640 citations · 2.6k across the 27 of their papers we have counts for
28 papers
AVID: Formation and evolution of a coalesced major merger of late-type dwarf galaxies (VCC 479) on the outskirts of the Virgo cluster
Weibin Sun, Hong-Xin Zhang, Rory Smith +24
Dwarf-dwarf galaxy mergers are among the least explored aspects of dwarf galaxy pre-processing as they fall into clusters. We present the first case study of a coalesced late-type…
WALLABY Pilot Survey: Hydra Cluster Galaxies UV and HI morphometrics
Benne W. Holwerda, Frank Bigiel, Albert Bosma +16
Galaxy morphology in atomic hydrogen (HI) and in the ultra-violet (UV) are closely linked. This has motivated their combined use to quantify morphology over the full H i disk for b…
WALLABY Pilot Survey: HI gas kinematics of galaxy pairs in cluster environment
Shin-Jeong Kim, Se-Heon Oh, Jing Wang +22
We examine the HI gas kinematics of galaxy pairs in two clusters and a group using Australian Square Kilometre Array Pathfinder (ASKAP) WALLABY pilot survey observations. We compar…
Global HI Properties of Galaxies via Super-profile Analysis
Minsu Kim, Se-Heon Oh
We present a new method which constructs an HI super-profile of a galaxy which is based on profile decomposition analysis. The decomposed velocity profiles of an HI data cube with…
Gas dynamics and star formation in NGC 6822
Hye-Jin Park, Se-Heon Oh, Jing Wang +3
We present H I gas kinematics and star formation activities of NGC 6822, a dwarf galaxy located in the Local Group at a distance of ~ 490 kpc. We perform profile decomposition of l…
LADUMA: Discovery of a luminous OH megamaser at
Marcin Glowacki, Jordan D. Collier, Amir Kazemi-Moridani +65
In the local Universe, OH megamasers (OHMs) are detected almost exclusively in infrared-luminous galaxies, with a prevalence that increases with IR luminosity, suggesting that they…
Relationships between the Stellar, Gaseous, and Star Formation Disks in LITTLE THINGS Dwarf Irregular Galaxies: Indirect Evidence for Substantial Fractions of Dark Molecular Gas
Deidre A. Hunter, Bruce G. Elmegreen, Esther Goldberger +7
The stellar, gaseous and young stellar disks in the LITTLE THINGS sample of nearby dIrrs are fitted with functions to search for correlations between the parameters. We find that t…
The Blue Compact Dwarf Galaxy VCC 848 Formed by Dwarf-Dwarf Merging: HI Gas, Star Formation and Numerical Simulations
Hong-Xin Zhang, Rory Smith, Se-Heon Oh +12
A clear link between a dwarf-dwarf merger event and enhanced star formation (SF) in the recent past was recently identified in the gas-dominated merger remnant VCC 848, offering by…
The Blue Compact Dwarf Galaxy VCC848 Formed by Dwarf-Dwarf Merging
Hong-Xin Zhang, Sanjaya Paudel, Rory Smith +8
It has long been speculated that many starburst or compact dwarf galaxies are resulted from dwarf-dwarf galaxy merging, but unequivocal evidence for this possibility has rarely bee…
Gas engaged in noncircular motions in LITTLE THINGS dwarf irregular galaxies
Deidre A. Hunter, Lauren Laufman, Se-Heon Oh +2
We have examined gas engaged in noncircular motions in 22 of the nearby LITTLE THINGS dwarf irregular galaxies. The HI data cubes have been deconvolved into kinematic components -…
Robust profile decomposition for large extragalactic spectral-line surveys
Se-Heon Oh, Lister Staveley-Smith, Bi-Qing For
We present a novel algorithm that is based on a Bayesian Markov Chain Monte Carlo (MCMC) technique for performing robust profile analysis of a data cube from either single-dish or…
The Local Volume HI Survey (LVHIS)
Bärbel S. Koribalski, Jing Wang, Peter Kamphuis +8
The `Local Volume HI Survey' (LVHIS) comprises deep HI spectral line and 20-cm radio continuum observations of 82 nearby, gas-rich galaxies, supplemented by multi-wavelength images…
JINGLE, a JCMT legacy survey of dust and gas for galaxy evolution studies: I. Survey overview and first results
Amelie Saintonge, Christine D. Wilson, Ting Xiao +88
JINGLE is a new JCMT legacy survey designed to systematically study the cold interstellar medium of galaxies in the local Universe. As part of the survey we perform 850um continuum…
An HI study of the collisional ring galaxy NGC 922
Ahmed Elagali, O. Ivy Wong, Se-Heon Oh +4
We present new atomic hydrogen (HI) observations of the collisional ring galaxy NGC 922 obtained using the Australia Telescope Compact Array. Our observations reveal for the first…
A study of two dwarf irregular galaxies with asymmetrical star formation distributions
Deidre A. Hunter, Samavarti Gallardo, Hong-Xin Zhang +23
Two dwarf irregular galaxies DDO 187 and NGC 3738 exhibit a striking pattern of star formation: intense star formation is taking place in a large region occupying roughly half of t…
2D Bayesian automated tilted-ring fitting of disk galaxies in large HI galaxy surveys: 2DBAT
Se-Heon Oh, Lister Staveley-Smith, Kristine Spekkens +2
We present a novel algorithm based on a Bayesian method for 2D tilted-ring analysis of disk galaxy velocity fields. Compared to the conventional algorithms based on a chi-squared m…
Angular Momentum of Dwarf Galaxies
Kirsty M. Butler, Danail Obreschkow, Se-Heon Oh
We present measurements of baryonic mass Mb and specific angular momentum (sAM) jb in 14 rotating dwarf Irregular (dIrr) galaxies from the LITTLE THINGS sample. These measurements,…
Blasting away a dwarf galaxy: The "tail" of ESO 324-G024
Megan C. Johnson, Peter Kamphuis, Baerbel S. Koribalski +6
We present Australia Telescope Compact Array radio data of the dwarf irregular galaxy ESO 324-G024 which is seen in projection against the giant, northern lobe of the radio galaxy…
The Shape of LITTLE THINGS Dwarf Galaxies DDO 46 and DDO 168: Understanding the stellar and gas kinematics
Megan C. Johnson, Deidre A. Hunter, Sarah Wood +4
We present the stellar and gas kinematics of DDO 46 and DDO 168 from the LITTLE THINGS survey and determine their respective Vmax/sigma_z,0 values. We used the KPNO's 4-meter teles…
High-resolution mass models of dwarf galaxies from LITTLE THINGS
Se-Heon Oh, Deidre A. Hunter, Elias Brinks +13
We present high-resolution rotation curves and mass models of 26 dwarf galaxies from LITTLE THINGS. LITTLE THINGS is a high-resolution Very Large Array HI survey for nearby dwarf g…
Structure and Kinematics of the Nearby Dwarf Galaxy UGCA 105
Philip Schmidt, Gyula Jozsa, Gianfranco Gentile +5
Owing to their shallow stellar potential, dwarf galaxies possess thick gas disks, which makes them good candidates for studies of the galactic vertical kinematical structure. We pr…
The Stellar and Gas Kinematics of the LITTLE THINGS Dwarf Irregular Galaxy NGC 1569
Megan Johnson, Deidre A. Hunter, Se-Heon Oh +5
In order to understand the formation and evolution of dIm galaxies, one needs to understand their three-dimensional structure. We present measurements of the stellar velocity dispe…
Isolated and non-isolated dwarfs in terms of modified Newtonian dynamics
G. Gentile, G. W. Angus, B. Famaey +2
Within the framework of modified Newtonian dynamics (MOND) we investigate the kinematics of two dwarf spiral galaxies belonging to very different environments, namely KK 246 in the…
Cuspy No More: How Outflows Affect the Central Dark Matter and Baryon Distribution in Lambda CDM Galaxies
F. Governato, A. Zolotov, A. Pontzen +6
We examine the evolution of the inner dark matter (DM) and baryonic density profile of a new sample of simulated field galaxies using fully cosmological, Lambda CDM, high resolutio…