Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988esasp.281b.307r&link_type=abstract
In ESA, Proceedings of the Celebratory Symposium on a Decade of UV Astronomy with the IUE Satellite, Volume 2 p 307-310 (SEE N89
Astronomy and Astrophysics
Astronomy
3
Galactic Radiation, Iue, Late Stars, Spaceborne Astronomy, Ultraviolet Spectra, Ultraviolet Spectroscopy, Emission Spectra, Galactic Nuclei, Line Spectra, Spatial Resolution, Spectrum Analysis, Stellar Spectra, Ultraviolet Astronomy
Scientific paper
Results of IUE observations of the Liner NGC 3998 are reported. Spatial structure in the long wavelength emission is apparent; the spatial profiles from the LWP line-by-line images show a two-component structure, with an unresolved central component superimposed on extended underlying emission. The LWP emission was separated into component spectra. The unresolved component spectrum is considerably flatter than the extended component spectrum, which is dominated by fairly late type stars (late F to early G). The unresolved component also shows strong C II) 2326 A and broad Mg II 2800 A emission.The width of the Mg II emission is 8600 km/sec, and its profile agrees quite well with the broad wings of the H alpha emission. The results support the idea that NGC 3998 may contain a dwarf Seyfert nucleus.
Filippenko Alexei V.
Reichert Gail A.
Wu Congjun
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