The redshift difference between the broad and narrow emission lines in OQ 208

Details The redshift difference between the broad and narrow emission lines in OQ 208 The redshift difference between the broad and narrow emission lines in OQ 208

Jun 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979mnras.187p..61o&link_type=abstract

Monthly Notices of the Royal Astronomical Society, vol. 187, June 1979, p. 61P-64P.

Astronomy and Astrophysics

Astronomy

11

Emission Spectra, H Lines, Radio Galaxies, Radio Sources (Astronomy), Red Shift, Spectral Line Width, Atomic Spectra, Forbidden Bands, Hydrogen Atoms, Radiant Flux Density, Seyfert Galaxies

Scientific paper

Optical spectra are presented for the radio source OQ208 = Markarian 668, a galaxy with a radio spectrum peaked near 7.9 GHz. Its broad H I emission lines are redshifted by +0.0094, or 2800 km/s, with respect to the narrow forbidden lines and narrow components of the H I lines. If the redshift is gravitational in origin, it corresponds to a very large mass at the center of the broad-line emitting region. The redshift of the broad lines with respect to the narrow lines in OQ 208 may be related to the asymmetry of the broad lines in many Seyfert 1 galaxies, but is larger in amount.

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