A new intermediate Seyfert galaxy - X-ray, optical, and radio properties

Details A new intermediate Seyfert galaxy - X-ray, optical, and radio properties A new intermediate Seyfert galaxy - X-ray, optical, and radio properties

Nov 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982aj.....87.1438g&link_type=abstract

Astronomical Journal, vol. 87, Nov. 1982, p. 1438-1442.

Astronomy and Astrophysics

Astronomy

6

Astronomical Spectroscopy, Radio Sources (Astronomy), Seyfert Galaxies, Visible Spectrum, X Ray Sources, Electron Emission, Emission Spectra, H Beta Line, Radiant Flux Density, Radio Spectra, Red Shift, Relativistic Particles, Sky Surveys (Astronomy), Spectral Line Width, Spectral Resolution

Scientific paper

It is shown that the X-ray source X0459 + 034 is a Seyfert galaxy of intermediate type, and optical spectroscopy and radio observations were performed to study the nature of the object. The object appears almost stellar and slightly diffuse on Palomar Sky Survey prints. The source is identified as a Type 1.5 Seyfert with broad and narrow line components of redshift 0.016 + or - 0.001, according to H-Beta line profile. In addition, the broad line component H-Beta equivalent width is larger than that of the narrow line component by a factor of three. Finally, it is shown that this is a weak radio source with a steep nonthermal spectrum and an angular extent of approximately 3 in., and the composite radio-to-X-ray spectrum suggests that in different spectral regions, different relativistic electron populations or emission mechanisms are contributing factors.

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