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Table 1.
Acronyms and abbreviations used in the text.
| Acronym or abbreviation | Description |
|---|---|
| AGN | Active Galactic Nuclei |
| AGU | AGN of Uncertain type |
| BCU | Blazar of Uncertain type |
| BLL | BL Lac object |
| FSRQ | Flat Spectrum Radio Quasar |
| UGS | Unidentified/Unassociated γ-ray Source |
| BZB | Roma-BZCAT label for BL Lacs |
| BZQ | Roma-BZCAT label for Flat Spectrum Radio Quasars |
| BZG | Roma-BZCAT label for blazars with optical spectra dominated by their host galaxy |
| 1FGL | Fermi-LAT First Source Catalog |
| 2FGL | Fermi-LAT Second Source Catalog |
| 3FGL | Fermi-LAT Third Source Catalog |
| 4FGL | Fermi-LAT Fourth Source Catalog |
| FL8Y | Preliminary Fermi-LAT 8-year Point Source List |
| Roma-BZCAT | Roma-BZCAT multifrequency catalogue of Blazars |
| KDEBLLACS | Catalog of KDE-selected candidate BL Lacs; Kernel Density Estimation (KDE) |
| WIBRaLS | WISE Blazar-like Radio-Loud Sources |
| Blanco | Victor Blanco 4 m Telescope |
| Copernico | Copernico 182 cm Telescope |
| DSS | Digital Sky Survey |
| Fermi-LAT | Fermi Large Area Telescope |
| HET | Hobby-Eberly Telescope |
| Keck | W. M. Keck Observatory |
| KPNO | Kitt Peak National Observatory |
| GemN | Gemini North Observatory |
| Magellan | Magellan Telescope |
| MMT | MMT Observatory at Mount Hopkins |
| NOT | Nordic Optical Telescope |
| NTT | New Technology Telescope |
| OAGH | Guillermo Haro Astrophysical Observatory |
| OAN-SPM | Observatorio Astronomico Nacional San Pedro Mártir |
| Palomar | Hale 200 inch Telescope at Palomar |
| SALT | Southern African Large Telescope |
| SDSS | Sloan Digital Sky Survey |
| SOAR | Southern Astrophysical Research Telescope |
| TNG | Telescopio Nazionale Galileo |
| WISE | Wide-field Infrared Survey Explorer |
| 6dF | The Six-degree Field Galaxy Survey |
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