32 citations · 41 across the 5 of their papers we have counts for
6 papers
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…
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…
New powerful outburst of the unusual young star V1318 Cyg S (LkHα 225)
T. Yu. Magakian, T. A. Movsessian, H. R. Andreasyan +1
Young double star V1318 Cyg, which is associated with a small isolated star-forming region around HAeBe star BD+40o4124, has very unusual photometric and spectral behavior. We pres…