Optical classification of BZG objects

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 physical nature. Of the 274 BZG objects, 150 have optical spectra in the SDSS spectroscopic catalog, for which a detailed spectral classification has been carried out. A radio study showed that these objects mostly (69%) have a flat radio spectrum with a spectral index less than +/-0.5. Quasars predominate among these kinds of radio spectra. However, with increasing distance, on the average the radio spectrum becomes steeper.

Cone search capability for table J/other/Ap/66.11/table4 (List of the 150 BZG objects classified using the SDSS spectra)

Identifier
Source https://dc.g-vo.org/rr/q/lp/custom/CDS.VizieR/J/other/Ap/66.11
Related Identifier https://cdsarc.cds.unistra.fr/viz-bin/cat/J/other/Ap/66.11
Related Identifier http://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/other/Ap/66.11
Metadata Access http://dc.g-vo.org/rr/q/pmh/pubreg.xml?verb=GetRecord&metadataPrefix=oai_b2find&identifier=ivo://CDS.VizieR/J/other/Ap/66.11
Provenance
Creator Abrahamyan H.V.; Mickaelian A.M.; Paronyan G.M.; Mikayelyan G.A.,Sukiasyan A.G.
Publisher CDS
Publication Year 2024
Rights https://cds.unistra.fr/vizier-org/licences_vizier.html
OpenAccess true
Contact CDS support team <cds-question(at)unistra.fr>
Representation
Resource Type Dataset; AstroObjects
Discipline Astrophysics and Astronomy; Cosmology; Galactic and extragalactic Astronomy; High Energy Astrophysics; Natural Sciences; Observational Astronomy; Physics; Stellar Astronomy