Search Results - "Abrahamyan, H"

Classification of BLL Blazars by Optical Activity Types by Mickaelian, A. M., Abrahamyan, H. V., Paronyan, G. M., Mikayelyan, G. A., Sukiasyan, A. G., Mkrtchyan, V. K.

“…We have carried out a spectral classification by the Activity Types for a subsample of Blazars from the BZCAT v.5 Catalogue, namely the BL Lac (BLL, Lacertids)…”
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Catalog of X-Ray Active Galactic Nuclei Based on ROSAT BSC and FSC Sources by Paronyan, G. M., Mickaelian, A. M., Abrahamyan, H. V., Mikayelyan, G. A.

“…A general catalog of active galactic nuclei (AGN) has been created from identified optical sources of X-ray data from the Hamburg-ROSAT Catalog (HRC) and the…”
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Classification of Flat Spectrum Radio Quasars by Optical Activity Types by Mickaelian, A. M., Abrahamyan, H. V., Paronyan, G. M., Mikayelyan, G. A., Sukiasyan, A. G., Mkrtchyan, V. K.

“…We have carried out a spectral classification by the activity types for a subsample of blazars from the BZCAT v.5 Catalogue, namely the Flat Spectrum Radio…”
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Fine Classification of QSOs and Seyferts for Activity Types Based on SDSS Spectroscopy by Mickaelian, A. M., Abrahamyan, H. V., Paronyan, G. M., Mikayelyan, G. A.

“…Using the SDSS spectroscopy, we have carried out fine optical spectral classification for activity types for 710 AGN candidates. These objects come from a…”
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On a Possible Mechanism for the Start or Resumption of Activity of Radio Galaxies in Clusters of Galaxies by Andreasyan, R. R., Abrahamyan, H. V., Paronyan, G. M., Mikayelyan, G. A., Mickaelian, A. M.

“…We study the close proximity of the well-known and well-studied 3C31 class FRI radio galaxy in order to reveal the influence of the environment on an…”
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Optical Classification of BZG Objects from the BZCAT Blazar Catalog by Abrahamyan, H. V., Mickaelian, A. M., Paronyan, G. M., Mikayelyan, G. A., Sukiasyan, A. G.

“…In the blazar catalog BZCAT the objects are divided into 4 types: BZB, BZQ, BZG, and BZU. In this paper BZG objects are studied in order to determine their…”
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Optical variability of blazars by Abrahamyan, H. V., Mickaelian, Areg M., Paronyan, G. M., Mikayelyan, G. A.

“…The analysis of blazars' parameters from BZCAT leads to a conclusion that they do not have the same properties. The preliminary criterion to include an object…”
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Activity Types of Galaxies Selected from HRC/BHRC Sample by Paronyan, G. M., Mickaelian, A. M., Harutyunyan, G. S., Abrahamyan, H. V., Mikayelyan, G. A.

“…In this study we carry out detailed spectral classification of 173 AGN candidates from the Joint HRC/BHRC sample, which is a combination of HRC (Hamburg-ROSAT…”
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Comparative study of Rhodiola preparations on behavioral despair of rats by Panossian, A., Nikoyan, N., Ohanyan, N., Hovhannisyan, A., Abrahamyan, H., Gabrielyan, E., Wikman, G.

“…The antidepressant-like activity of an extract of the roots of Rhodiola rosea (RR) , its combination with piperine containing extract (RPE), pure substances…”
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Markarian galaxies in UV and multiwavelength studies by Mickaelian, A. M., Abrahamyan, H. V., Gyulzadyan, M. V., Paronyan, G. M., Mikayelyan, G. A.

“…The UV properties of 1152 Markarian galaxies have been investigated based on GALEX data. These objects have been investigated also in other available…”
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Activity Types of Galaxies Selected from an HRC/BHRC Sample. II by Paronyan, G. M., Mickaelian, A. M., Abrahamyan, H. V., Mikayelyan, G. A.

“…This is a detailed spectral classification of 198 candidate active galactic nuclei (AGN) from a joint HRC/BHRC sample consisting of a combination of the HRC…”
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Classification by Activity Type of a Sample of Active Galaxies with Radio Emission by Abrahamyan, H. V., Mickaelian, A. M., Paronyan, G. M., Mikayelyan, G. A.

“…This is a detailed spectral classification of 96 active galaxies from the Véron-Cetty and Véron catalog (2010, Version 13, VCV-13) of active galaxies and…”
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Radio variable sources at 1400 MHz and their optical variability by Abrahamyan, H.V., Mickaelian, A.M., Paronyan, G.M., Mikayelyan, G.A., Gyulzadyan, M.V.

“…In the present study we have cross-correlated NVSS and FIRST radio catalogues having radio flux measurements at the same 1.4 GHz frequency. This way we benefit…”
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Multiwavelength studies of Markarian galaxies by Mickaelian, A.M., Abrahamyan, H.V., Paronyan, G.M., Harutyunyan, G.S.

“…Markarian galaxies are the result of the First Byurakan Survey (FBS) conducted in 1965–1980 by B.E. Markarian et al. The sample consists of 1515 UV‐excess…”
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Investigation of Faint Galactic Carbon Stars from the First Byurakan Spectral Sky Survey. II. Early-Type Carbon Stars by Gigoyan, K. S., Sarkissian, A., Russeil, D., Mauron, N., Kostandyan, G., Vartanian, R., Abrahamyan, H. V., Paronyan, G. M.

“…In this paper, second in this series, we discuss the nature of 66 faint carbon (C) stars which have been discovered by scrutinizing the plates of the First…”
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Study of Compact Radio Galaxies in the 7C II Field by Abrahamyan, H. V., Andreasyan, R. R., Hovhannisyan, M. A., Paronyan, G. M.

“…26 radio galaxies in field II of the Cambridge 7C list which scintillate at 102 MHz are studied in detail to clarify the major physical and structural features…”
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Investigation of Faint Galactic Carbon Stars from the First Byurakan Spectral sky Survey. Optical Variability. I. N-Type AGB Carbon Stars. K-band Absolute Magnitudes and Distances by Gigoyan, K. S., Sarkissian, A., Russeil, D., Mauron, N., Kostandyan, G., Vartanian, R., Abrahamyan, H. V., Paronyan, G. M.

“…The goal of this paper is to present an optical variability study of the comparatively faint carbon (C) stars which have been discovered by searching the First…”
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Luminosities of FBS late type M stars by Abrahamyan, H V

“…A catalog of 995 C and late M type stars is compiled from the First Byurakan Survey of the sky (FBS). The question of effectively separating giants and dwarfs…”
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Dust obscuration of the narrow line region of active galactic nuclei by Sargsyan, L., Gevorgyan, M., Abrahamyan, H. V., Kostandyan, G., Paronyan, G., Samsonyan, A., Sargsyan, D., Sinamyan, P.

“…To estimate the dust absorption of the Narrow Line Region (NLR) of AGN, we have compared the infrared [NeIII] 15.55 μm line and optical [OIII] 5007 Å line…”
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Study of some morphological features of extragalactic radio sources of FRI and FRII types by Andreasyan, R. R., Hovhannisyan, M. A., Paronyan, G. M., Abrahamyan, H. V.

“…Data on more than 650 extragalactic radio sources are used to study the distributions of the spectral indices α and elongations of radio sources in the…”
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