The 5th edition of the Roma-BZCAT. A short presentation


The 5th edition of the Roma-BZCAT Multifrequency Catalogue of Blazars is available in a printed version and online at the ASDC website (; it is also in the NED database. It presents several relevant changes with respect to the past editions which are briefly described in this paper.

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This work started when one of the authors (E.M.) was at the Università di Roma La Sapienza. We made large use of the Sloan Digital Sky Survey (SDSS), the NED database and other astronomical catalogues distributed in digital form (Vizier and Simbad) at Centre de Dates astronomiques de Strasbourg (CDS) at the Louis Pasteur University. This work has made use of the Palermo BAT Catalogue and database operated at INAF-IASF Palermo. Spectra from the Final Release of 6dFGS have been used in our blazar diagnostics.

The use of the online version of the Roma-BZCAT and the scientific tools developed at the ASI Science Data Center (with the supervision of Paolo Giommi) were fundamental for the catalogue revision. We are therefore grateful to the ASDC technical staff for the excellent work carried out to support the on-line version of the Roma-BZCAT.

P.M. acknowledges support from the DST/NRF SKA post-graduate bursary initiative. This work has been partially supported by research funds of Università di Roma La Sapienza and by the ASI grant to INAF to support the scientific activities of the ASDC.

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Correspondence to A. Maselli.

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Massaro, E., Maselli, A., Leto, C. et al. The 5th edition of the Roma-BZCAT. A short presentation. Astrophys Space Sci 357, 75 (2015).

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  • Extragalactic astronomy
  • Active galactic nuclei