Evidence for shock-heated gas in the Hopkins Ultraviolet Telescope spectrum of NGC 1068

Details Evidence for shock-heated gas in the Hopkins Ultraviolet Telescope spectrum of NGC 1068 Evidence for shock-heated gas in the Hopkins Ultraviolet Telescope spectrum of NGC 1068

Aug 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992apj...394l..37k&link_type=abstract

Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 394, no. 2, Aug. 1, 1992, p. L37-L41.

Astronomy and Astrophysics

Astrophysics

51

Astronomical Spectroscopy, Gas Heating, Seyfert Galaxies, Shock Heating, Ultraviolet Telescopes, Active Galactic Nuclei, Emission Spectra, H Ii Regions, Supernovae

Scientific paper

The paper presents FUV spectra of the NGC 1068 Seyfert 2 galaxy, obtained with the Hopkins Ultraviolet Telescope (HUT) during the flight of Astro-1 aboard the Space Shuttle Columbia in December 1990, revealing moderately strong C III 977-A and N III 991-A emission lines, which have never been seen before in spectra of AGNs. It is noted that the emission-line spectrum of NGC 1068 qualitatively resemble the HUT spectrum of a radiative shock in the Cygnus Loop supernova remnant (Blair et al., 1991), suggesting that shock heating may contribute significantly to the line emission.

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