Spectroscopy and photometry of the distant radio galaxy 3C 343.1

Details Spectroscopy and photometry of the distant radio galaxy 3C 343.1 Spectroscopy and photometry of the distant radio galaxy 3C 343.1

Sep 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977apj...216l..87s&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 216, Sept. 15, 1977, p. L87-L89.

Other

11

Emission Spectra, Radio Galaxies, Spectrophotometry, Electrophotometers, Galactic Structure, Isophotes, Light (Visible Radiation), Line Spectra, Radiant Flux Density, Red Shift

Scientific paper

Spectrophotometry of the faint radio galaxy 3C 343.1 shows a strong emission line in the red. If identified with the 3727-A forbidden line of O II, it yields z = 0.750. The identification is aided by noting that the 3869-A forbidden line of Ne III is marginally visible. The optical continuum is relatively blue in color; it is likely to be caused by a population of stars younger than often found in nearby E galaxies. By comparison with other distant galaxies of established z, the isophotal diameter of about 7 arcsec measured for 3C 343.1 is consistent with the proposed redshift and corresponds to a linear size of 70 kpc and to a surface brightness of approximately 26 magnitudes/sq arcsec.

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