Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991aj....102.1991f&link_type=abstract
Astronomical Journal (ISSN 0004-6256), vol. 102, Dec. 1991, p. 1991-1993.
Astronomy and Astrophysics
Astronomy
25
Bl Lacertae Objects, Red Shift, Star Distribution, Absorption Spectra, Emission Spectra, Line Spectra, Optical Emission Spectroscopy
Scientific paper
Optical spectroscopy of three BL Lacertae objects which makes it possible to derive the previously unknown redshift of the objects is presented. For PKS 0118 - 27 an absorption doublet of Mg II at z = 0.559 is found. For PKS 0829 + 04 spectral signature of stellar population is detected at z = 0.18. Spectra of MC 1057 + 10 show broad emission lines which, identified with Mg II 2800 and semiforbidden C II 1909, yield z = 1.317.
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