49 citations · 141 across the 14 of their papers we have counts for
14 papers · 1 filter
Active galactic nucleus activity in nearby disk galaxies: The roles of bar strength and spiral arm morphology
Zh. R. Martirosyan, A. A. Hakobyan, V. Adibekyan +3
(abridged) We investigate the dependence of AGN activity on bar strength and spiral arm morphology in nearby spiral galaxies, with a particular emphasis on disentangling their indi…
Supernovae Ia ejecta velocities and host galaxy environments: the role of survey-selection effects
L. V. Barkhudaryan, A. A. Hakobyan, M. H. Gevorgyan +6
The origin of the near-maximum-light Si II 6355 velocity diversity among supernovae Ia (SNe Ia) remains uncertain. Previous studies have suggested that high-velocity (HV) and no…
Calcium versus silicon ejecta velocities and decline rates in supernovae Ia: The role of high-velocity features
A. A. Hakobyan, M. H. Gevorgyan, A. G. Karapetyan +4
Photospheric and high-velocity features (PVFs and HVFs) of Si II 6355 and Ca II IR3 lines in supernova Ia (SN Ia) spectra provide insights into ejecta structure, energetics, and…
Constraining Supernova Ia Progenitors by their Locations in Host Galactic Disc
A. A. Hakobyan, A. G. Karapetyan, L. V. Barkhudaryan
Among the diverse progenitor channels leading to Type Ia Supernovae (SNe Ia), there are explosions originating from white dwarfs with sub-Chandrasekhar masses. These white dwarfs u…
Type Ia supernovae in the star formation deserts of spiral host galaxies
A. A. Hakobyan, A. G. Karapetyan, L. V. Barkhudaryan +2
Using a sample of nearby spiral galaxies hosting 185 supernovae (SNe) Ia, we perform a comparative analysis of the locations and light curve decline rates of normal and…
Supernovae and their host galaxies -- VII. The diversity of Type Ia supernova progenitors
A. A. Hakobyan, L. V. Barkhudaryan, A. G. Karapetyan +5
We present an analysis of the light curve (LC) decline rates of 407 normal and peculiar supernovae (SNe) Ia and global parameters of their host galaxies. As previously…
Supernovae and their host galaxies -- VI. Normal Type Ia and 91bg-like supernovae in ellipticals
L. V. Barkhudaryan, A. A. Hakobyan, A. G. Karapetyan +4
We present an analysis of the galactocentric distributions of the "normal" and peculiar "91bg-like" subclasses of 109 supernovae (SNe) Ia, and study the global parameters of their…
The impact of spiral density waves on the star formation distribution: a view from core-collapse supernovae
A. G. Karapetyan, A. A. Hakobyan, L. V. Barkhudaryan +4
We present an analysis of the impact of spiral density waves (DWs) on the radial and surface density distributions of core-collapse (CC) supernovae (SNe) in host galaxies with diff…
The impact of spiral density waves on the distribution of Supernovae
A. G. Karapetyan, A. A. Hakobyan, L. V. Barkhudaryan +4
We present an analysis of the impact of spiral density waves (DWs) on the radial and surface density distributions of supernovae (SNe) in host galaxies with different arm classes.…
Supernovae and their host galaxies - V. The vertical distribution of supernovae in disc galaxies
A. A. Hakobyan, L. V. Barkhudaryan, A. G. Karapetyan +6
We present an analysis of the height distributions of the different types of supernovae (SNe) from the plane of their host galaxies. We use a well-defined sample of 102 nearby SNe…
Supernovae Distribution and Host Galaxy Properties
A. A. Hakobyan, A. G. Karapetyan, L. V. Barkhudaryan +6
We present the summary of our last results on the spatial distribution and relative frequencies of Supernovae (SNe) in a large number of host galaxies from the Sloan Digital Sky Su…
The Impact of Bulges on the Radial Distribution of Supernovae in Disc Galaxies
A. A. Hakobyan, A. G. Karapetyan, L. V. Barkhudaryan +6
We present the results of the analysis of the impact of bulges on the radial distributions of the different types of supernovae (SNe) in the stellar discs of host galaxies with var…
The impact of bars on the radial distribution of supernovae in disc galaxies
A. A. Hakobyan, A. G. Karapetyan, L. V. Barkhudaryan +6
We present an analysis of the impact of bars on the radial distributions of the different types of supernovae (SNe) in the stellar discs of host galaxies with various morphologies.…
Supernovae and their host galaxies - III. The impact of bars and bulges on the radial distribution of supernovae in disc galaxies
A. A. Hakobyan, A. G. Karapetyan, L. V. Barkhudaryan +6
We present an analysis of the impact of bars and bulges on the radial distributions of the different types of supernovae (SNe) in the stellar discs of host galaxies with various mo…