Electronographic photometry of Ton 1542

Details Electronographic photometry of Ton 1542 Electronographic photometry of Ton 1542

Apr 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977a%26a....56...71v&link_type=abstract

Astronomy and Astrophysics, vol. 56, no. 1-2, Apr. 1977, p. 71-74. In French.

Astronomy and Astrophysics

Astrophysics

8

Astronomical Photometry, Electronography, Quasars, Seyfert Galaxies, Astronomical Catalogs, Galactic Nuclei, Isophotes, Luminous Intensity, Red Shift, Spiral Galaxies

Scientific paper

Electronographic photometry is used to resolve images of the object Ton 1542 (redshift of 0.064) into two components. These constitute a bright quasi-stellar nucleus with an absolute magnitude of -22.2, a B-V color index of 0.27, and a U-B index of -1.02, as well as an underlying galaxy considered to be an ScI spiral with an absolute magnitude of -21.8, a B-V index of 0.44, and a U-B index of -0.15. It is concluded that Ton 1542 is an example of a Seyfert galaxy with a very bright nucleus and supports the idea of a continuous sequence from 'classical' Seyferts to quasars.

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