The redshifts of the BL Lac objects 1749+096 and 2254+074

Details The redshifts of the BL Lac objects 1749+096 and 2254+074 The redshifts of the BL Lac objects 1749+096 and 2254+074

Feb 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988a%26a...191l..16s&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 191, no. 2, Feb. 1988, p. L16-L18.

Astronomy and Astrophysics

Astrophysics

29

Active Galactic Nuclei, Bl Lacertae Objects, Red Shift, Emission Spectra, Line Spectra, Very Large Array (Vla)

Scientific paper

We present spectroscopic observations for the two BL Lac objects 1749+096 and 2254+074 with previously unknown redshifts. Spectra of 1749+096 taken during a faint state yield an emission line redshift of Zem = 0.32. For 2254+074, we find equal redshifts for emission and absorption lines of z = 0.19. Direct imaging data show that 2254+074 is extended; the radial brightness profile, however, can not be well fitted by either elliptical or spiral galaxy brightness distributions. 1749+096 is only marginally resolved.

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