Astronomy and Astrophysics – Astrophysics
Scientific paper
Mar 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26a...175l...1c&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 175, no. 1-2, March 1987, p. L1-L4.
Astronomy and Astrophysics
Astrophysics
31
Absorption Spectra, Bl Lacertae Objects, Emission Spectra, Quasars, Red Shift, Faint Objects, Galaxies, Interstellar Matter, Magnesium
Scientific paper
Photometric and spectroscopic data show that the absorption system observed at z = 0.3930 in the spectrum of Q1209+107 is due to an intervening H II galaxy. The remarkable similarity to the case of AO 0235+164 suggests that also the absorption system observed at z = 0.524 in the spectrum of this BL Lac object is due to an intervening H II galaxy.
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