The appearance of broad emission lines in the spectrum of the BL Lac object PKS 0521-36

Details The appearance of broad emission lines in the spectrum of the BL Lac object PKS 0521-36 The appearance of broad emission lines in the spectrum of the BL Lac object PKS 0521-36

Nov 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981a%26a...103l...1u&link_type=abstract

Astronomy and Astrophysics, vol. 103, no. 1, Nov. 1981, p. L1, L2.

Astronomy and Astrophysics

Astrophysics

46

Bl Lacertae Objects, Elliptical Galaxies, Emission Spectra, H Alpha Line, Optical Emission Spectroscopy, Radio Galaxies, H Beta Line, Polarized Light, Spectrum Analysis

Scientific paper

Observations are reported which show that intense broad permitted lines have appeared in the spectrum of PKS 0521-36, a radio galaxy which in the past could be classified as a BL Lac object on the basis of its variable and polarized optical continuum and its weak narrow emission line spectrum. The full width at zero intensity of H-alpha emission lines is about 120 A.

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