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Browsing by Author "Carignan, Claude"

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Analysis of SALT Fabry-Pérot medium resolution data

Author: Tapsoba, Wendyam Blaise Date: 2015 The Southern African Large Telescope Fabry-Pérot interferometer has been used in its medium resolution mode to observe three of 30 galaxies of the MHONGOOSE galaxy sample for which very deep HI observation (typically 200 hours/galaxy) will ... Read more
Correcting the rotation curve of spiral galaxies for the non-circular motions induced by a bar

Author: Randriamampandry, Toky Herimandimby Date: 2017 The mass distribution of disk galaxies is usually determined through the use of rotation curves. This determination relies on two key assumptions; that the gas moves on circular orbits and that this motion traces the underlying gravitational ... Read more
Deep HI observations of nearby late-type galaxies

Author: Sorgho, Amidou Date: 2019 This thesis makes use of sensitive Hi observations to map the distribution and kinematics of the low column density neutral hydrogen in late-type nearby mostly isolated galaxies and in the nearby M81 group. Using the KAT-7, GBT and MeerKAT ... Read more
Deep HI observations of nearby late-type galaxies

Author: Sorgho, Amidou Date: 2019 This thesis makes use of sensitive Hi observations to map the distribution and kinematics of the low column density neutral hydrogen in late-type nearby mostly isolated galaxies and in the nearby M81 group. Using the KAT-7, GBT and MeerKAT ... Read more
Distribution of baryonic and dark matter in spiral and irregular nearby galaxies

Author: Korsaga, Marie Date: 2019 My PhD research is focused on the dark matter (DM) and luminous matter distribution in spiral and irregular galaxies. Studying this matter could clearly improve our knowledge on the formation and evolution of galaxies. While the overall ... Read more
HI in group interactions: HCG 44

Author: Hess, Kelley M ; Cluver, M E ; Yahya, Sahba ; Leisman, Lukas ; Serra, Paolo ; Lucero, Danielle M ; Passmoor, Sean S ; Carignan, Claude Date: 2017 Extending deep observations of the neutral atomic hydrogen (H I) to the environment around galaxy groups can reveal a complex history of group interactions which is invisible to studies that focus on the stellar component. Hickson Compact ... Read more
HI survey of local group dwarf galaxies

Author: Namumba, Brenda Date: 2019 This thesis investigates the HI properties of 3 dwarf irregular galaxies and one blue compact dwarf galaxy of the Local Group. The data set of each dwarf irregular galaxy was obtained with the Karoo Array Telescope (KAT-7) while the blue ... Read more
Observing galaxies in the Southern Filament of the Virgo Cluster with KAT-7 and WSRT

Author: Sorgho, Amidou Date: 2015 To date, our understanding of the formation and evolution of galaxies attributes a very important role to the neutral hydrogen (HI) gas since it constitutes the reservoir of fuel out of which galaxies form stars. In their evolution, galaxies ... Read more
The star formation and dynamics of nearby galaxies

Author: Mogotsi, Keoikantse Moses Date: 2016 A scaling relation between the surface density of star formation and gas in the disks of galaxies has become the basis of our understanding of extragalactic star formation on scales of hundreds of parsecs and larger. This is an empirical law ... Read more

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Browsing by Author "Carignan, Claude"

Browsing by Author "Carignan, Claude"

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