Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991mnras.252..482a&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 252, Oct. 15, 1991, p. 482-504. Research supported by B
Astronomy and Astrophysics
Astronomy
86
Bl Lacertae Objects, Disk Galaxies, Elliptical Galaxies, Galactic Structure, Astronomical Models, Brightness Distribution, Red Shift, Reference Stars
Scientific paper
Twenty-three BL Lacertae objects (BL Lacs) were imaged with the William Herschel Telescope in a search for underlying host galaxies. Fourteen of these objects are resolved in this survey. The morphology of three of these galaxies are determined for the first time, and the morphology of an additional three are confirmed. All the observed underlying hosts are centered on their bright cores, and two of the newly classified hosts are disk systems. These results are in disagreement with the predictions of standard beaming and lensing models for these objects. Absolute magnitudes are calculated for observed hosts with known redshifts and they are found to be consistent with the results obtained by previous authors, despite the unexpected morphology exhibited by some of the underlying hosts.
Abraham Robert G.
Crawford Carolin S.
McHardy Ian M.
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