Mon. Not. R. Astron. Soc.
277, 1477-1490 (1995)

A Sample-Oriented Catalogue of BL Lacertae Objects

Paolo Padovani1 and Paolo Giommi2

1 Dipartimento di Fisica, II Università di Roma `Tor Vergata', Via della Ricerca Scientifica 1, I-00133 Roma, Italy
2 ESIS, Information Systems Division of ESA, ESRIN, Via G. Galilei, I-00044 Frascati, Italy

ABSTRACT. We present a catalogue of 233 BL Lacertae objects compiled through an extensive bibliographic search updated to mid-1995. A large fraction of the sources listed in the catalogue belongs to well-defined samples and can be used for statistical purposes. A smaller fraction consists of miscellaneous (but confirmed) BL Lacs and of objects classified as BL Lac candidates. We discuss the selection criteria of the different samples, report the discovery of two previously unnoticed BL Lacs in the Palomar-Green survey, and comment on the possible association of some of the still unidentified high galactic latitude gamma-ray (EGRET) sources with BL Lacs. Some statistical properties of the catalogue are also briefly discussed.

Key words: catalogues - galaxies: active - BL Lacertae objects: general - radio continuum: galaxies - X-rays: galaxies.

Table of Contents


ball4 THE CATALOGUE - Table 1

ball4 Radio surveys and catalogues

ball4 The 1-Jy sample
ball4 The S4 sample
ball4 The S5 sample

ball4 Optical surveys and catalogues

ball4 The Palomar-Green sample
ball4 The optical variability sample
ball4 The optical polarization survey

ball4 X-ray surveys and catalogues

ball4 The EMSS sample
ball4 The EXOSAT sample
ball4 The HEAO-1 sample
ball4 The Slew survey sample
ball4 The RASS sample
ball4 The WGA and ROSATSRC catalogues

ball4 Gamma-ray catalogues

ball4 Miscellaneous objects

ball4 Uncertain and candidate BL Lac