Markarian galaxies in UV and multiwavelength studies

Mickaelian, A. M.; Abrahamyan, H. V.; Gyulzadyan, M. V.; Paronyan, G. M.; Mikayelyan, G. A.

doi:10.1007/s10509-018-3439-2

Cited by 5 publications

(7 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…• The UV properties of 1152 Markarian galaxies were investigated based on GALEX data (Mickaelian et al 2018a). Using our classification for activity types for 779 Markarian galaxies based on SDSS spectroscopy, we have investigated these objects on the GALEX, 2MASS and WISE color-magnitude and color-color diagrams by the location of objects of different activity types and have revealed a number of concentrations.…”

Section: Discussionmentioning

confidence: 99%

“…Three of these objects are ULIRGs. The observations and study of 257 Byurakan-IRAS Galaxies were summarized in Mikayelyan et al (2019a).…”

Section: Discussionmentioning

confidence: 99%

“…Markarian galaxies in UV and multiwavelength studies (Mickaelian et al 2018a) The UV properties of 1152 Markarian galaxies have been investigated based on GALEX data. These objects have been investigated also in other available wavelengths using multi-wavelength data from X-ray to radio.…”

Section: Introductionmentioning

confidence: 99%

“…We give in Figure 4 the dependence of L ir and L f ir vs. redshift. Observations and study of Byurakan-IRAS Galaxies were summarized (Mikayelyan et al 2019a) A general analysis of optical spectroscopic data on 257 Byurakan-IRAS Galaxies (BIG objects) obtained with the BAO 2.6m, SAO 6m, OHP 1.93m telescopes and taken from SDSS spectroscopic database was carried out. 149 star-formation regions (SB) galaxies, 42 galaxies with active nuclei (AGN), and 28 galaxies with a composite spectrum were identified.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Studies of Active Galaxies in Byurakan: Recent Results

Mickaelian

Abrahamyan

Paronyan

et al. 2019

ComBAO

Self Cite

View full text Add to dashboard Cite

We present the recent results of studies on active galaxies (both AGN and Starbursts) by the Extragalactic group of Byurakan Astrophysical Observatory (BAO) Research Department “Astronomical Surveys”. The research has been carried out in 2017-2019 and the results are published in 2018-2019. These studies are characterized by multiwavelength approach to statistical analysis of large amount of data obtained in different wavelengths; from X-ray to radio. Results on HRC/BHRC sample objects (optical identifications of ROSAT X-ray sources), studies of Markarian galaxies in UV and multiwavelength SEDs, abundance and star formation determinations in Mrk galaxies from SDSS spectra, revised optical classification of “LINERs”, study and classification of SDSS spectra for Byurakan-IRAS Galaxies, summary of observations and study of Byurakan-IRAS Galaxies (BIG objects), discovery of new bright ULIRGs from the IRAS PSC/FSC Combined Catalogue and their spectral classification, radio variable sources at 1400 MHz and their optical variability, classification of BZCAT objects having uncertain types (BZU objects), and optical variability of blazars are presented.

show abstract

Section: Discussionmentioning

confidence: 99%

“…Three of these objects are ULIRGs. The observations and study of 257 Byurakan-IRAS Galaxies were summarized in Mikayelyan et al (2019a).…”

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Studies of Active Galaxies in Byurakan: Recent Results

Mickaelian

Abrahamyan

Paronyan

et al. 2019

ComBAO

Self Cite

View full text Add to dashboard Cite

show abstract

“…Markarian galaxies in UV and multiwavelength studies (Mickaelian et al, 2018b). The UV properties of 1152 Markarian galaxies have been investigated based on GALEX data.…”

Section: Byurakan Surveys For Active Galaxiesmentioning

confidence: 99%

Surveys for active galaxies: discovery and studies

Mickaelian

Abrahamyan

Paronyan

et al. 2020

ComBAO

Self Cite

View full text Add to dashboard Cite

We present surveys and related studies of active galaxies carried out at the Byurakan Astrophysical Observatory (BAO). This was one of the main research subjects at BAO during many years, since mid-1950s, when Viktor Ambartsumian suggested the hypothesis of the activity of the galactic nuclei. A number of surveys and searches for Active Galactic Nuclei (AGN) and other active galaxies were accomplished during 1960s-1980s. Since mid-1990s, our research group carried out new surveys and studies of active galaxies based on the First Byurakan Survey (FBS or Markarian Survey) and then a number of others. Here we also present the recent results of studies on active galaxies (both AGN and Starbursts) by the Extragalactic group of the Byurakan Astrophysical Observatory (BAO) Research Department “Astronomical Surveys”. These studies are characterized by multiwavelength approach to statistical analysis of large amount of data obtained in different wavelengths; from X-ray to radio. A fine classification scheme for active galaxies has also been suggested.

show abstract

Homogeneous fine classification of Markarian galaxies based on SDSS medium-resolution spectroscopy

Mickaelian,

Abrahamyan,

Mikayelyan

et al. 2024

A&A

Self Cite

View full text Add to dashboard Cite

Context: Markarian (Mrk) galaxies, revealed due to their ultraviolet excess are very famous; they play a significant role in many astrophysical problems and come in a variety of types: Seyferts (Sys), low-ionization narrow emission-line regions (LINERs), starbursts (SBs), blue compact dwarf galaxies (BCDGs), as well as some quasars (QSOs) and blazars. They also appear as sources of non-optical radiation, such as gamma-ray, X-ray, ultraviolet (UV), infrared (IR), and radio, including some extremely high-energy gamma-ray sources (Mrk 421, Mrk 501) and very high-luminosity IR galaxies (Mrk 231). Aims: The classifications of Mrk galaxies for activity types have been carried out based on old mostly poor-quality and inhomogeneous spectra (relatively low-resolution photographic spectra and low S/N spectra). The Sloan Digital Sky Surveys (SDSS) provides sim 90$<!PCT!>$ of the existing medium-resolution spectra, and is a relevant homogeneous database for classification of galaxies. Our aim was to obtain homogeneous classifications of Mrk galaxies by means of the SDSS spectra. Methods: Based on our work on the classification of newly revealed objects from various recent catalogs, we developed a fine classification scheme for activity types based on the homogeneous database of the SDSS spectroscopy. This scheme was applied to Mrk galaxies having spectra in the SDSS (779 out of 1544, 50.45$<!PCT!>$). Results: As a result, 779 Mrk galaxies now have homogeneous optical spectral classification that can be used for further studies and statistics of their physical and spatial properties. We revealed 2 QSOs, 49 classical Seyferts (broad-line Seyferts 1, BLS1s), 17 narrow-line Seyferts 1 (NLS1s), 4 Sy2s, 12 LINERs, 11 active galactic nuclei (AGN) without a definite type, 31 Composite spectrum objects, and 533 HII/Starbursts. Due to low-quality spectra, some objects were left without definite activity types and were classified as emission or absorption galaxies.

show abstract

Markarian galaxies in UV and multiwavelength studies

Cited by 5 publications

References 20 publications

Studies of Active Galaxies in Byurakan: Recent Results

Studies of Active Galaxies in Byurakan: Recent Results

Surveys for active galaxies: discovery and studies

Homogeneous fine classification of Markarian galaxies based on SDSS medium-resolution spectroscopy

Contact Info

Product

Resources

About