MCG 8-11-11 - A Seyfert galaxy in an X-ray source error box

Details MCG 8-11-11 - A Seyfert galaxy in an X-ray source error box MCG 8-11-11 - A Seyfert galaxy in an X-ray source error box

Jul 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977a%26a....59l..19w&link_type=abstract

Astronomy and Astrophysics, vol. 59, no. 2, July 1977, p. L19-L21. Research supported by the Science Research Council.

Astronomy and Astrophysics

Astronomy

32

Galactic Nuclei, Galactic Radiation, Seyfert Galaxies, Spectral Line Width, X Ray Sources, Astronomical Spectroscopy, H Lines, Light Emission, Position (Location), Radio Sources (Astronomy), Spectral Energy Distribution

Scientific paper

Optical spectra of the nucleus of the galaxy MCG 8-11-11, which lies inside the error box of the X-ray source 2A0551+466, have been obtained. The galaxy is a type 1 Seyfert, with hydrogen line widths of the order of 8000 km/s (full-width zero intensity). The identification of 2A0551+466 with MCG 8-11-11 is supported by variability of the X-ray flux density on a time scale of less than a month and also by the presence of a compact radio source coincident with the optical nucleus. If this identification is correct, MCG 8-11-11 is the first Seyfert galaxy to be discovered by means of its X-ray emission.

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