Ամսագրի կամ հրապարակման վերնագիր:

Բյուրականի աստղադիտարանի հաղորդումներ: Երևանի աստղադիտարանի բյուլետեն = Сообщения Бюраканской обсерватории. Бюллетень ереванской Астрономической обсерватории = Contributions from the Burakan observatory. Bulletin of the Erevan astronomical observatory

Հրապարակման ամսաթիվ:

2024

Հատոր:

71

Համար:

1

ISSN:

2579-2276

Վերնագիր:

Classification of Blazars by Activity Types

Ստեղծողը:

Abrahamyan, H. V. ; Mickaelian, A. M.

Խորագիր:

Astrometry ; Space Sciences ; Archaeoastronomy and Astronomy in Culture

Չվերահսկվող բանալի բառեր:

blazar ; quasar ; active galactic nuclei ; optical spectral classification ; activity types ; BL Lacobjects ; Flat Spectrum Radio Quasars

Ծածկույթ:

48-54

Ամփոփում:

We have carried out a spectral classification by the Activity Types for all sample of Blazars from the BZCAT v.5 Catalogue, namely the BZB, BZG, BZQ and BZU type objects. The classification is based on the Sloan Digital Sky Survey (SDSS) homogeneous medium-resolution optical spectroscopy and along with the standard BPT-type diagnostic diagrams, we have applied our newly introduced fine classification scheme with subtypes of AGN and considering many more features. Out of 3561 BZCAT objects, 1363 (38.3 %) having SDSS spectra were classified. After the new classification, 749 (54.9 %) of 1363 objects have changed their optical class.

Տեսակ:

Electronic journal

Ձևաչափ:

pdf

Նույնացուցիչ:

սեղմիր այստեղ կապին հետևելու համար

Գլխավոր նշում:

Communications of the Byurakan Astrophysical Observatory (ComBAO) is a peer-reviewed scientific journal, which publishes research in observational and theoretical astronomy/astrophysics and presents recent advances in these fields. It is being published by the NAS RA V. Ambartsumian Byurakan Astrophysical Observatory (BAO) in English in electronic form. The journal publishes original papers, review papers, brief reports, book reviews, special communications, observational and theoretical results in various fields of astronomy and related sciences, and some editorial notes, including anniversaries and obituaries. Under the heading “Legacy”, the renewed magazine will republish some old articles of high value in English. The heading “Guest articles” will bring to the attention of readers the articles of researchers who are not employees of BAO. ComBAO was founded in 1946 and regularly published in 1946-1990. However, the publication was interrupted because of the economic situation after the disintegration of the Soviet Union in 1991.

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