Optical spectra of BL Lac objects

This website reports a database of optical spectra of ~ 300 BL Lac objects collected from various literature sources. The targets are listed in an active table yielding this basic information: Name of object with the link to NED, Coordinates (RA, DEC), Redshift or lower limit (when available), and the reference to published papers with the spectra.
For each object a figure and an ascii table of the calibrated spectrum are provided (see example below).

BL Lac spectrum

If you want to contribute to the BL Lac spectral database ZBLLAC please read the instructions or contact us.

INAF Osservatorio Astronomico di Padova Universit? degli Studi dell'Insubria

Last update on May 8th, 2020