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Above undated message substituted from Template:Dashboard.wikiedu.org assignment by PrimeBOT ( talk) 15:08, 16 January 2022 (UTC) reply

This article was automatically assessed because at least one WikiProject had rated the article as stub, and the rating on other projects was brought up to Stub class. BetacommandBot 09:44, 10 November 2007 (UTC) reply

The article's first sentence currently identifies the term as only referring to the entire galaxies themselves, despite the fact that from early suggestions that they were evidence of AGNs (e.g. Bergeron, J. (1978) "Quasars and BL Lac Objects as Active Nuclei of Giant Galaxies" The Messenger, vol. 12, p. 5-6. ESO.), to more recent publications, e.g.

• Urry, C. Megan (1999) "BL Lac Objects and Blazars: Past, Present and Future", BL Lac Phenomenon conference held 22-26 June, 1998 in Turku, Finland, p. 3. -- available via arXiv preprint or Harvard non-OCRed scan
• Sbarufatti1, B.; Treves1, A.; Falomo R. (2005) "Imaging Redshifts of BL Lacertae Objects". The Astrophysical Journal, Volume 635, Number 1. The American Astronomical Society
• Falomo, R. (1991) "On the galaxy surrounding the BL Lac object H2356 - 309". Astronomical Journal (ISSN 0004-6256), vol. 101, March 1991, p. 821-824

it looks like researchers often use it to mean the nuclei themselves. On the other hand, there are examples in the other direction like this. I will edit the intro's first sentence to reflect this. — Undomelin ( talk) 21:55, 5 September 2018 (UTC) reply