUCAA Digital Sampling Array Controller (IDSAC) is a flexible and generic yet powerful CCD controller which can handle a wide range of scientific detectors. Based on an easily scal…
Multiple rooks of chess - a generic integral field unit deployment technique
Sabyasachi Chattopadhyay, A. N. Ramaprakash, Pravin Khodade +4
A new field re-configuration technique, Multiple Rooks of Chess (MRC), for multiple deployable Integral Field Spectrographs has been developed. The method involves mechanical geome…
A new photolithography based technique to mass produce microlens+fibre based integralfield units (IFUs) for 2D spectroscopy
Sabyasachi Chattopadhyay, Vishal Joshi, A. N. Ramaprakash +3
We present a novel photolithography based technique to efficiently fabricate microlens-fibre based Integral Field Units (IFUs). These IFUs are being developed for Devasthal Optical…
Star formation activity of barred spiral galaxies
Eunbin Kim, Ho Seong Hwang, Haeun Chung +4
We study the star formation activity of nearby galaxies with bars using a sample of late-type galaxies at 0.02 0.05489 and from the Sloan Digital Sky Surv…