44 citations · 279 across the 14 of their papers we have counts for
14 papers
Dark matter distribution in Milky Way-analog galaxies
Natanael G. de Isídio, K. Menéndez-Delmestre, T. S. Gonçalves +9
Our current understanding of how dark matter (DM) is distributed within the Milky Way halo, particularly in the solar neighborhood, is based on either careful studies of the local…
HI Vertical Structure of Nearby Edge-on Galaxies from CHANG-ES
Yun Zheng, Jing Wang, Judith Irwin +9
We study the vertical distribution of the highly inclined galaxies from the Continuum Halos in Nearby Galaxies - an EVLA Survey (CHANG-ES). We explore the feasibility of photometri…
CHANG-ES XXV: HI Imaging of Nearby Edge-on Galaxies -- Data Release 4
Yun Zheng, Jing Wang, Judith Irwin +9
We present the HI distribution of galaxies from the Continuum Halos in Nearby Galaxies - an EVLA Survey (CHANG-ES). Though the observational mode was not optimized for detecting HI…
The Bluedisk survey: thickness of HI layers in gas rich spiral galaxies
Toky H. Randriamampandry, Jing Wang, K. Moses Mogotsi
We use an empirical relation to measure the HI scale height of relatively HI rich galaxies using 21-cm observations. The galaxies were selected from the BLUEDISK, THINGS and VIVA s…
Suppressed or enhanced central star formation rates in late-type barred galaxies
Jing Wang, E. Athanassoula, Si-Yue Yu +4
Bars in disc-dominated galaxies are able to drive gas inflow inside the corotation radius, thus enhancing the central star formation rate (SFR). Previous work, however, has found t…
GalactICS with Gas
N. Deg, L. M. Widrow, T. Randriamampandry +1
We present a new version of the GalactICS code that can generate self-consistent equilibrium galaxy models with a two-component stellar disc and a gas disc as well as a centrally-c…
Simulating non-axisymmetric flows in disc galaxies
T. H. Randriamampandry, N. Deg, C. Carignan +1
We present a two-step method to simulate and study non-circular motions in strongly barred galaxies. The first step is to constrain the initial parameters using a Bayesian analysis…
Exploring the GalMer database: bar properties and non-circular motions
T. H. Randriamampandry, N. Deg, C. Carignan +2
We use Tree-SPH simulations from the GalMer database by Chilingarian et al. to characterize and quantify the non-circular motions induced by the presence of bar-like structures on…
Neutral hydrogen and magnetic fields in M83 observed with the SKA Pathfinder KAT-7
G. Heald, W. J. G. de Blok, D. Lucero +6
We present new KAT-7 observations of the neutral hydrogen (HI) spectral line, and polarized radio continuum emission, in the grand design spiral M83. These observations provide a s…
HI Observations of two New Dwarf Galaxies: Pisces A & B with the SKA Pathfinder KAT-7
C. Carignan, Y. Libert, D. M. Lucero +4
Context. Pisces A & Pisces B are the only two galaxies found via optical imaging and spectroscopy out of 22 HI clouds identified in the GALFAHI survey as dwarf galaxy candidates. A…
Estimating non-circular motions in barred galaxies using numerical N-body simulations
Toky Randriamampandry, Francoise Combes, Claude Carignan +1
The observed velocities of the gas in barred galaxies are a combination of the azimuthally-averaged circular velocity and non-circular motions, primarily caused by gas streaming al…
HI observations of the nearest starburst galaxy NGC 253 with the SKA precursor KAT-7
D. M. Lucero, C. Carignan, E. C. Elson +4
We present HI observations of the Sculptor Group starburst spiral galaxy NGC 253, obtained with the Karoo Array Telescope (KAT-7). KAT-7 is a pathfinder for the SKA precursor MeerK…
Galaxy Mass Models: MOND versus Dark Matter Halos
Toky Randriamampandry, Claude Carignan
Mass models of 15 nearby dwarf and spiral galaxies are presented. The galaxies are selected to be homogeneous in terms of the method used to determine their distances, the sampling…
KAT-7 Science Verification: Using HI Observations of NGC 3109 to Understand its Kinematics and Mass Distribution
C. Carignan, B. S. Frank, K. M. Hess +4
HI observations of the Magellanic-type spiral NGC 3109, obtained with the seven dish Karoo Array Telescope (KAT-7), are used to analyze its mass distribution. Our results are compa…