Roma-BZCAT: a multifrequency catalogue of blazars
Massaro, E. ; Giommi, P. ; Leto, C. ; et al.
Feb - 2009
DOI: 10.1051/0004-6361:200810161
ISSN : 0004-6361 ;
journal : Astronomy & Astrophysics

Volume : 495 ; Issue : 2
type: Article Journal

We present a new catalogue of blazars based on multi-frequency surveys and on an extensive review of the literature. Blazars are classified as BL Lacertae objects, as flat spectrum radio quasars or as blazars of uncertain/transitional type. Each object is identified by a root name, coded as BZB, BZQ and BZU for these three subclasses respectively, and by its coordinates. This catalogue is being built as a tool useful for the identification of the extragalactic sources that will be detected by present and future experiments for X and gamma-ray astronomy, like Swift, AGILE, Fermi-GLAST and Simbol-X. An electronic version is available from the ASI Science Data Center web site at

keywords : BL Lacertae objects: general - galaxies: quasars: general - catalogs