Astronomy and Astrophysics – Astronomy
Scientific paper
May 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980apj...237l..65b&link_type=abstract
Astrophysical Journal, Part 2 - Letters to the Editor, vol. 237, May 1, 1980, p. L65-L69.
Astronomy and Astrophysics
Astronomy
65
Astronomical Photometry, Elliptical Galaxies, Iue, Luminous Intensity, Ultraviolet Astronomy, Ultraviolet Spectra, Absorption Spectra, Carbon, Emission Spectra, Forbidden Transitions, Galactic Nuclei, Light Scattering, Oxygen Spectra, Radio Galaxies
Scientific paper
A spectrum of M87 obtained in the 1150-2000 A spectral range by the IUE is discussed. The visual and UV energy distribution of the nucleus of M87 reveals an essentially continuous curve from 1300 to 10,500 A, and a turnup in flux below 2200 A. It is shown that this turnup is not a consequence of scattered light in the instrument, while a plot of the deconvolved M87 UV profile and the visual profile shows that the radiation in the 1300-2200 A spectral region is distributed in the same way as the visual radiation; it is not a point source. In addition, there is evidence in the UV for an emission line of C IV; the relative strengths of C IV, H beta, and the forbidden O III lines at 4959 and 5007 A are consistent with those seen in planetary nebulae, but the forbidden O II line at 3727 A is much too strong.
Bertola Francesco
Capaccioli Massimo
Holm Albert V.
Oke Bev J.
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