ESO 113-IG45 - Galaxy and/or quasar

Details ESO 113-IG45 - Galaxy and/or quasar ESO 113-IG45 - Galaxy and/or quasar

Jan 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978a%26a....62l..13w&link_type=abstract

Astronomy and Astrophysics, vol. 62, no. 1-2, Jan. 1978, p. L13-L16.

Astronomy and Astrophysics

Astrophysics

23

Galactic Nuclei, Quasars, Seyfert Galaxies, Spiral Galaxies, X Ray Sources, Astronomical Photography, Radial Velocity, Spectroscopy, Stellar Envelopes, Ubv Spectra

Scientific paper

Spectroscopy, UBV photometry and photography have been obtained of the extraordinary 13th magnitude object ESO 113-IG45 identified as a Seyfert galaxy by Fairall (1977). The object is outstanding because of its high intrinsic luminosity and bright apparent magnitude, the quasar-like nucleus, and the extensive envelope with a well-defined structure. The object is classified here as a quasar (starlike nucleus, intrinsic luminosity, colors) as well as a Seyfert 1 (spiral) galaxy (structured envelope, linear size), while the L(nucleus)/L (galaxy) ratio is unusually high for a galaxy. The object is the intrinsically most luminous Seyfert nucleus yet known, and may be described as a quasar in the center of a (spiral) galaxy.

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