0309 + 411, an Mpc-sized core-dominated radio galaxy/quasar

Details 0309 + 411, an Mpc-sized core-dominated radio galaxy/quasar 0309 + 411, an Mpc-sized core-dominated radio galaxy/quasar

Dec 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989a%26a...226l..13d&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 226, no. 1, Dec. 1989, p. L13-L16.

Astronomy and Astrophysics

Astronomy

13

Extragalactic Radio Sources, Galactic Clusters, Quasars, Radio Galaxies, Astronomical Spectroscopy, Radio Astronomy

Scientific paper

A visible spectrum of the 0309 + 411 radio source located on the periphery of the Perseus cluster was obtained with the Faint Object Spectrograph attached to the William Herschel Telescope at the Roque de los Muchachos Observatory on La Palma. The galaxy is found to possess hitherto unknown very large scale radio emissions and a quasarlike optical spectrum. Its angular extent of 9.5 arcmin translates to a linear size of 1.8 Mpc, the largest projected size known to date for a quasar. The properties of 0.309 + 411 are discussed within the framework of the 'unified scheme' of compact and extended extragalactic radio sources.

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