Optical absorption lines in the high redshift BL Lac object 0215 + 015

Details Optical absorption lines in the high redshift BL Lac object 0215 + 015 Optical absorption lines in the high redshift BL Lac object 0215 + 015

Sep 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982mnras.200.1091b&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 200, Sept. 1982, p. 1091-1111. Research supported by the Australian Res

Astronomy and Astrophysics

Astronomy

36

Absorption Spectra, Astronomical Spectroscopy, Bl Lacertae Objects, Red Shift, Abundance, Carbon, Continuous Spectra, Fine Structure, Galactic Evolution, Halos, Ion Density (Concentration), Molecular Clouds, Radio Spectra

Scientific paper

Results are presented of a study of 0215+015 (PKS 0215+015), the highest redshift and most luminous BL Lac object so far detected. Optical continuum measurements reveal that the object had brightened to 15.2 mag on September 10, 1980, thus confirming an overall variability range of more than 4 mag. It is noted that variations on a time-scale less than or equal to two months may be present. A review of the published radio data suggests that 0215+015 has a core-halo or multicomponent structure, similar to that found for the BL Lac 0735+178. Possible origins of the absorption systems are considered.

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