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A CCD Survey of BL Lac Objects
[chapter]
1986
Quasars
Preserved Fulltext
A long term project was started at the Max-Planck-Institut fur Astronomie, Heidelberg, to study a complete sample of 46 northern and southern BL Lac objects with flux densities exceeding 1 Jy at 5 GHz using optical spectroscopy, optical polarimetry, and direct deep CCD imaging.
doi:10.1007/978-94-009-4716-0_30
fatcat:yek2j5egwjfi7bbgxtpgfyrhqq